Allow SQL-language functions to return the output of an INSERT/UPDATE/DELETE

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RETURNING clause, not just a SELECT as formerly.

A side effect of this patch is that when a set-returning SQL function is used
in a FROM clause, performance is improved because the output is collected into
a tuplestore within the function, rather than using the less efficient
value-per-call mechanism.

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This commit is contained in:

Tom Lane

2008-10-31 19:37:56 +00:00

parent cd97f98844

commit 9b46abb7c4

11 changed files with 833 additions and 312 deletions

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src/backend/executor/functions.c

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