Table: cricket_2007_08
Columns: player
wkts
runs
econ
ovrs

Question: Name the least ovrs for wkts of 0
SQL: SELECT MIN("ovrs") FROM cricket_2007_08 WHERE "wkts" = 0

Question: Name the average econ for runs more than 703 and ovrs more than 25.5
SQL: SELECT AVG("econ") FROM cricket_2007_08 WHERE "ovrs" > 25.5 AND "runs" > 703