PL/SQL GOTO Statement
In PL/SQL, GOTO statement makes you able to get an unconditional jump from the GOTO to a specific executable statement label in the same subprogram of the PL/SQL block.
Here the label declaration which contains the label_name encapsulated within the << >> symbol and must be followed by at least one statement to execute.
Syntax:
GOTO label_name;
Here the label declaration which contains the label_name encapsulated within the << >> symbol and must be followed by at least one statement to execute.
GOTO label_name;
Statement;
Example of PL/SQL GOTO statement
Let's take an example of PL/SQL GOTO statement.
DECLARE
a number(2) := 30;
BEGIN
-- while loop execution
WHILE a < 50 LOOP
dbms_output.put_line ('value of a: ' || a);
a := a + 1;
IF a = 35 THEN
a := a + 1;
GOTO loopstart;
END IF;
END LOOP;
After the execution of above code, you will get the following result:
value of a: 30
value of a: 31
value of a: 32
value of a: 33
value of a: 34
value of a: 36
value of a: 37
value of a: 38
value of a: 39
value of a: 40
value of a: 41
value of a: 42
value of a: 43
value of a: 44
value of a: 45
value of a: 46
value of a: 47
value of a: 48
value of a: 49
Statement processed.
Restriction on GOTO statement
Following is a list of some restrictions imposed on GOTO statement.
Cannot transfer control into an IF statement, CASE statement, LOOP statement or sub-block.
Cannot transfer control from one IF statement clause to another or from one CASE statement WHEN clause to another.
Cannot transfer control from an outer block into a sub-block.
Cannot transfer control out of a subprogram.
Cannot transfer control into an exception handler.
Next TopicPL/SQL Procedure
