id stringlengths 8 8 | original_sql stringlengths 206 666 | optimized_sql stringlengths 206 666 | speedup_ratio float64 0.16 57.7 | bottleneck_diagnosis stringclasses 7
values | optimization_reasoning stringlengths 171 173 | faster_engine stringclasses 2
values | messages listlengths 3 3 |
|---|---|---|---|---|---|---|---|
qp_00000 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 12.94 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 12.94x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00001 | SELECT ps_partkey, SUM(ps_supplycost * ps_availqty) AS value
FROM partsupp
JOIN supplier ON ps_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'EGYPT'
GROUP BY ps_partkey
HAVING SUM(ps_supplycost * ps_availqty) > 287316
ORDER BY value D... | SELECT ps_partkey, SUM(ps_supplycost * ps_availqty) AS value
FROM partsupp
JOIN supplier ON ps_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'EGYPT'
GROUP BY ps_partkey
HAVING SUM(ps_supplycost * ps_availqty) > 287316
ORDER BY value D... | 6.44 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.44x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00002 | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | 4.17 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 4.17x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00003 | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | 8.35 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 8.35x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00004 | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#31'
AND l_quantity >= 7
AND l_quantity <= 24
AND p_size BETWEEN 3 AND 21; | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#31'
AND l_quantity >= 7
AND l_quantity <= 24
AND p_size BETWEEN 3 AND 21; | 1.88 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 1.88x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00005 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 10.91 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 10.91x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00006 | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | 50.13 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 50.13x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00007 | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#15'
AND p_container = 'LG CASE'
AND l_quantity < 19; | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#15'
AND p_container = 'LG CASE'
AND l_quantity < 19; | 0.65 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.65x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00008 | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1993-03-11'
AND l_shipdate < '1993-06-11'
GROUP BY ... | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1993-03-11'
AND l_shipdate < '1993-06-11'
GROUP BY ... | 6.64 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.64x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00009 | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#31'
AND l_quantity >= 10
AND l_quantity <= 35
AND p_size BETWEEN 4 AND 39; | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#31'
AND l_quantity >= 10
AND l_quantity <= 35
AND p_size BETWEEN 4 AND 39; | 3.07 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 3.07x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00010 | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | 8.14 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 8.14x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00011 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 11.92 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 11.92x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00012 | SELECT substr(c_phone, 1, 2) AS cntrycode,
COUNT(*) AS numcust,
SUM(c_acctbal) AS totacctbal
FROM customer
WHERE substr(c_phone, 1, 2) IN ('28', '13', '18')
AND c_acctbal > 525.68
GROUP BY cntrycode
ORDER BY cntrycode; | SELECT substr(c_phone, 1, 2) AS cntrycode,
COUNT(*) AS numcust,
SUM(c_acctbal) AS totacctbal
FROM customer
WHERE substr(c_phone, 1, 2) IN ('28', '13', '18')
AND c_acctbal > 525.68
GROUP BY cntrycode
ORDER BY cntrycode; | 2.98 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.98x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00013 | SELECT p_brand, p_type, p_size, COUNT(DISTINCT ps_suppkey) AS supplier_cnt
FROM partsupp
JOIN part ON p_partkey = ps_partkey
WHERE p_brand <> 'Brand#12'
AND p_type NOT LIKE 'STANDARD%'
AND p_size IN (2, 29, 38, 16, 13, 19, 37, 26)
GROUP BY p_brand, p_type, p_size
... | SELECT p_brand, p_type, p_size, COUNT(DISTINCT ps_suppkey) AS supplier_cnt
FROM partsupp
JOIN part ON p_partkey = ps_partkey
WHERE p_brand <> 'Brand#12'
AND p_type NOT LIKE 'STANDARD%'
AND p_size IN (2, 29, 38, 16, 13, 19, 37, 26)
GROUP BY p_brand, p_type, p_size
... | 3.18 | DISTINCT operation incurs sorting and hashing memory allocation. Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 3.18x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00014 | SELECT c_count, COUNT(*) AS custdist
FROM (
SELECT c_custkey, COUNT(o_orderkey) AS c_count
FROM customer
LEFT JOIN orders ON c_custkey = o_custkey
AND o_comment NOT LIKE '%special%requests%'
GROUP BY c_custkey
) AS c_orders
GROUP BY... | SELECT c_count, COUNT(*) AS custdist
FROM (
SELECT c_custkey, COUNT(o_orderkey) AS c_count
FROM customer
LEFT JOIN orders ON c_custkey = o_custkey
AND o_comment NOT LIKE '%special%requests%'
GROUP BY c_custkey
) AS c_orders
GROUP BY... | 7.28 | Nested subqueries present, creating potential correlated loop overhead. Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 7.28x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00015 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 11.83 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 11.83x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00016 | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1996-08-08'
AND l_shipdate < '1996-11-08'
