Devart Forums

Hi,

my application runs long time with no problems under MyDac up to 3.30 , MySQL 4.0.*. and Delphi 7
Since the update to mysql 4.1.7 and MyDac 3.30.*, massive problems occur. I get some Debugger-Exceptions:

'EAssertionFailed: Unknown MySQL datatype (32) (D:\Projects\Delphi\MyDac\Source\MyClasses.pas, Line 870)'.

The shows path dosen´t exist: D:\Projects\Delphi\MyDac\Source\MyClasses.pas

The errors occurs irregular, sometimes at very simple SQL-Statements.
select * from anytable

The statements run fine in mysqlcc or mysql query browser.

I´ve uninstall and reinstall all mydac and mysql-products with no change.
Did you have any suggestions?

Bye
Harald

This error might happen if MySQL server returns unknown type of the field. But there is no description of type with code 32 in mysql_com.h .

Probably, on update from MySQL 4.0 to 4.1 some tables with data were damaged. Try to make a check of these tables.

I´ve update Delphi 7.0 to 7.1, and reinstall all secondary components, like Quickreport, Teechart, MyDac etc.

Now the application seems to works stable. (I don´t check or repair the tables).

Is thes update necessary, or was it a damaged installation?

Not, this update isn't necessary.