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Error QMYSQL Plugin on Windows

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  • S Offline
    S Offline
    Stelian
    wrote on last edited by Stelian
    #25

    Meanwhile, I added c:\Qt\Qt5.12.1\Tools\mingw730_64\bin\mingw32-make in PATH environment variable in the System Properties and restart the computer and I've run again

    c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake -- MYSQL_INCDIR="C:/Program Files/MySQL/MySQL Server 8.0/include" MYSQL_LIBDIR="C:Program Files/MYSQL/MySQL Server 8.0/lib"

    c:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers>c:\Qt\Qt5.12.1\Tools\mingw730_64\bin\mingw32-make

    and I get ...

    cd sqlite\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\sqlite\sqlite.pro ) && c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile
    mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
    c:/Qt/Qt5.12.1/Tools/mingw730_64/bin/mingw32-make -f Makefile.Release all
    mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
    g++ -c -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\qsql_sqlite.o qsql_sqlite.cpp
    g++ -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -dM -E -o .moc\release\moc_predefs.h C:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\features\data\dummy.cpp
    C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB --include C:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite/.moc/release/moc_predefs.h -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/mkspecs/win32-g++ -IC:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite -IC:/Qt/Qt5.12.1/Sources/qtbase/src/3rdparty/sqlite -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1/QtCore -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++ -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32 -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/backward -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include-fixed -IC:/Qt/Qt5.12.1/Tools/mingw730_64/x86_64-w64-mingw32/include smain.cpp -o .moc\release\smain.moc
    g++ -c -fno-keep-inline-dllexport -O2 -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\smain.o smain.cpp
    gcc -c -fno-keep-inline-dllexport -O2 -std=gnu11 -fno-exceptions -Wall -W -Wextra -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DNDEBUG -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\release -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\release\sqlite3.o C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3ThreadJoin':
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:29362:8: warning: variable 'bRc' set but not used [-Wunused-but-set-variable]
       BOOL bRc;
            ^~~
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'winUnfetch':
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:44948:45: warning: unused parameter 'iOff' [-Wunused-parameter]
     static int winUnfetch(sqlite3_file *fd, i64 iOff, void *p){
                                                 ^~~~
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3_db_status':
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:20744:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
           op = SQLITE_DBSTATUS_CACHE_WRITE+1;
           ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:20746:5: note: here
         case SQLITE_DBSTATUS_CACHE_HIT:
         ^~~~
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c: In function 'sqlite3_str_vappendf':
    C:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite\sqlite3.c:27452:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
             flag_long = sizeof(char*)==sizeof(i64) ? 2 :
             ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                          sizeof(char*)==sizeof(long int) ? 1 : 0;
    ...
    ...
    ...
    C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB --include C:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite/.moc/debug/moc_predefs.h -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/mkspecs/win32-g++ -IC:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite -IC:/Qt/Qt5.12.1/Sources/qtbase/src/3rdparty/sqlite -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql/5.12.1/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1 -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore/5.12.1/QtCore -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtSql -IC:/Qt/Qt5.12.1/5.12.1/mingw73_64/include/QtCore -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++ -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/x86_64-w64-mingw32 -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/c++/backward -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include -IC:/Qt/Qt5.12.1/Tools/mingw730_64/lib/gcc/x86_64-w64-mingw32/7.3.0/include-fixed -IC:/Qt/Qt5.12.1/Tools/mingw730_64/x86_64-w64-mingw32/include qsql_sqlite_p.h -o .moc\debug\moc_qsql_sqlite_p.cpp
    g++ -c -fno-keep-inline-dllexport -g -Og -std=c++1z -fno-exceptions -Wall -W -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB -I. -IC:\Qt\Qt5.12.1\Sources\qtbase\src\3rdparty\sqlite -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql\5.12.1\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1 -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore\5.12.1\QtCore -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtSql -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\include\QtCore -I.moc\debug -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.6.11-winx64\include -IC:\Utils\postgresql\pgsql\include -IC:\Qt\Qt5.12.1\5.12.1\mingw73_64\mkspecs\win32-g++  -o .obj\debug\moc_qsql_sqlite_p.o .moc\debug\moc_qsql_sqlite_p.cpp
    windres -i qsqlited_resource.rc -o .obj\debug\qsqlited_resource_res.o --include-dir=. -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DSQLITE_ENABLE_COLUMN_METADATA -DSQLITE_OMIT_LOAD_EXTENSION -DSQLITE_OMIT_COMPLETE -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS5 -DSQLITE_ENABLE_RTREE -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_CAST_TO_ASCII -DQT_NO_CAST_FROM_ASCII -DQT_NO_EXCEPTIONS -DQT_PLUGIN -DQT_SQL_LIB -DQT_CORE_LIB
    g++ -shared -Wl,-subsystem,windows -Wl,--out-implib,C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\plugins\sqldrivers\libqsqlited.a -o ..\plugins\sqldrivers\qsqlited.dll .obj/debug/qsql_sqlite.o .obj/debug/smain.o .obj/debug/sqlite3.o .obj/debug/moc_qsql_sqlite_p.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.6.11-winx64\lib -LC:\Utils\postgresql\pgsql\lib -LC:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\libQt5Sqld.a C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\libQt5Cored.a .obj\debug\qsqlited_resource_res.o
    mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
    mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
    
