Only the User Number
A service check on orders returns only user_id for user_id = 7. Add an index on user_id so this tiny result can be produced as quickly as possible.
Speed this query up with an index
SELECT user_id FROM orders WHERE user_id = 7
Díreach CREATE/ALTER/DROP — ní gá SELECT ina dhiaidh sin.
Logáil isteach chun stair na n-aighneachtaí a fheiceáil
Logáil isteachLogáil isteach chun an Meantóir IS a úsáid
Logáil isteach