PL/SQL - WHILE LOOP Statement

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A WHILE LOOP statement in PL/SQL programming language repeatedly executes a target statement as long as a given condition is true.

Syntax

WHILE condition LOOP 
   sequence_of_statements 
END LOOP; 

Example

DECLARE 
   a number(2) := 10; 
BEGIN 
   WHILE a < 20 LOOP 
      dbms_output.put_line('value of a: ' || a); 
      a := a + 1; 
   END LOOP; 
END; 
/ 

When the above code is executed at the SQL prompt, it produces the following result −

value of a: 10 
value of a: 11 
value of a: 12 
value of a: 13 
value of a: 14 
value of a: 15 
value of a: 16 
value of a: 17 
value of a: 18 
value of a: 19  

PL/SQL procedure successfully completed.