-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Leigh wrote: > Gleb Paharenko wrote: > >> Hello. >> >> There was a question about exceptions recently. The answer might be >> helpful: >> http://lists.mysql.com/mysql/188048 >> >> >> >> Leigh <[EMAIL PROTECTED]> wrote: >> >>> Hi All, >>> >>> I'm currently working on porting a database form Informix 9.2 to MySQL 5 >>> in order to determine the suitability of MySQL for our application. At >>> the moment, I'm stuck with one of our stored procs that contains the >>> following lines: >>> >>> -- If duplicates are detected, raise an error >>> IF count > 1 THEN >>> RAISE EXCEPTION -746, 0, 'Duplicate mapping: code "' || p_code || >>> '", cust "' || p_cust_code || '"'; >>> END IF; >>> >>> Under Informix, this IF statement raises a user defined JDBC Exception >>> (the code "-746" is for user defined errors). Is there any way of doing >>> a similar thing in MySQL? >>> >>> If you need any more information, I'm happy to provide it. Thanks in >>> advance! >>> Regards, >>> Leigh >>> >> > > Hi, > > Thanks for that bit of info. This may be a stupid question, but how > exactly does setting the variable @err help me with my current > situation? Will this allow me to generate a JDBC Exception or is it > something I'll need to change in the code to check if an error code has > been set? Thanks again! > > Leigh >
Leigh, It looks like the other poster's example just ends up setting the error variable, _not_ creating a custom error. MySQL does not yet have a RAISERROR implementation, so to create an exception, you usually have to do something that is erroneous, but that has no side effects and then parsing the error message from the resultant SQLException (like dropping a non-existent table): DROP TABLE error.`error #nnnn` (note, this example is from http://dev.mysql.com/tech-resources/articles/mysql-storedprocedures.pdf which is worth a read if you're starting out with MySQL stored procedures). -Mark - -- Mark Matthews MySQL AB, Software Development Manager - Connectivity www.mysql.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFDDcKltvXNTca6JD8RArB+AJoDQSYUlF5yCyz+1sc4X1YVudXQxACgi7Et 6bEs9HNLBRPzj8MgJu4dpfE= =HSwc -----END PGP SIGNATURE----- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