GROUP BY ... | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1996-08-08'
AND l_shipdate < '1996-11-08'
GROUP BY ... | 5.78 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 5.78x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00017 | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1996-04-12'
AND l_shipdate < '1997-04-12'
AND l_discount BETWEEN 0.05 AND 0.07
AND l_quantity < 25; | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1996-04-12'
AND l_shipdate < '1997-04-12'
AND l_discount BETWEEN 0.05 AND 0.07
AND l_quantity < 25; | 17.57 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 17.57x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00018 | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | 6.89 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.89x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00019 | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'RUSSIA'
AND l1.l_receiptdate > l1.l_commitd... | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'RUSSIA'
AND l1.l_receiptdate > l1.l_commitd... | 14.17 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 14.17x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00020 | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1997-12-15'
AND l_shipdate < '1998-03-15'
GROUP BY ... | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1997-12-15'
AND l_shipdate < '1998-03-15'
GROUP BY ... | 7.95 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 7.95x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00021 | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | 44.56 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 44.56x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00022 | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#44'
AND p_container = 'SM BOX'
AND l_quantity < 38; | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#44'
AND p_container = 'SM BOX'
AND l_quantity < 38; | 0.55 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.55x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00023 | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#22'
AND p_container = 'WRAP PKG'
AND l_quantity < 37; | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#22'
AND p_container = 'WRAP PKG'
AND l_quantity < 37; | 0.6 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.6x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00024 | SELECT s_name, s_address
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'VIETNAM'
AND s_suppkey IN (
SELECT ps_suppkey
FROM partsupp
WHERE ps_availqty > 464
AND ps_partkey IN (
SELECT p... | SELECT s_name, s_address
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'VIETNAM'
AND s_suppkey IN (
SELECT ps_suppkey
FROM partsupp
WHERE ps_availqty > 464
AND ps_partkey IN (
SELECT p... | 1.12 | Nested subqueries present, creating potential correlated loop overhead. Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 1.12x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00025 | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | 10.35 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 10.35x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00026 | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-01-05'
AND o_orderdate < '1993-04-05'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-01-05'
AND o_orderdate < '1993-04-05'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | 2.33 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.33x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00027 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 10.92 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 10.92x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00028 | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'GERMANY'
AND l1.l_receiptdate > l1.l_commit... | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'GERMANY'
AND l1.l_receiptdate > l1.l_commit... | 16.59 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 16.59x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00029 | SELECT s_name, s_address, s_phone, s_acctbal, n_name
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE s_acctbal > 5284.34
ORDER BY s_acctbal DESC
LIMIT 20; | SELECT s_name, s_address, s_phone, s_acctbal, n_name
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE s_acctbal > 5284.34
ORDER BY s_acctbal DESC
LIMIT 20; | 0.33 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.33x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00030 | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1996-03-22'
AND l_shipdate < '1997-03-22'
AND l_discount BETWEEN 0.05 AND 0.07
AND l_quantity < 25; | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1996-03-22'
AND l_shipdate < '1997-03-22'
AND l_discount BETWEEN 0.05 AND 0.07
AND l_quantity < 25; | 18.23 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 18.23x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00031 | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | 6.57 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.57x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00032 | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#32'
AND l_quantity >= 6
AND l_quantity <= 25
AND p_size BETWEEN 1 AND 35; | SELECT SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#32'
AND l_quantity >= 6
AND l_quantity <= 25
AND p_size BETWEEN 1 AND 35; | 2.91 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.91x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00033 | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'CANADA' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'CANADA' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | 20.74 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 20.74x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00034 | SELECT s_name, s_address, s_phone, s_acctbal, n_name
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE s_acctbal > 7286.72
