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Have TRUNCATE advance the affected table's relfrozenxid to RecentXmin, to

author Alvaro Herrera <alvherre@alvh.no-ip.org>

2007年5月16日 17:28:20 +0000 (17:28 +0000)

committer Alvaro Herrera <alvherre@alvh.no-ip.org>

2007年5月16日 17:28:20 +0000 (17:28 +0000)

commit 90cbc63fd10adaeb01c3180156e0e48eee08b5ed

tree 07fc1b8f4efd7d6c4e469ea41a7f9f13b4a23ac9 tree

parent dfed0012bc03c3cda94e75af54e9c774556c9787 commit | diff

Have TRUNCATE advance the affected table's relfrozenxid to RecentXmin, to
avoid a later needless VACUUM for Xid-wraparound purposes. We can do this
since the table is known to be left empty, so no Xid remains on it.

Per discussion.

src/backend/catalog/index.c diff | blob | blame | history

src/backend/commands/tablecmds.c diff | blob | blame | history

src/include/catalog/index.h diff | blob | blame | history

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