Tom Lane 1f5ca045a4 Disallow aggregate functions in UPDATE commands (unless within a sub-SELECT). ...

This is disallowed by the SQL spec because it doesn't have any very sensible
interpretation.  Historically Postgres has allowed it but behaved strangely.
As of PG 8.1 a server crash is possible if the MIN/MAX index optimization gets
applied; rather than try to "fix" that, it seems best to just enforce the
spec restriction.  Per report from Josh Drake and Alvaro Herrera.

2006-06-21 18:30:11 +00:00

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