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Parameterize FTS detection

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This commit is contained in:
Simon Willison 2026-09-10 16:01:31 -07:00
commit 0e80aaf4c2
1 changed files with 19 additions and 13 deletions
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32
datasette/utils/__init__.py
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@ -591,7 +591,8 @@ def detect_spatialite(conn):
def detect_fts(conn, table):
"""Detect if table has a corresponding FTS virtual table and return it"""
rows = conn.execute(detect_fts_sql(table)).fetchall()
sql, params = detect_fts_sql(table)
rows = conn.execute(sql, params).fetchall()
if len(rows) == 0:
return None
else:
@ -599,19 +600,24 @@ def detect_fts(conn, table):
def detect_fts_sql(table):
return r"""
select name from sqlite_master
where rootpage = 0
and (
sql like '%VIRTUAL TABLE%USING FTS%content="{table}"%'
or sql like '%VIRTUAL TABLE%USING FTS%content=[{table}]%'
or (
tbl_name = "{table}"
and sql like '%VIRTUAL TABLE%USING FTS%'
return (
r"""
select name from sqlite_master
where rootpage = 0
and (
sql like :fts_double_quoted
or sql like :fts_bracket_quoted
or (
tbl_name = :table
and sql like '%VIRTUAL TABLE%USING FTS%'
)
)
)
""".format(
table=table.replace("'", "''")
""",
{
"fts_double_quoted": f'%VIRTUAL TABLE%USING FTS%content="{table}"%',
"fts_bracket_quoted": f"%VIRTUAL TABLE%USING FTS%content=[{table}]%",
"table": table,
},
)