At 08:31 PM 11/29/00 +0530, Sanjay Arora wrote:
>Well I want to use nested select statements ,is it possible.
In PG 7.0 you can use subselects in the "where" clause.
>Is there any counterpart for 'Sysdate from dual' as in Oracle
You don't need "dual", just "select now()" will work.
If you're porting Oracle code, you can make life a lot easier by
defining some stuff:
create function sysdate() returns datetime as '
begin
return ''now'';
end;' language 'plpgsql';
create view dual as select sysdate();
Then "select sysdate from dual", "select (any expression) from dual", etc all do what
you'd expect.
- Don Baccus, Portland OR <[EMAIL PROTECTED]>
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Rare Bird Alert Service and other goodies at
http://donb.photo.net.