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    0
    • S Offline
      S Offline
      Stelian
      wrote on last edited by
      #26

      When I've run a simple program

      #include <QCoreApplication>
      #include <QtSql>
      #include <QSqlDatabase>
      #include <QtDebug>
      
      int main(int argc, char *argv[])
      {
          QCoreApplication a(argc, argv);
      
          QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
          db.setHostName("localhost");
          db.setUserName("root");
          db.setPassword("DSa81&l12&z26");
          db.setDatabaseName("Employee_management");
      
          if (db.open())
          {
              qDebug() << "Database connected successfuly!";
          }
          else
          {
              qDebug() << "Database is not connected!";
          }
      
          return a.exec();
      }
      

      I receive the message "Database is not connected!", which means there are still some blurring about the QMYSQL driver.

      1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #27

        Did you call mingw32-make install after the build succeeded ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        1 Reply Last reply
        1
        • S Offline
          S Offline
          Stelian
          wrote on last edited by Stelian
          #28

          Yes, and I received the next message

          cd odbc\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\odbc\odbc.pro ) && mingw32-make -f Makefile install
          mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          mingw32-make -f Makefile.Release install
          mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          copy /y ..\plugins\sqldrivers\qsqlodbc.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlodbc.dll
                  1 file(s) copied.
          C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake
          mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          mingw32-make -f Makefile.Debug install
          mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          copy /y ..\plugins\sqldrivers\qsqlodbcd.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlodbcd.dll
                  1 file(s) copied.
          C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QODBCDriverPlugin.cmake
          mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/odbc'
          cd sqlite\ && ( if not exist Makefile C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -o Makefile C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\sqlite\sqlite.pro ) && mingw32-make -f Makefile install
          mingw32-make[1]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          mingw32-make -f Makefile.Release install
          mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          copy /y ..\plugins\sqldrivers\qsqlite.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlite.dll
                  1 file(s) copied.
          C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake
          mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          mingw32-make -f Makefile.Debug install
          mingw32-make[2]: Entering directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          copy /y ..\plugins\sqldrivers\qsqlited.dll C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlited.dll
                  1 file(s) copied.
          C:\Qt\Qt5.12.1\5.12.1\mingw73_64\bin\qmake.exe -install qinstall C:\Qt\Qt5.12.1\Sources\qtbase\src\plugins\sqldrivers\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake C:\Qt\Qt5.12.1\5.12.1\mingw73_64\lib\cmake\Qt5Sql\Qt5Sql_QSQLiteDriverPlugin.cmake
          mingw32-make[2]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          mingw32-make[1]: Leaving directory 'c:/Qt/Qt5.12.1/Sources/qtbase/src/plugins/sqldrivers/sqlite'
          

          Part of this message is in my previous post

          1 Reply Last reply
          0
          • S Offline
            S Offline
            Stelian
            wrote on last edited by Stelian
            #29

            When I run the code

            QSqlDatabase: QMYSQL driver not loaded
            QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
            Database is Not Connected!
            
