Re: Need help optimizing this query

On Jul 18, 2007, at 16:01 , Michael Glaesemann wrote:

> CREATE OR REPLACE FUNCTION one_when(BOOLEAN)
> RETURNS INTEGER
> LANGUAGE SQL as $_$SELECT value_when($1,1)$_$;

I forgot to add that you can cast booleans to integers, so one_when
(expr) is equivalent to expr::int:

# SELECT (true and false)::int, (true or false)::int;
int4 | int4
------+------
     0 |    1
(1 row)

Of course, this rewriting shouldn't affect the performance at all: it
should just make it easier for you to read, which does have some value.

Michael Glaesemann
grzm seespotcode net