You can leave a loop in pl/sql by specifying a nice litte label to the loop section. For example: «firstloop»

When labeling, you can exit the loop at any time. In following example, lets give the first loop the label «firstloop» and so on… The third loop contains an exit statement when reaching the value of 2. With this exit the control goes back to the end of the first loop!

Usually an exit without labels would only exit the third loop. The first and second loop would run forward.

With this pl/sql label we can skip all of them!

Here’s the sample pl/sql code: begin dbms_output.put_line('start first loop'); <<firstloop>> for a in 1..3 loop dbms_output.put_line('a=' ||a); <<secondloop>> for b in 1..3 loop dbms_output.put_line(' b=' ||b); <<thirdloop>> for c in 1..3 loop dbms_output.put_line(' c=' ||c); exit firstloop when c=2; end loop thirdloop; end loop secondloop;

end loop firstloop; end;

Result: start first loop a=1 b=1 c=1 c=2

Update on PL/SQL Exit Statement with Labeled Loops in 2024 🔗

Der PL/SQL-Exit-Befehl, der es ermöglicht, eine Schleife zu verlassen, indem ein Label angegeben wird, das diese Schleife umgibt, ist auch im Jahr 2024 noch gültig. Durch die Verwendung von Labels können Entwickler:innen die Kontrolle über den Fluss ihres Codes behalten und spezifischere Ausstiegsbedingungen festlegen.

Im Jahr 2024 können Entwickler:innen nach wie vor ein Label für eine Schleife setzen, um sie bei Bedarf zu verlassen. Zum Beispiel könnte ein Label “firstloop” verwendet werden, um die erste Schleife im Code zu kennzeichnen. Durch das Label kann die Schleife an beliebiger Stelle verlassen werden, was besonders nützlich ist, wenn komplexe Logik oder Sonderfälle berücksichtigt werden müssen.

Ein Beispiel für die Verwendung eines Exit-Statements mit einem Label in PL/SQL könnte wie folgt aussehen:

begin
  dbms_output.put_line('Starte erste Schleife - firstloop');
  <<firstloop>>
  for a in loop
    dbms_output.put_line(a);
    <<secondloop>>
    for b in loop
      dbms_output.put_line(b);
      <<thirdloop>>
      for c in loop
        dbms_output.put_line(c);
        exit firstloop when c = 3;
      end loop thirdloop;
    end loop secondloop;
  end loop firstloop;
end;

In diesem Beispiel zeigt sich die Flexibilität des Exit-Statements mit Labels. Wenn der Wert von c in der dritten Schleife 3 erreicht, wird die Ausführung zur Endung der ersten Schleife zurückgeführt. Ohne das Label wäre ein exit-Statement ohne spezifiziertes Label nur die dritte Schleife verlassen.

Im Jahr 2024 bleibt die Verwendung von Labels in PL/SQL eine bewährte Methode, um die Struktur und Steuerung von Schleifen in komplexen Codeabschnitten zu verbessern. Entwickler:innen können weiterhin von dieser Funktion profitieren, um ihren Code übersichtlicher und effizienter zu gestalten.

In this updated scenario in 2024, the PL/SQL exit statement with labeled loops remains a valid and useful feature for developers working with Oracle databases. The ability to control the flow of loops using labels provides a clear and efficient way to manage complex logic in code. By utilizing labeled loops, developers can maintain a high level of control and readability in their PL/SQL code.

Update 2024: PLSQL Exit Statement with Labeled Loops 🔗

In PLSQL, you can exit an enclosing loop by specifying a label that surrounds the loop. This feature is still valid and useful in 2024, allowing developers to have more control over the flow of their code and set more specific exit conditions.

Using Labels in PLSQL Loops 🔗

To label a loop, you simply give it a name, such as firstloop. This label allows you to exit the loop at any point, providing flexibility when dealing with complex logic or special cases. Without labels, an exit statement would only exit the innermost loop, but with labels, you can skip multiple loops at once.

Here is an example of how to use an exit statement with a labeled loop in PLSQL:

begin
   dbms_output.put_line('Start first loop - firstloop');
   
   firstloop:
   for a in 1..3 loop
      dbms_output.put_line(a);
      
      secondloop:
      for b in 1..3 loop
         dbms_output.put_line(b);
         
         thirdloop:
         for c in 1..3 loop
            dbms_output.put_line(c);
            exit firstloop when c = 2;
         end loop thirdloop;
      end loop secondloop;
   end loop firstloop;
end;

In this example, when the value of c in the third loop reaches 2, the execution will return to the end of the first loop. This demonstrates the power and flexibility of using labels with exit statements in PLSQL loops.

Benefits of Using Labels in PLSQL 🔗

As we look ahead to 2024, the use of labels in PLSQL loops continues to be a valuable method for improving the structure and control of loops in complex code sections. Developers can benefit from this feature to make their code more organized and efficient, leading to better readability and maintainability.

In this updated scenario in 2024, the PLSQL exit statement with labeled loops remains a valid and useful feature for developers working with Oracle databases. The ability to control the flow of loops using labels provides a clear and efficient way to manage complex logic in code. By utilizing labeled loops, developers can maintain a high level of control and readability in their PLSQL code.

Conclusion: Looking Ahead to 2025 🔗

As we move into 2025, the use of labels in PLSQL loops will continue to be an essential tool for developers working with Oracle databases. The ability to exit an enclosing loop with a labeled exit statement provides a flexible and efficient way to manage the flow of code, ensuring better organization and control. From the perspective of 2025, leveraging labeled loops in PLSQL remains a valuable practice for developers striving to write clear, efficient, and maintainable code.