            1 Reply Last reply
            0
            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #30

              In Qt Creator's Run part of the Project panel, did you add the path to the MySQL dlls in the PATH environment variable ?

              Interested in AI ? www.idiap.ch
              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

              S 1 Reply Last reply
              0
              • SGaistS SGaist

                In Qt Creator's Run part of the Project panel, did you add the path to the MySQL dlls in the PATH environment variable ?

                S Offline
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                Stelian
                wrote on last edited by
                #31

                @SGaist Let me understand.
                First of all, do you mean I have to add that path "C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" or this path "C:\Program Files\MySQL\MySQL Server 8.0\lib"
                Second of all, where do I have to add ? (see picture1 and picture2) ?0_1551348026672_Picture1.jpg
                0_1551348044412_Picture2.jpg

                jsulmJ 1 Reply Last reply
                0
                • S Stelian

                  @SGaist Let me understand.
                  First of all, do you mean I have to add that path "C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" or this path "C:\Program Files\MySQL\MySQL Server 8.0\lib"
                  Second of all, where do I have to add ? (see picture1 and picture2) ?0_1551348026672_Picture1.jpg
                  0_1551348044412_Picture2.jpg

                  jsulmJ Offline
                  jsulmJ Offline
                  jsulm
                  Lifetime Qt Champion
                  wrote on last edited by
                  #32

                  @Stelian As @SGaist wrote: in QtCreator Run settings.
                  I think you need the MySQL connector libs (but you can simply put both).

                  https://forum.qt.io/topic/113070/qt-code-of-conduct

                  S 1 Reply Last reply
                  1
                  • jsulmJ jsulm

                    @Stelian As @SGaist wrote: in QtCreator Run settings.
                    I think you need the MySQL connector libs (but you can simply put both).

                    S Offline
                    S Offline
                    Stelian
                    wrote on last edited by
                    #33

                    @jsulm Where do I have to add in the first picture or second ?

                    jsulmJ 1 Reply Last reply
                    0
                    • S Stelian

                      @jsulm Where do I have to add in the first picture or second ?

                      jsulmJ Offline
                      jsulmJ Offline
                      jsulm
                      Lifetime Qt Champion
                      wrote on last edited by
                      #34

                      @Stelian In the second of course as it is showing exactly what was suggested: Run settings in QtCreator.

                      https://forum.qt.io/topic/113070/qt-code-of-conduct

                      S 1 Reply Last reply
                      0
                      • jsulmJ jsulm

                        @Stelian In the second of course as it is showing exactly what was suggested: Run settings in QtCreator.

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                        Stelian
                        wrote on last edited by Stelian
                        #35

                        @jsulm I,ve added both C:\Program Files (x86)\MySQL\MySQL Connector C 6.1\lib" and this path "C:\Program Files\MySQL\MySQL Server 8.0\lib in Run Settings -> Run Environment -> Path, then restart Qt and run the code, Not connected.

                        1 Reply Last reply
                        0
                        • SGaistS Offline
                          SGaistS Offline
                          SGaist
                          Lifetime Qt Champion
                          wrote on last edited by
                          #36

                          Then again, start your application with the QT_DEBUG_PLUGINS environment variable to see what is happening.

                          Interested in AI ? www.idiap.ch
                          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                          S 1 Reply Last reply
                          1
                          • SGaistS SGaist

                            Then again, start your application with the QT_DEBUG_PLUGINS environment variable to see what is happening.

