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Propagate query IDs of utility statements in functions

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For utility statements defined within a function, the query tree is
copied to a PlannedStmt as utility commands do not require planning.
However, the query ID was missing from the information passed down.

This leads to plugins relying on the query ID like pg_stat_statements to
not be able to track utility statements within function calls.  Tests
are added to check this behavior, depending on pg_stat_statements.track.

This is an old bug.  Now, query IDs for utilities are compiled using
their parsed trees rather than the query string since v16
(3db72ebcbe), leading to less bloat with utilities, so backpatch down
only to this version.

Author: Anthonin Bonnefoy
Discussion: https://postgr.es/m/CAO6_XqrGp-uwBqi3vBPLuRULKkddjC7R5QZCgsFren=8E+m2Sg@mail.gmail.com
Backpatch-through: 16
This commit is contained in:
Michael Paquier 2024-07-19 10:21:01 +09:00
parent cd85ae1114
commit c145f321b6
3 changed files with 68 additions and 0 deletions
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45
contrib/pg_stat_statements/expected/level_tracking.out
View File

@ -67,6 +67,51 @@ SELECT toplevel, calls, query FROM pg_stat_statements
t | 1 | SET pg_stat_statements.track = 'all'
(7 rows)
-- Procedure with multiple utility statements.
CREATE OR REPLACE PROCEDURE proc_with_utility_stmt()
LANGUAGE SQL
AS $$
SHOW pg_stat_statements.track;
show pg_stat_statements.track;
SHOW pg_stat_statements.track_utility;
$$;
SET pg_stat_statements.track_utility = TRUE;
-- all-level tracking.
SET pg_stat_statements.track = 'all';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
CALL proc_with_utility_stmt();
SELECT toplevel, calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
toplevel | calls | query
----------+-------+----------------------------------------------------
t | 1 | CALL proc_with_utility_stmt()
t | 1 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
f | 2 | SHOW pg_stat_statements.track
f | 1 | SHOW pg_stat_statements.track_utility
(4 rows)
-- top-level tracking.
SET pg_stat_statements.track = 'top';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
CALL proc_with_utility_stmt();
SELECT toplevel, calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
toplevel | calls | query
----------+-------+----------------------------------------------------
t | 1 | CALL proc_with_utility_stmt()
t | 1 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
(2 rows)
-- DO block - top-level tracking without utility.
SET pg_stat_statements.track = 'top';
SET pg_stat_statements.track_utility = FALSE;

22
contrib/pg_stat_statements/sql/level_tracking.sql
View File

@ -33,6 +33,28 @@ END; $$;
SELECT toplevel, calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
-- Procedure with multiple utility statements.
CREATE OR REPLACE PROCEDURE proc_with_utility_stmt()
LANGUAGE SQL
AS $$
SHOW pg_stat_statements.track;
show pg_stat_statements.track;
SHOW pg_stat_statements.track_utility;
$$;
SET pg_stat_statements.track_utility = TRUE;
-- all-level tracking.
SET pg_stat_statements.track = 'all';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
CALL proc_with_utility_stmt();
SELECT toplevel, calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
-- top-level tracking.
SET pg_stat_statements.track = 'top';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
CALL proc_with_utility_stmt();
SELECT toplevel, calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
-- DO block - top-level tracking without utility.
SET pg_stat_statements.track = 'top';
SET pg_stat_statements.track_utility = FALSE;

1
src/backend/executor/functions.c
View File

@ -492,6 +492,7 @@ init_execution_state(List *queryTree_list,
stmt->utilityStmt = queryTree->utilityStmt;
stmt->stmt_location = queryTree->stmt_location;
stmt->stmt_len = queryTree->stmt_len;
stmt->queryId = queryTree->queryId;
}
else
stmt = pg_plan_query(queryTree,