Oracle Sql If Then Else In Select »


21/12/2019 · PL/SQL - IF-THEN-ELSIF Statement - The IF-THEN-ELSIF statement allows you to choose between several alternatives. An IF-THEN statement can be followed by an optional ELSIF.ELSE. If we include the final ELSE, the ELSE clause is executed when the conditions above it all evaluate to false. Each ELSIF clause must have a condition evaluation and a THEN clause. The ELSE clause has no condition evaluation and the THEN key word is omitted. 10/11/2016 · Hello, if you need. SELECT FROM emp WHERE 1=1; and if this retrieves many many rows, well, "so what?", this is what you need. Note that the condition will not be evaluated for each and every row, Oracle will be smart enough to do <