Add FTS to tag_llist* field

create_fts.py

@@ -0,0 +1,35 @@
+from tqdm import tqdm
+from db import *
+
+
+PostFTS.create_table()
+for data in tqdm(
+    chunked(
+        db.execute_sql(
+            "SELECT "
+            "id, "
+            "tag_list, "
+            "tag_list_general, "
+            "tag_list_artist, "
+            "tag_list_character, "
+            "tag_list_copyright, "
+            "tag_list_meta "
+            "FROM post;"
+        ).fetchall(),
+        5000,
+    )
+):
+    PostFTS.insert_many(
+        [
+            dict(
+                rowid=i[0],
+                tag_list=i[1],
+                tag_list_general=i[2],
+                tag_list_artist=i[3],
+                tag_list_character=i[4],
+                tag_list_copyright=i[5],
+                tag_list_meta=i[6],
+            )
+            for i in data
+        ]
+    ).on_conflict_ignore().execute()

danbooru2023.db

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f1f5a70ad1d6c49e048c8ede2cc0b257e462197876fefb2edd05f92484458d34
-size 9802588160
+oid sha256:16c23b0d61161aa777802dc4d0414402c8f7cf2b1535998449afdec8ae51dd61
+size 10739814400

db.py

@@ -1,6 +1,8 @@
 import pathlib
 import sqlite3
+
 from peewee import *
+from playhouse.sqlite_ext import FTS5Model, SearchField
 
 
 class MemoryConnection(sqlite3.Connection):
@@ -46,7 +48,7 @@ def get_tag_by_id(id):
     return tag_cache_map[id]
 
 
-class TagListField(TextField):
+class TagListField(TextField, SearchField):
     def db_value(self, value):
         if isinstance(value, str):
             return value
@@ -111,6 +113,18 @@ class Post(BaseModel):
     tag_count_meta = IntegerField()
 
 
+class PostFTS(FTS5Model):
+    class Meta:
+        database = db
+
+    tag_list = TagListField()
+    tag_list_general = TagListField()
+    tag_list_artist = TagListField()
+    tag_list_character = TagListField()
+    tag_list_copyright = TagListField()
+    tag_list_meta = TagListField()
+
+
 class Tag(BaseModel):
     id = IntegerField(primary_key=True)
     name = CharField(unique=True)

profiling.py

@@ -0,0 +1,41 @@
+from time import time_ns as tns
+from db import *
+
+
+print('warm up for tag_cache')
+posts = list(Post.select().where(Post.tag_list.contains("$6KMR#")))
+
+
+print('start profiling')
+
+t0 = tns()
+posts = list(
+    Post.select(Post, PostFTS)
+        .join(PostFTS, on = (Post.id == PostFTS.rowid))
+        .where(PostFTS.tag_list.match('"$6KMR#"'))
+)
+t1 = tns()
+print((t1 - t0) / 1e9)
+print(len(posts))
+
+
+t0 = tns()
+data = list(
+    i[0]
+    for i in db.execute_sql(
+        "SELECT id FROM post WHERE tag_list LIKE '%$6KMR#%';"
+    ).fetchall()
+)
+posts = list(Post.select().where(Post.id << data))
+t1 = tns()
+print((t1 - t0) / 1e9)
+print(len(data))
+print(posts[0].tag_list)
+
+
+t0 = tns()
+posts = list(Post.select().where(Post.tag_list.contains("$6KMR#")))
+t1 = tns()
+print((t1 - t0) / 1e9)
+print(len(posts))
+print(posts[0].tag_list)