Hi,
I have a table with this schema:
CREATE TABLE billing.bill
(
sno serial NOT NULL,
billno int4,
det date NOT NULL,
.
.
.
CONSTRAINT bill_pkey PRIMARY KEY (sno)
)
I want to execute a query that will not return any record. Which of
these queries is cheaper please?
1. Select * from billing.bill where 1=0
2. Select * from billing.bill where sno=0
Thanks for your assistance.
Chris.