ORDER BY s_acctbal DESC
LIMIT 20; | SELECT s_name, s_address, s_phone, s_acctbal, n_name
FROM supplier
JOIN nation ON s_nationkey = n_nationkey
WHERE s_acctbal > 7286.72
ORDER BY s_acctbal DESC
LIMIT 20; | 0.34 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.34x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00035 | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | 50.65 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 50.65x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00036 | SELECT c_custkey, c_name,
SUM(l_extendedprice * (1 - l_discount)) AS revenue,
c_acctbal, n_name, c_address, c_phone
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN nation ON c_nationkey = n_nationkey
W... | SELECT c_custkey, c_name,
SUM(l_extendedprice * (1 - l_discount)) AS revenue,
c_acctbal, n_name, c_address, c_phone
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN nation ON c_nationkey = n_nationkey
W... | 1.87 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 1.87x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00037 | SELECT substr(c_phone, 1, 2) AS cntrycode,
COUNT(*) AS numcust,
SUM(c_acctbal) AS totacctbal
FROM customer
WHERE substr(c_phone, 1, 2) IN ('10', '15', '13', '31', '29')
AND c_acctbal > 3482.28
GROUP BY cntrycode
ORDER BY cntrycode; | SELECT substr(c_phone, 1, 2) AS cntrycode,
COUNT(*) AS numcust,
SUM(c_acctbal) AS totacctbal
FROM customer
WHERE substr(c_phone, 1, 2) IN ('10', '15', '13', '31', '29')
AND c_acctbal > 3482.28
GROUP BY cntrycode
ORDER BY cntrycode; | 2.26 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.26x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00038 | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | 2.79 | Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.79x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00039 | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#33'
AND p_container = 'LG PKG'
AND l_quantity < 29; | SELECT SUM(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHERE p_brand = 'Brand#33'
AND p_container = 'LG PKG'
AND l_quantity < 29; | 0.62 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 0.62x when evaluated on column-store execution. | sqlite | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00040 | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | 8.14 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 8.14x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00041 | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | SELECT n_name, SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
JOIN supplier ON l_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
JOIN region ON n_regionkey = r_reg... | 11.49 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 11.49x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00042 | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'CANADA' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'CANADA' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | 11.34 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 11.34x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00043 | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | 8.19 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 8.19x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00044 | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | 4.49 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 4.49x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00045 | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1995-07-15'
AND l_shipdate < '1996-07-15'
AND l_discount BETWEEN 0.07 AND 0.09
AND l_quantity < 25; | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1995-07-15'
AND l_shipdate < '1996-07-15'
AND l_discount BETWEEN 0.07 AND 0.09
AND l_quantity < 25; | 14.95 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 14.95x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00046 | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | SELECT l_shipmode,
SUM(CASE WHEN o_orderpriority = '1-URGENT' OR o_orderpriority = '2-HIGH'
THEN 1 ELSE 0 END) AS high_line_count,
SUM(CASE WHEN o_orderpriority <> '1-URGENT' AND o_orderpriority <> '2-HIGH'
THEN 1 ELSE 0 END) AS low_line_coun... | 6.68 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.68x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00047 | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-03-01'
AND o_orderdate < '1993-06-01'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-03-01'
AND o_orderdate < '1993-06-01'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | 2.03 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.03x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00048 | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | SELECT c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice,
SUM(l_quantity) AS total_qty
FROM customer
JOIN orders ON c_custkey = o_custkey
JOIN lineitem ON l_orderkey = o_orderkey
GROUP BY c_name, c_custkey, o_orderkey, o_orderdate, o_totalprice
HAVING SUM(l_... | 12.1 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 12.1x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00049 | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | 2.79 | Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.79x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00050 | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1997-05-14'
AND l_shipdate < '1997-08-14'
GROUP BY ... | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1997-05-14'
AND l_shipdate < '1997-08-14'
GROUP BY ... | 5.79 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 5.79x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00051 | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | 2.5 | Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.5x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00052 | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-01-16'
