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Oracle: All versions FAQ

SQL Scripts

SQL*Plus IF / THEN / EXIT method by nbateman
Posted: 27 Jun 11

The requirement is to be able to exit SQL*Plus depending on a condition tested within the script.

The problem is that the IF/THEN/ELSE construct is for PL*SQL, not SQL*Plus and the SQL*Plus command exit is not allowed. For example, the following does not work:


   IF :returncode != 0 THEN
      exit :returncode;
   END IF;

The simplest solution requires two files to be set up in advance:
1. exit.sql containing the single line "exit &1"
2. continue.sql which will be empty

The following can then be used to either continue the script (when 0 returned) or exit (when 0 NOT returned):


COLUMN returnvalue NEW_VALUE returnvalue
COLUMN action NEW_VALUE action  

SELECT function() AS returnvalue FROM dual;

SELECT decode(&&returnvalue , 0, 'continue', 'exit') AS action FROM dual;

@&&action &&returnvalue


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