"Thomas Mueller" <[EMAIL PROTECTED]> writes:
> SET ALLOW_LITERALS NONE;

I think you missed April Fool's Day...

This is just silly, as it makes life impossibly painful for users
(constants are hardly a useless part of SQL) and it doesn't really
plug any holes.  As an example:

        select * from tab where intcol = intcol; delete from tab;

contains no literals and yet the delete is very probably injected.

                        regards, tom lane

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