Problem with Developer Express Quantum Grid

snorkel · Post by **snorkel** » Mon 14 Aug 2006 21:52

Hi,
I am using the Devexpress Quantum grid and when I do a query like this:

SHOW COLUMNS FROM user;

the grid totally fails with AVs. I believe it has something to do with the memo types being returned by the SHOW COLUMNS statement.

The grid stops with the AV on the Type column of the SHOW Columns statment. When I do a break it stops in a corelabs method(memdata unit) called GetBlobSize and fails when it tries to get the size.

I am also seeing data corruption from other show commands like show session variables;

Antaeus · Post by **Antaeus** » Wed 16 Aug 2006 10:53

If you are sure that this is MyDAC problem then try to reproduce it within simple application without using any third-paty components like QuantumGrid and send this application to us. Also supply us following information
- Exact version of Delphi, C++ Builder or Kylix
- Exact version of MyDAC. You can see it in About sheet of TMyConnection Editor
- Exact version of MySQL server and MySQL client. You can see it in Info sheet of TMyConnection Editor

Guest · Post by **Guest** » Thu 17 Aug 2006 13:36

Hi,
I have it working now, the problem was I had some how set unidirection to true on the query, when I set that to false the corruption went away.

Thanks,

Snorkel