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This commit adds support for pg_stat_kind_info, that exposes at SQL level data about the statistics kinds registered into a backend: - Meta-data of a stats kind (built-in or custom, some properties). - Number of entries, if tracking is enabled. We have discussed the possibility of more fields (like shared memory size for a single entry); this adds the minimum agreed on. This is in spirit similar to pg_get_loaded_modules() for custom stats kinds, this view providing detailed information about the stats kinds when registered through shared_preload_libraries. Bump catalog version. Author: Tristan Partin <tristan@partin.io> Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com> Reviewed-by: Sami Imseih <samimseih@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Discussion: https://postgr.es/m/DI6OFGHJ1B69.25YVDEP3BABRH@partin.io |
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