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                            Stelian
                            wrote on last edited by Stelian
                            #37

                            @SGaist

                            QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers" ...
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QSQLITE"
                                    ]
                                },
                                "archreq": 0,
                                "className": "QSQLiteDriverPlugin",
                                "debug": false,
                                "version": 330752
                            }
                            
                            
                            "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                     not a plugin
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QSQLITE"
                                    ]
                                },
                                "archreq": 1,
                                "className": "QSQLiteDriverPlugin",
                                "debug": true,
                                "version": 330752
                            }
                            
                            
                            Got keys from plugin meta data ("QSQLITE")
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QMYSQL3",
                                        "QMYSQL"
                                    ]
                                },
                                "archreq": 0,
                                "className": "QMYSQLDriverPlugin",
                                "debug": false,
                                "version": 330752
                            }
                            
                            
                            "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                     not a plugin
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QMYSQL3",
                                        "QMYSQL"
                                    ]
                                },
                                "archreq": 1,
                                "className": "QMYSQLDriverPlugin",
                                "debug": true,
                                "version": 330752
                            }
                            
                            
                            Got keys from plugin meta data ("QMYSQL3", "QMYSQL")
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QODBC3",
                                        "QODBC"
                                    ]
                                },
                                "archreq": 0,
                                "className": "QODBCDriverPlugin",
                                "debug": false,
                                "version": 330752
                            }
                            
                            
                            "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                     not a plugin
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QODBC3",
                                        "QODBC"
                                    ]
                                },
                                "archreq": 1,
                                "className": "QODBCDriverPlugin",
                                "debug": true,
                                "version": 330752
                            }
                            
                            
                            Got keys from plugin meta data ("QODBC3", "QODBC")
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QPSQL7",
                                        "QPSQL"
                                    ]
                                },
                                "archreq": 0,
                                "className": "QPSQLDriverPlugin",
                                "debug": false,
                                "version": 330752
                            }
                            
                            
                            "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                     not a plugin
                            QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll"
                            Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll, metadata=
                            {
                                "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                "MetaData": {
                                    "Keys": [
                                        "QPSQL7",
                                        "QPSQL"
                                    ]
                                },
                                "archreq": 1,
                                "className": "QPSQLDriverPlugin",
                                "debug": true,
                                "version": 330752
                            }
                            
                            
                            Got keys from plugin meta data ("QPSQL7", "QPSQL")
                            QFactoryLoader::QFactoryLoader() checking directory path "E:/Qt Creator/build-sql_console_test-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/debug/sqldrivers" ...
                            Cannot load library C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll: The specified module could not be found.
                            QLibraryPrivate::loadPlugin failed on "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll" : "Cannot load library C:\\Qt\\Qt5.12.1\\5.12.1\\mingw73_64\\plugins\\sqldrivers\\qsqlmysqld.dll: The specified module could not be found."
                            QSqlDatabase: QMYSQL driver not loaded
                            QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
                            Database is Not Connected!
                            
                            1 Reply Last reply
                            0
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #38

                              Looks like you only built the plugin for release and not for debug and you are running a debug build of your application.

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              S 2 Replies Last reply
                              2
                              • SGaistS SGaist

                                Looks like you only built the plugin for release and not for debug and you are running a debug build of your application.

                                S Offline
                                S Offline
                                Stelian
                                wrote on last edited by
                                #39

                                @SGaist I do not know if I built the plugin for release and not for debug, but if you say that I did, ok, you are the champion.
                                Tell me what I have to do next.

                                1 Reply Last reply
                                0
                                • SGaistS SGaist

                                  Looks like you only built the plugin for release and not for debug and you are running a debug build of your application.

                                  S Offline
                                  S Offline
                                  Stelian
                                  wrote on last edited by
                                  #40

                                  @SGaist Believe me, I don't know how to build a plugin in release mode or in debug mode, to my shame.
                                  If I did that, I did it unconsciously.

                                  1 Reply Last reply
                                  0
                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #41

                                    Add -debug to the qmake call

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    S 1 Reply Last reply
                                    0
                                    • SGaistS SGaist

                                      Add -debug to the qmake call

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                                      S Offline
                                      Stelian
                                      wrote on last edited by Stelian
                                      #42

                                      @SGaist I've called the qmake in debug mode, run the code and again Database is Not Connected!
                                      Then again, I have start the application with the QT_DEBUG_PLUGINS environment variable and I get the next message

                                      QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers" ...
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QSQLITE"
                                              ]
                                          },
                                          "archreq": 0,
                                          "className": "QSQLiteDriverPlugin",
                                          "debug": false,
                                          "version": 330752
                                      }
                                      
