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Commit 76ce39e3 authored by Tom Lane's avatar Tom Lane
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Prevent ExecInsert() and ExecUpdate() from scribbling on the result tuple 

slot of the topmost plan node when a trigger returns a modified tuple.
These appear to be the only places where a plan node's caller did not
treat the result slot as read-only, which is an assumption that nodeUnique
makes as of 8.1.  Fixes trigger-vs-DISTINCT bug reported by Frank van Vugt.
parent 08ee64eb
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