Execution Flow Control Statements in Oracle

Q

What Are the Execution Flow Control Statements in Oracle?

✍: FYIcenter.com

A

PL/SQL supports three groups of execution control statements:

  • IF Statements - Conditionally executes a block of statements.
  • CASE Statements - Selectively executes a block of statements.
  • LOOP Statements - Repeatedly executes a block of statements.
  • GOTO Statements - Unconditional changes the execution flow to a specified statement.

The script below shows execution control statements:

SQL> set serveroutput on;

SQL> DECLARE                                                    
  2    total NUMBER;                                            
  3  BEGIN                                                      
  4    total := 0;                                              
  5    LOOP                                                     
  6      total := total+1;                                      
  7      IF total >= 10 THEN                                    
  8        GOTO print;                                          
  9      END IF;                                                
 10    END LOOP;                                                
 11    <<print>>                                                
 12    DBMS_OUTPUT.PUT_LINE('Total counts: ' 
 13       || TO_CHAR(total));
 14  END;
 15  /
Total counts: 10

This sample script shows you how to use LOOP, IF, and GOTO statements.

 

Introduction to Oracle PL/SQL

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2016-10-17, 149👍, 0💬