                                      
                                      "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                               not a plugin
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QSQLITE"
                                              ]
                                          },
                                          "archreq": 1,
                                          "className": "QSQLiteDriverPlugin",
                                          "debug": true,
                                          "version": 330752
                                      }
                                      
                                      
                                      Got keys from plugin meta data ("QSQLITE")
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QMYSQL3",
                                                  "QMYSQL"
                                              ]
                                          },
                                          "archreq": 0,
                                          "className": "QMYSQLDriverPlugin",
                                          "debug": false,
                                          "version": 330752
                                      }
                                      
                                      
                                      "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                               not a plugin
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QMYSQL3",
                                                  "QMYSQL"
                                              ]
                                          },
                                          "archreq": 1,
                                          "className": "QMYSQLDriverPlugin",
                                          "debug": true,
                                          "version": 330752
                                      }
                                      
                                      
                                      Got keys from plugin meta data ("QMYSQL3", "QMYSQL")
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QODBC3",
                                                  "QODBC"
                                              ]
                                          },
                                          "archreq": 0,
                                          "className": "QODBCDriverPlugin",
                                          "debug": false,
                                          "version": 330752
                                      }
                                      
                                      
                                      "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                               not a plugin
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QODBC3",
                                                  "QODBC"
                                              ]
                                          },
                                          "archreq": 1,
                                          "className": "QODBCDriverPlugin",
                                          "debug": true,
                                          "version": 330752
                                      }
                                      
                                      
                                      Got keys from plugin meta data ("QODBC3", "QODBC")
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QPSQL7",
                                                  "QPSQL"
                                              ]
                                          },
                                          "archreq": 0,
                                          "className": "QPSQLDriverPlugin",
                                          "debug": false,
                                          "version": 330752
                                      }
                                      
                                      
                                      "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                               not a plugin
                                      QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll"
                                      Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll, metadata=
                                      {
                                          "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                          "MetaData": {
                                              "Keys": [
                                                  "QPSQL7",
                                                  "QPSQL"
                                              ]
                                          },
                                          "archreq": 1,
                                          "className": "QPSQLDriverPlugin",
                                          "debug": true,
                                          "version": 330752
                                      }
                                      
                                      Got keys from plugin meta data ("QPSQL7", "QPSQL")
                                      QFactoryLoader::QFactoryLoader() checking directory path "E:/Qt Creator/build-sql_console_test-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/debug/sqldrivers" ...
                                      Cannot load library C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll: The specified module could not be found.
                                      QLibraryPrivate::loadPlugin failed on "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll" : "Cannot load library C:\\Qt\\Qt5.12.1\\5.12.1\\mingw73_64\\plugins\\sqldrivers\\qsqlmysqld.dll: The specified module could not be found."
                                      QSqlDatabase: QMYSQL driver not loaded
                                      QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
                                      Database is Not Connected!
                                      
                                      JonBJ 1 Reply Last reply
                                      0
                                      • S Stelian

                                        @SGaist I've called the qmake in debug mode, run the code and again Database is Not Connected!
                                        Then again, I have start the application with the QT_DEBUG_PLUGINS environment variable and I get the next message

                                        QFactoryLoader::QFactoryLoader() checking directory path "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers" ...
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QSQLITE"
                                                ]
                                            },
                                            "archreq": 0,
                                            "className": "QSQLiteDriverPlugin",
                                            "debug": false,
                                            "version": 330752
                                        }
                                        
                                        
                                        "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlite.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                                 not a plugin
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlited.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QSQLITE"
                                                ]
                                            },
                                            "archreq": 1,
                                            "className": "QSQLiteDriverPlugin",
                                            "debug": true,
                                            "version": 330752
                                        }
                                        
                                        
                                        Got keys from plugin meta data ("QSQLITE")
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QMYSQL3",
                                                    "QMYSQL"
                                                ]
                                            },
                                            "archreq": 0,
                                            "className": "QMYSQLDriverPlugin",
                                            "debug": false,
                                            "version": 330752
                                        }
                                        
