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path: root/src/backend/statistics/stat_utils.c
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2025-03-25Stats: use schemaname/relname instead of regclass.Jeff Davis
For import and export, use schemaname/relname rather than regclass. This is more natural during export, fits with the other arguments better, and it gives better control over error handling in case we need to downgrade more errors to warnings. Also, use text for the argument types for schemaname, relname, and attname so that casts to "name" are not required. Author: Corey Huinker <corey.huinker@gmail.com> Discussion: https://postgr.es/m/CADkLM=ceOSsx_=oe73QQ-BxUFR2Cwqum7-UP_fPe22DBY0NerA@mail.gmail.com
2025-03-05Address stats import review comments.Jeff Davis
Reported-by: jian he <jian.universality@gmail.com> Discussion: https://postgr.es/m/CACJufxHG9MBQozbJQ4JRBcRbUO+t+sx4qLZX092rS_9b4SR_EA@mail.gmail.com
2025-02-25Remove redundant pg_set_*_stats() variants.Jeff Davis
After commit f3dae2ae58, the primary purpose of separating the pg_set_*_stats() from the pg_restore_*_stats() variants was eliminated. Leave pg_restore_relation_stats() and pg_restore_attribute_stats(), which satisfy both purposes, and remove pg_set_relation_stats() and pg_set_attribute_stats(). Reviewed-by: Corey Huinker <corey.huinker@gmail.com> Discussion: https://postgr.es/m/1457469.1740419458@sss.pgh.pa.us
2025-02-10Lock table in ShareUpdateExclusive when importing index stats.Jeff Davis
Follow locking behavior of ANALYZE when importing statistics. In particular, when importing index statistics, the table must be locked in ShareUpdateExclusive mode. Fixes bug reportd by Jian He. ANALYZE doesn't update statistics on partitioned indexes, and the locking requirements are slightly different for in-place updates on partitioned indexes versus normal indexes. To be conservative, lock both the partitioned table and the partitioned index in ShareUpdateExclusive mode when importing stats for a partitioned index. Author: Corey Huinker Reported-by: Jian He Reviewed-by: Michael Paquier Discussion: https://www.postgresql.org/message-id/CACJufxGreTY7qsCV8%2BBkuv0p5SXGTScgh%3DD%2BDq6%3D%2B_%3DXTp7FWg%40mail.gmail.com
2025-01-02Fix an assortment of spelling mistakes and typosDavid Rowley
Author: Alexander Lakhin <exclusion@gmail.com> Discussion: https://postgr.es/m/5812a0b9-b0cf-4151-9a14-d9f00e4f2858@gmail.com
2025-01-01Update copyright for 2025Bruce Momjian
Backpatch-through: 13
2024-10-24Add functions pg_restore_relation_stats(), pg_restore_attribute_stats().Jeff Davis
Similar to the pg_set_*_stats() functions, except with a variadic signature that's designed to be more future-proof. Additionally, most problems are reported as WARNINGs rather than ERRORs, allowing most stats to be restored even if some cannot. These functions are intended to be called from pg_dump to avoid the need to run ANALYZE after an upgrade. Author: Corey Huinker Discussion: https://postgr.es/m/CADkLM=eErgzn7ECDpwFcptJKOk9SxZEk5Pot4d94eVTZsvj3gw@mail.gmail.com
2024-10-22Add functions pg_set_attribute_stats() and pg_clear_attribute_stats().Jeff Davis
Enable manipulation of attribute statistics. Only superficial validation is performed, so it's possible to add nonsense, and it's up to the planner (or other users of statistics) to behave reasonably in that case. Bump catalog version. Author: Corey Huinker Discussion: https://postgr.es/m/CADkLM=eErgzn7ECDpwFcptJKOk9SxZEk5Pot4d94eVTZsvj3gw@mail.gmail.com
2024-10-16Fix #include order from e839c8ecc9.Jeff Davis
Reported-by: Alexander Korotkov Discussion: https://postgr.es/m/CAPpHfduAiGSsvUc614Z-JOnyQffcMeJncWMF2HnUL8wFy4fuWA@mail.gmail.com
2024-10-11Create functions pg_set_relation_stats, pg_clear_relation_stats.Jeff Davis
These functions are used to tweak statistics on any relation, provided that the user has MAINTAIN privilege on the relation, or is the database owner. Bump catalog version. Author: Corey Huinker Discussion: https://postgr.es/m/CADkLM=eErgzn7ECDpwFcptJKOk9SxZEk5Pot4d94eVTZsvj3gw@mail.gmail.com