use qpsql

[jacek]

Why do i get my exe file under the debug folder and not under the release folder?And what is the diference?

Under windows, qmake creates two Makefiles: Makefile.Release and Makefile.Debug. The latter is the default one and it compiles application with debugging symbols. To compile your application in "release" mode (i.e. optimized and without debugging information), you must run "make -f Makefile.Release".

You can switch that feature off by adding:

CONFIG -= debug_and_release
CONFIG += release # or debug

CONFIG -= debug_and_release
CONFIG += release # or debug

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to your .pro file.