                                        
                                        "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                                 not a plugin
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QMYSQL3",
                                                    "QMYSQL"
                                                ]
                                            },
                                            "archreq": 1,
                                            "className": "QMYSQLDriverPlugin",
                                            "debug": true,
                                            "version": 330752
                                        }
                                        
                                        
                                        Got keys from plugin meta data ("QMYSQL3", "QMYSQL")
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QODBC3",
                                                    "QODBC"
                                                ]
                                            },
                                            "archreq": 0,
                                            "className": "QODBCDriverPlugin",
                                            "debug": false,
                                            "version": 330752
                                        }
                                        
                                        
                                        "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbc.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                                 not a plugin
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlodbcd.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QODBC3",
                                                    "QODBC"
                                                ]
                                            },
                                            "archreq": 1,
                                            "className": "QODBCDriverPlugin",
                                            "debug": true,
                                            "version": 330752
                                        }
                                        
                                        
                                        Got keys from plugin meta data ("QODBC3", "QODBC")
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QPSQL7",
                                                    "QPSQL"
                                                ]
                                            },
                                            "archreq": 0,
                                            "className": "QPSQLDriverPlugin",
                                            "debug": false,
                                            "version": 330752
                                        }
                                        
                                        
                                        "The plugin 'C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsql.dll' uses incompatible Qt library. (Cannot mix debug and release libraries.)"
                                                 not a plugin
                                        QFactoryLoader::QFactoryLoader() looking at "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll"
                                        Found metadata in lib C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlpsqld.dll, metadata=
                                        {
                                            "IID": "org.qt-project.Qt.QSqlDriverFactoryInterface",
                                            "MetaData": {
                                                "Keys": [
                                                    "QPSQL7",
                                                    "QPSQL"
                                                ]
                                            },
                                            "archreq": 1,
                                            "className": "QPSQLDriverPlugin",
                                            "debug": true,
                                            "version": 330752
                                        }
                                        
                                        Got keys from plugin meta data ("QPSQL7", "QPSQL")
                                        QFactoryLoader::QFactoryLoader() checking directory path "E:/Qt Creator/build-sql_console_test-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/debug/sqldrivers" ...
                                        Cannot load library C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll: The specified module could not be found.
                                        QLibraryPrivate::loadPlugin failed on "C:/Qt/Qt5.12.1/5.12.1/mingw73_64/plugins/sqldrivers/qsqlmysqld.dll" : "Cannot load library C:\\Qt\\Qt5.12.1\\5.12.1\\mingw73_64\\plugins\\sqldrivers\\qsqlmysqld.dll: The specified module could not be found."
                                        QSqlDatabase: QMYSQL driver not loaded
                                        QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
                                        Database is Not Connected!
                                        
                                        JonBJ Offline
                                        JonBJ Offline
                                        JonB
                                        wrote on last edited by JonB
                                        #43

                                        @Stelian

                                        Cannot load library C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll: The specified module could not be found.

                                        Does the exact file specified by that path actually exist, or not? (Note that the file mentioned, qsqlmysqld.dll, has a d just before the ., presumably indicating it's a debug build; this is not the same as if it were qsqlmysql.dll.)

                                        S 1 Reply Last reply
                                        1
                                        • JonBJ JonB

                                          @Stelian

                                          Cannot load library C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll: The specified module could not be found.

                                          Does the exact file specified by that path actually exist, or not? (Note that the file mentioned, qsqlmysqld.dll, has a d just before the ., presumably indicating it's a debug build; this is not the same as if it were qsqlmysql.dll.)

                                          S Offline
                                          S Offline
                                          Stelian
                                          wrote on last edited by
                                          #44

                                          @JonB Thank you for reply!
                                          I apologize for answering late, but that file is right in that location:

                                          C:\Qt\Qt5.12.1\5.12.1\mingw73_64\plugins\sqldrivers\qsqlmysqld.dll
                                          

                                          See the print 0_1551538547607_Annotation 2019-03-02 165509.jpg screen.

                                          1 Reply Last reply
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