On Sun, 16 Nov 2003, Yasir Malik wrote:
> I think I am almost at a solution to my last question. I can do
> select int4(a) from test;
> to convert to an integer. So now addition and
> subtraction can be done between bit types. But how do I convert back to
> BIT type? If I do
> select bit(int4(b'1001'));
>
> I get the following message:
> ERROR: parser: parse error at or near "int4" at character 12
>
> Can anyone tell me why the bit function is not working? It's under the
> pg_catalog schema.
It's also the name of a type that takes a precision in parentheses, so
you'd have to say "bit"(...) with the quotes. As a note, I think
that's going to effectively return you a bit(32), so
sszabo=# select "bit"(int4(b'1001'));
bit
----------------------------------
00000000000000000000000000001001
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