Use IF THEN ELSE IF : IF « PL SQL Statements « Oracle PL/SQL Tutorial





SQL>
SQL> SET SERVEROUTPUT ON
SQL> SET ECHO ON
SQL> DECLARE
  2    employee_name_c CHAR(32);
  3    employee_name_v VARCHAR2(32);
  4  BEGIN
  5    --Assign the same value to each string.
  6    employee_name_c := 'CHAR';
  7    employee_name_v := 'VARCHAR';
  8
  9    --Test the strings for equality.
 10    IF employee_name_c = employee_name_v THEN
 11      DBMS_OUTPUT.PUT_LINE('The names are the same');
 12    ELSE
 13      DBMS_OUTPUT.PUT_LINE('The names are NOT the same');
 14    END IF;
 15  END;
 16  /
The names are NOT the same

PL/SQL procedure successfully completed.

SQL>
SQL>










22.1.IF
22.1.1.Conditional Logic
22.1.2.Handling conditions
22.1.3.A Simple Condition Statement
22.1.4.A Simple Condition Statement with BOOLEAN variable
22.1.5.The IF...THEN...ELSE Statement
22.1.6.Use IF THEN ELSE IF
22.1.7.IF...ELSE statements
22.1.8.Using an ELSIF Statement
22.1.9.IF..ELSIF ladder
22.1.10.Block IF statement
22.1.11.IF with ELSE
22.1.12.The Syntax for IF...ELSIF
22.1.13.ELSIF Ladder
22.1.14.The Syntax for Nested IF Statements
22.1.15.Use if with 'IN'
22.1.16.Three valued comparison
22.1.17.JUMP out of a IF statement with goto
22.1.18.Comparing with NULL
22.1.19.If block statement
22.1.20.Create a function and call it in an if statement
22.1.21.PLW-06002: Unreachable code