Ack - sorry - can someone remind me the SQL format for this?
if you have a linked CLIENTS and INVOICES table...
...what's the query to find CLIENTS with NO INVOICES?
(say 'clientid' is the name of the field in both clients and invoices table)
I think it's some kind of join=NULL but I'm stuck.
From page 165 MySQL (New Riders):
LEFT JOIN:
SELECT t1.* FROM t1 LEFT JOIN t2
ON t1.i1 = t2.i2
WHERE t2.i2 IS NULL
-- david
Ack - sorry - can someone remind me the SQL format for this?
if you have a linked CLIENTS and INVOICES table...
...what's the query to find CLIENTS with NO