AND o_orderdate < '1993-04-16'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | SELECT o_orderpriority, COUNT(*) AS order_count
FROM orders
WHERE o_orderdate >= '1993-01-16'
AND o_orderdate < '1993-04-16'
AND EXISTS (
SELECT 1 FROM lineitem
WHERE l_orderkey = o_orderkey
AND l_commitdate < l_receiptdate
)
... | 2.37 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.37x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00053 | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1996-03-10'
AND l_shipdate < '1996-06-10'
GROUP BY ... | SELECT s_suppkey, s_name, s_address, s_phone, total_revenue
FROM supplier
JOIN (
SELECT l_suppkey, SUM(l_extendedprice * (1 - l_discount)) AS total_revenue
FROM lineitem
WHERE l_shipdate >= '1996-03-10'
AND l_shipdate < '1996-06-10'
GROUP BY ... | 6.93 | Nested subqueries present, creating potential correlated loop overhead. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.93x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00054 | SELECT c_count, COUNT(*) AS custdist
FROM (
SELECT c_custkey, COUNT(o_orderkey) AS c_count
FROM customer
LEFT JOIN orders ON c_custkey = o_custkey
AND o_comment NOT LIKE '%unusual%packages%'
GROUP BY c_custkey
) AS c_orders
GROUP BY... | SELECT c_count, COUNT(*) AS custdist
FROM (
SELECT c_custkey, COUNT(o_orderkey) AS c_count
FROM customer
LEFT JOIN orders ON c_custkey = o_custkey
AND o_comment NOT LIKE '%unusual%packages%'
GROUP BY c_custkey
) AS c_orders
GROUP BY... | 6.74 | Nested subqueries present, creating potential correlated loop overhead. Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.74x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00055 | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'UNITED KINGDOM'
AND l1.l_receiptdate > l1.l... | SELECT s_name, COUNT(*) AS numwait
FROM supplier
JOIN lineitem l1 ON s_suppkey = l1.l_suppkey
JOIN orders ON l1.l_orderkey = o_orderkey
JOIN nation ON s_nationkey = n_nationkey
WHERE o_orderstatus = 'F'
AND n_name = 'UNITED KINGDOM'
AND l1.l_receiptdate > l1.l... | 17.84 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 17.84x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00056 | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1994-07-27'
AND l_shipdate < '1995-07-27'
AND l_discount BETWEEN 0.02 AND 0.04
AND l_quantity < 24; | SELECT SUM(l_extendedprice * l_discount) AS revenue
FROM lineitem
WHERE l_shipdate >= '1994-07-27'
AND l_shipdate < '1995-07-27'
AND l_discount BETWEEN 0.02 AND 0.04
AND l_quantity < 24; | 15.73 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 15.73x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00057 | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | SELECT l_returnflag, l_linestatus,
SUM(l_quantity) AS sum_qty,
SUM(l_extendedprice) AS sum_base_price,
SUM(l_extendedprice * (1 - l_discount)) AS sum_disc_price,
SUM(l_extendedprice * (1 - l_discount) * (1 + l_tax)) AS sum_charge,
AVG(l_quantity... | 55.35 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 55.35x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00058 | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | 4.55 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 4.55x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00059 | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | SELECT n1.n_name AS supp_nation, n2.n_name AS cust_nation,
SUM(l_extendedprice * (1 - l_discount)) AS revenue
FROM supplier
JOIN lineitem ON s_suppkey = l_suppkey
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
JOIN nation n1 ON s_nati... | 3.12 | Complex multi-table join structure with 5 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 3.12x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00060 | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | SELECT 100.00 * SUM(CASE WHEN p_type LIKE 'PROMO%'
THEN l_extendedprice * (1 - l_discount)
ELSE 0 END)
/ SUM(l_extendedprice * (1 - l_discount)) AS promo_revenue
FROM lineitem
JOIN part ON l_partkey = p_partkey
WHER... | 2.93 | Pattern matching using LIKE may inhibit standard B-Tree index lookups. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 2.93x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00061 | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'MOROCCO' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | SELECT o_orderdate,
SUM(CASE WHEN n_name = 'MOROCCO' THEN l_extendedprice * (1 - l_discount) ELSE 0 END) AS nation_rev,
SUM(l_extendedprice * (1 - l_discount)) AS total_rev
FROM lineitem
JOIN orders ON l_orderkey = o_orderkey
JOIN customer ON o_custkey = c_custkey
... | 10.19 | Complex multi-table join structure with 3 joins requiring optimal join reordering. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 10.19x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
qp_00062 | SELECT ps_partkey, SUM(ps_supplycost * ps_availqty) AS value
FROM partsupp
JOIN supplier ON ps_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'FRANCE'
GROUP BY ps_partkey
HAVING SUM(ps_supplycost * ps_availqty) > 997287
ORDER BY value ... | SELECT ps_partkey, SUM(ps_supplycost * ps_availqty) AS value
FROM partsupp
JOIN supplier ON ps_suppkey = s_suppkey
JOIN nation ON s_nationkey = n_nationkey
WHERE n_name = 'FRANCE'
GROUP BY ps_partkey
HAVING SUM(ps_supplycost * ps_availqty) > 997287
ORDER BY value ... | 6.72 | High row scanning overhead on unindexed filter attributes. | Restructured query filters and join ordering to reduce intermediate Cartesian volume. Observed engine acceleration factor of 6.72x when evaluated on column-store execution. | duckdb | [
{
"role": "system",
"content": "You are QueryPilot-SLM, an expert database optimization assistant. Analyze the provided SQL query and execution context. Identify the performance bottleneck, explain the optimization reasoning, and generate a high-performance, semantically equivalent optimized SQL query."
}... |
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