On Thu, Jan 26, 2012 at 3:37 PM, Jon Smark <jon.sm...@yahoo.com> wrote:
> Hi, > > Is it possible to do the equivalent of let-bindings in a pure SQL function? > I have a SELECT that invokes "now" multiple times. It would be nicer > to do it only once and reuse the value. Something like this: > > LET right_now = SELECT now () IN > SELECT * FROM my_table WHERE right_now >= start AND ... > > In PL/pgSQL this is easy, but I wonder about SQL... > > WITH param AS ( select now() as p_start, somefunc() as p_something ) SELECT * FROM param,my_table WHERE right_now >= param.p_start AND ...
