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PL/SQL While Loop

PL/SQL while loop for beginners and professionals with examples on cursors, triggers, functions, procedures, strings, exceptions, arrays, collections, packages, transactions etc.

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PL/SQL While Loop

PL/SQL while loop is used when a set of statements has to be executed as long as a condition is true, the While loop is used. The condition is decided at the beginning of each iteration and continues until the condition becomes false.

Syntax of while loop:

WHILE  
 LOOP statements; 
END LOOP;

Example of PL/SQL While Loop

Let's see a simple example of PL/SQL WHILE loop.

DECLARE
i INTEGER := 1;
BEGIN
WHILE i <= 10 LOOP
DBMS_OUTPUT.PUT_LINE(i);
i := i+1;
END LOOP;
END;

After the execution of the above code, you will get the following result:

1
2
3
4
5
6
7
8
9
10

Note: You must follow these steps while using PL/SQL WHILE Loop.

  • Initialize a variable before the loop body.
  • Increment the variable in the loop.
  • You can use EXIT WHEN statements and EXIT statements in While loop but it is not done often.

PL/SQL WHILE Loop Example 2

DECLARE 
VAR1 NUMBER;
VAR2 NUMBER;
BEGIN 
VAR1:=200;
VAR2:=1;
WHILE (VAR2<=10)
LOOP
DBMS_OUTPUT.PUT_LINE (VAR1*VAR2);
VAR2:=VAR2+1;
END LOOP;
END;

Output:

200
400
600
800
1000
1200
1400
1600
1800
2000
Next TopicPL/SQL FOR Loop




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