sql - How to use IF Else in store procedure? -


i trying execute select query id parameter, if id empty want rows, otherwise row contains id, far, have created store procedure,

if(@custid = null)   begin    select * tblcustomer   end else   begin    select * tblcustomer custid=@custid   end

when executing query id, getting result when passing, not getting result. what's correct way this?

null handled differently other values, need use

if (@custid null)

your current code of if(@custid = null) evaluate false, else case executed regardless of pass @custid. this article goes more detail how handle null values:


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