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SQL Anywhere 11.0.0 » SQL Anywhere Server - SQL Reference » Using SQL » SQL statements » SQL statements (P-Z)

 

SIGNAL statement

Use this statement to signal an exception condition.

Syntax
SIGNAL exception-name
Remarks

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

Use exception-name to specify 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.

Permissions

None.

Side effects

None.

See also
Standards and compatibility
  • SQL/2003   Persistent Stored Module feature.

Example

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

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