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Álvaro Herrera c2da1a5d63 Make query jumbling also squash PARAM_EXTERN params ... Commit 62d712ecfd made query jumbling squash lists of Consts as a single element, but there's no reason not to treat PARAM_EXTERN parameters the same. For these purposes, these values are indeed constants for any particular execution of a query. In particular, this should make list squashing more useful for applications using extended query protocol, which would use parameters extensively. A complication arises: if a query has both external parameters and squashable lists, then the parameter number used as placeholder for the squashed list might be inconsistent with regards to the parameter numbers used by the query literal. To reduce the surprise factor, all parameters are renumbered starting from 1 in that case. 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		5 days ago
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cleanup.sql	Refactor tests of pg_stat_statements for planning, utility and level tracking	2 years ago
cursors.sql	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago
dml.sql	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago
entry_timestamp.sql	Track statement entry timestamp in contrib/pg_stat_statements	2 years ago
extended.sql	Make query jumbling also squash PARAM_EXTERN params	5 days ago
level_tracking.sql	Fix regression with location calculation of nested statements	1 month ago
oldextversions.sql	pg_stat_statements: Add columns to track parallel worker activity	9 months ago
parallel.sql	pg_stat_statements: Add columns to track parallel worker activity	9 months ago
planning.sql	Revert support for improved tracking of nested queries	2 weeks ago
privileges.sql	pg_stat_statements: Add regression test for privilege handling.	11 months ago
select.sql	Fix squashing algorithm for query texts	2 weeks ago
squashing.sql	Make query jumbling also squash PARAM_EXTERN params	5 days ago
user_activity.sql	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago
utility.sql	pg_stat_statements: Expand tests for SET statements	9 months ago
wal.sql	Add NOT NULL checking of pg_stat_statements_reset() in tests	2 years ago