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daa8365a90
Applying normalization changes how the following query strings are
reflected in pg_stat_statements, by showing Const nodes with a
dollar-signed parameter as this is how such queries are structured
internally once parsed:
- DECLARE
- EXPLAIN
- CREATE MATERIALIZED VIEW
- CREATE TABLE AS
More normalization could be done in the future depending on the parts
where query jumbling is applied (like A_Const nodes?), the changes being
reflected in the regression tests in majority created in de2aca2. This
just allows the basics to work for utility queries using Const nodes.
Reviewed-by: Bertrand Drouvot
Discussion: https://postgr.es/m/Y+MRdEq9W9XVa2AB@paquier.xyz
71 lines
1.9 KiB
Plaintext
71 lines
1.9 KiB
Plaintext
--
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-- Cursors
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--
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-- These tests require track_utility to be enabled.
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SET pg_stat_statements.track_utility = TRUE;
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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-- DECLARE
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-- SELECT is normalized.
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DECLARE cursor_stats_1 CURSOR WITH HOLD FOR SELECT 1;
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CLOSE cursor_stats_1;
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DECLARE cursor_stats_1 CURSOR WITH HOLD FOR SELECT 2;
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CLOSE cursor_stats_1;
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SELECT calls, rows, query FROM pg_stat_statements ORDER BY query COLLATE "C";
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calls | rows | query
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-------+------+-------------------------------------------------------
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2 | 0 | CLOSE cursor_stats_1
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2 | 0 | DECLARE cursor_stats_1 CURSOR WITH HOLD FOR SELECT $1
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1 | 1 | SELECT pg_stat_statements_reset()
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(3 rows)
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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-- FETCH
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BEGIN;
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DECLARE cursor_stats_1 CURSOR WITH HOLD FOR SELECT 2;
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DECLARE cursor_stats_2 CURSOR WITH HOLD FOR SELECT 3;
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FETCH 1 IN cursor_stats_1;
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?column?
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----------
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2
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(1 row)
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FETCH 1 IN cursor_stats_2;
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?column?
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----------
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3
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(1 row)
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CLOSE cursor_stats_1;
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CLOSE cursor_stats_2;
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COMMIT;
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SELECT calls, rows, query FROM pg_stat_statements ORDER BY query COLLATE "C";
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calls | rows | query
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-------+------+-------------------------------------------------------
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1 | 0 | BEGIN
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1 | 0 | CLOSE cursor_stats_1
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1 | 0 | CLOSE cursor_stats_2
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1 | 0 | COMMIT
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1 | 0 | DECLARE cursor_stats_1 CURSOR WITH HOLD FOR SELECT $1
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1 | 0 | DECLARE cursor_stats_2 CURSOR WITH HOLD FOR SELECT $1
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1 | 1 | FETCH 1 IN cursor_stats_1
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1 | 1 | FETCH 1 IN cursor_stats_2
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1 | 1 | SELECT pg_stat_statements_reset()
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(9 rows)
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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