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Disabling this option is useful to run VACUUM (with or without FULL) on only the toast table of a relation, bypassing the main relation. This option is enabled by default. Running directly VACUUM on a toast table was already possible without this feature, by using the non-deterministic name of a toast relation (as of pg_toast.pg_toast_N, where N would be the OID of the parent relation) in the VACUUM command, and it required a scan of pg_class to know the name of the toast table. So this feature is basically a shortcut to be able to run VACUUM or VACUUM FULL on a toast relation, using only the name of the parent relation. A new switch called --no-process-main is added to vacuumdb, to work as an equivalent of PROCESS_MAIN. Regression tests are added to cover VACUUM and VACUUM FULL, looking at pg_stat_all_tables.vacuum_count to see how many vacuums have run on each table, main or toast. Author: Nathan Bossart Reviewed-by: Masahiko Sawada Discussion: https://postgr.es/m/20221230000028.GA435655@nathanxps13 |
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backend | ||
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common | ||
fe_utils | ||
include | ||
interfaces | ||
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pl | ||
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template | ||
test | ||
timezone | ||
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.gitignore | ||
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Makefile | ||
Makefile.global.in | ||
Makefile.shlib | ||
meson.build | ||
nls-global.mk |