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IF-THEN-ELSE Statement

IF-THEN

DECLARE
v_num1 NUMBER(10);
v_num2 NUMBER(10);

BEGIN
  v_num1 := 2;
  v_num2 := 1;
  
  IF v_num1 > v_num2 THEN
     dbms_output.put_line('v_num1 is bigger than v_num2');
  END IF;
END;

IF-THEN-ELSE

DECLARE
v_num1 NUMBER(10);
v_num2 NUMBER(10);

BEGIN
  v_num1 := 2;
  v_num2 := 10;
  
  IF v_num1 > v_num2 THEN
     dbms_output.put_line('v_num1 is bigger than v_num2');
  ELSE
    dbms_output.put_line('v_num1 is NOT bigger than v_num2');
  END IF;
END;

IF-THEN-ELSIF-ELSE

DECLARE
v_num1 NUMBER(10);
v_num2 NUMBER(10);

BEGIN
  v_num1 := 2;
  v_num2 := 2;
  
  IF v_num1 > v_num2 THEN
     dbms_output.put_line('v_num1 is bigger than v_num2');
  ELSIF v_num1 < v_num2 THEN
    dbms_output.put_line('v_num1 is NOT bigger than v_num2');
  ELSE
    dbms_output.put_line('v_num1 is EQUAL to v_num2');
  END IF;
END;

Syntax:

IF [condition 1] THEN
[statements to execute when condition 1 is TRUE];
ELSIF [condition 2] THEN
[statements to execute when condition 2 is TRUE];
ELSE
[statements to execute when both condition 1 & condition 2 are FALSE];
END IF;

Contributors

Topic Id: 5871

Example Ids: 20649,20650,20651

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