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Re: function side effects - Mailing list pgsql-hackers

Peter Eisentraut <[email protected]> writes:
> SQL standard:

> <SQL-data access indication> ::=
> NO SQL
> | CONTAINS SQL
> | READS SQL DATA
> | MODIFIES SQL DATA

Huh.  I understand three of those, but what is the use of CONTAINS SQL?
Seems like that would have to be the same as the last one, or maybe
the next-to-last one if you're prepared to assume it's read-only SQL.
        regards, tom lane


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