The error “QSqlDatabase: QMYSQL driver not loaded” means that the MySQL database driver is not available or properly configured in your Qt application.
To resolve this issue, you can follow these steps:
Make sure that the MySQL plugin (e.g., qsqlmysql.dll) is present in your application’s directory or in a location where Qt can find it. By default, Qt looks for plugins in the
plugins/sqldriversdirectory relative to your application’s executable.Check if you have correctly included the necessary MySQL library files (e.g., libmysql.dll) required by the MySQL plugin. These files should be accessible and located either in your system’s PATH or in the same directory as your application.
Ensure that you have built Qt with support for MySQL. This requires having the appropriate development libraries for MySQL installed on your system before compiling Qt. Refer to the official documentation of Qt for Windows regarding building and configuring the MySQL plugin.
If you are running a 64-bit version of Qt, ensure that you have both 32-bit and 64-bit versions of the MySQL client libraries available, as both may be needed depending on how your application is compiled.
Verify that you have added
"QT += sql"to your .pro file to include the SQL module in your project.Restart your IDE or build environment to ensure that any changes made to library paths or configurations take effect.
By following these steps, you should be able to resolve the “QSqlDatabase: QMYSQL driver not loaded” error and successfully use the MySQL driver with QSqlDatabase in your Qt application.
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