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Remove the new UPSERT command tag and use INSERT instead.

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Previously, INSERT with ON CONFLICT DO UPDATE specified used a new
command tag -- UPSERT.  It was introduced out of concern that INSERT as
a command tag would be a misrepresentation for ON CONFLICT DO UPDATE, as
some affected rows may actually have been updated.

Alvaro Herrera noticed that the implementation of that new command tag
was incomplete; in subsequent discussion we concluded that having it
doesn't provide benefits that are in line with the compatibility breaks
it requires.

Catversion bump due to the removal of PlannedStmt->isUpsert.

Author: Peter Geoghegan
Discussion: 20150520215816.GI5885@postgresql.org
This commit is contained in:
Andres Freund
2015-05-23 00:49:27 +02:00
parent 49ad32d5d9
commit 631d749007
9 changed files with 15 additions and 49 deletions
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src/backend/nodes/outfuncs.c
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@ -243,7 +243,6 @@ _outPlannedStmt(StringInfo str, const PlannedStmt *node)
WRITE_UINT_FIELD(queryId);
WRITE_BOOL_FIELD(hasReturning);
WRITE_BOOL_FIELD(hasModifyingCTE);
WRITE_BOOL_FIELD(isUpsert);
WRITE_BOOL_FIELD(canSetTag);
WRITE_BOOL_FIELD(transientPlan);
WRITE_NODE_FIELD(planTree);