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Álvaro Herrera 0f65f3eec4 Fix squashing algorithm for query texts ... The algorithm to squash lists of constants added by commit 62d712ecfd was a bit too simplistic; we wanted to avoid adding unnecessary complexity, but cases like direct function calls of typecasting functions (and others) were missed, and bogus SQL syntax was being shown in pg_stat_statements normalized query text field. To fix normalization for those cases, we need the parser to transmit information about were each list of constant values starts and ends, so add that to a couple of nodes. Also add a few more test cases to make sure we're doing the right thing. The patch initially submitted by Sami added a new private struct in gram.y to carry the start/end information for A_Expr, but I (Álvaro) decided that a better fix was to remove the parser indirection via the in_expr production, and instead create separate components in the a_expr rule. I'm surprised that this works and doesn't require more changes, but I assume (without checking) that the grammar used to be more complex and got simplified at some point. Bump catversion. Author: Sami Imseih <samimseih@gmail.com> Author: Dmitry Dolgov <9erthalion6@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/CAA5RZ0tRXoPG2y6bMgBCWNDt0Tn=unRerbzYM=oW0syi1=C1OA@mail.gmail.com		6 months ago
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cleanup.out	Refactor tests of pg_stat_statements for planning, utility and level tracking	3 years ago
cursors.out	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago
dml.out	Remove the query_id_squash_values GUC	9 months ago
entry_timestamp.out	Track statement entry timestamp in contrib/pg_stat_statements	2 years ago
extended.out	pg_stat_statements: Fix parameter number gaps in normalized queries	7 months ago
level_tracking.out	Revert support for improved tracking of nested queries	6 months ago
oldextversions.out	pg_stat_statements: Add wal_buffers_full	10 months ago
parallel.out	pg_stat_statements: Add columns to track parallel worker activity	1 year ago
planning.out	Revert support for improved tracking of nested queries	6 months ago
privileges.out	pg_stat_statements: Add regression test for privilege handling.	1 year ago
select.out	Fix squashing algorithm for query texts	6 months ago
squashing.out	Fix squashing algorithm for query texts	6 months ago
user_activity.out	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago
utility.out	Revert support for improved tracking of nested queries	6 months ago
wal.out	Show values of SET statements as constants in pg_stat_statements	1 year ago