Very odd, what are you trying?
kleptog=# select nullif('','') is null;
?column?
----------
t
(1 row)
kleptog=# select nullif('1','') is null;
?column?
----------
f
(1 row)
Works for me.
Have a nice day,
On Thu, Aug 25, 2005 at 01:44:52PM -0700, Matt A. wrote:
> We used nullif('$value','') on inserts in mssql. We
> moved to postgres but the nullif() function doesn't
> match empty strings to each other to return null.
>
> MS SQL2000 nullif('1','') would insert 1 as integer
> even though wrapped in '' (aka string). Also
> nullif('','') would evaluate NULL (both equal returns
> NULL) and insert the "not a value" accordingly, not
> return text 'NULL' instead of return NULL if '' == ''.
> Postgresql will through an error since the defined
> return type is text.
>
> I would like to alter this function all together. How
> could I find it to manipulate it?
>
> We cannot always enter a value for a integer, text,
> boolean, etc column.
>
> Is there any other way to accomplish this in any
> language? C? Python? PL/x? If so can you suggest where
> we could learn how to do this or provide an example?
>
> Please help.
>
> Domo
> Matthew
>
>
>
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Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/
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