Help Center/ GaussDB/ Developer Guide(Centralized_2.x)/ Stored Procedure/ Control Statements/ NULL Statements
Updated on 2023-10-23 GMT+08:00
View PDF
Share

NULL Statements

In PL/SQL programs, NULL statements are used to indicate "nothing should be done", equal to placeholders. They grant meanings to some statements and improve program readability.

Syntax

The following shows example use of NULL statements.

1
2
3
4
5
6
7
8
9
 
DECLARE
    ...
BEGIN
    ...
    IF v_num IS NULL THEN
        NULL; --No data needs to be processed.
    END IF;
END;
/
Parent topic: Control Statements