Devart Forums

I have both Delphi 2009 and 10.3 installed on my computer. I installed dbexpress for SQL server (the demo version to test) which works fine with apps compiled with 10.3

Now, I am finding that when running those applications, I am getting an error when opening some forms related to “Type mismatch for field ‘xxx’, expecting FMTBCDField actual: BCD.

I need to still run 2009 apps, but cannot. How do I fix so I can do so?

SQL Server data types will be matched to TFieldType depending on the data type in your database, driver settings (EnableBCD, BCDPrecision), and Delphi version.
For more information about types mapping, refer to the "Type map" section of the %Program Files%\Devart\dbExpress\SqlServer\Readme.html file.
Where %Program Files% is the path to the installed Devart dbExpress driver for SQL Server on your computer.

Only one version of Devart dbExpress for SQL Server can be installed on a machine using the installer. Yes, you can use an older driver version for some applications. For this purpose, place the library into the directory where the executable file of your application resides. This will allow your OS to load the library and it won't look for the library in system paths.