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SIGNAL statement

Use this statement to signal an exception condition.

SIGNAL exception-name

SIGNAL allows you to raise an exception. See Using exception handlers in procedures and triggers for a description of how exceptions are handled.

exception-name    The name of an exception declared using a DECLARE statement at the beginning of the current compound statement. The exception must correspond to a system-defined SQLSTATE or a user-defined SQLSTATE. User-defined SQLSTATE values must be in the range 99000 to 99999.

None.

None.

• RESIGNAL statement
• BEGIN statement
• Using exception handlers in procedures and triggers

• SQL/2003    Persistent Stored Module feature.

The following compound statement declares and signals a user-defined exception. If you execute this example from Interactive SQL, the message appears on the Messages tab.

BEGIN
   DECLARE myexception EXCEPTION
   FOR SQLSTATE '99001';
   SIGNAL myexception;
   EXCEPTION
      WHEN myexception THEN
         MESSAGE 'My exception signaled'
         TO CLIENT;
END