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From: Peter Eisentraut on 2 Mar 2010 05:28
On mån, 2010-03-01 at 16:29 -0500, Tom Lane wrote:
> Peter Eisentraut <peter_e(a)gmx.net> 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?

My reading is that CONTAINS SQL allows/indicates the use of non-data
statements such as CREATE or ALTER, whereas READS SQL DATA and MODIFIES
SQL DATA specifically refer to reading or writing table data.


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