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  4. [solved]qt sql insert statement system not working
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[solved]qt sql insert statement system not working

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  • D Offline
    D Offline
    developer
    wrote on last edited by
    #8

    the result:
    1:the QT += sql is included in the project file
    2:the resut of tqueryresult
    "No query
    Unable to fetch row"

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    • D Offline
      D Offline
      developer
      wrote on last edited by
      #9

      @broadpeak yes the database.open() returns true and also i am able to create table QSqlTableModel is working fine

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      • G Offline
        G Offline
        gayu
        wrote on last edited by
        #10

        Are u using QMYSQL. Are u working in qt4

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        • D Offline
          D Offline
          developer
          wrote on last edited by
          #11

          @gaya i am using QSQlITE yes i am working in qt4

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          • B Offline
            B Offline
            broadpeak
            wrote on last edited by
            #12

            Try this codesnippet:

            @

            void YourClass::init()
            {
            //...
            initDB("../../../db/mydb.db3"); // of course your db path goes here
            //...
            }

            void YourClass::initDB(QString dbPath)
            {
            vc2DB = QSqlDatabase::addDatabase("QSQLITE");
            vc2DB.setDatabaseName(dbPath);
            vc2DB.open();
            QSqlQuery query;
            query.exec("PRAGMA foreign_keys = ON;");
            bool b = query.exec("select id from role where code = 'SU'");
            if (!b) {
            std::cerr << "Failed to open database: " << dbPath.toAscii().data() << std::endl;
            exit(-1);
            }
            }
            @

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            • D Offline
              D Offline
              developer
              wrote on last edited by
              #13

              there is not db path set @broadpeak

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              • G Offline
                G Offline
                gayu
                wrote on last edited by
                #14

                So u've to set the path for db

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                • D Offline
                  D Offline
                  developer
                  wrote on last edited by
                  #15

                  why the table has been created fine.
                  also where to seta good path for ana pplication

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                  • B Offline
                    B Offline
                    broadpeak
                    wrote on last edited by
                    #16

                    [quote author="developer" date="1353499828"]there is not db path set @broadpeak[/quote]

                    What? I don't understand this.

                    But! If the open() function can't open your database, it will open with the given name an another database in QSQLITE! See your databaseS.

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                    • D Offline
                      D Offline
                      developer
                      wrote on last edited by
                      #17

                      it can open the database @broadpeek

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                      • G Offline
                        G Offline
                        gayu
                        wrote on last edited by
                        #18

                        even though the file does not exist, the SQLite will try to create it.

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                        • B Offline
                          B Offline
                          broadpeak
                          wrote on last edited by
                          #19

                          [quote author="developer" date="1353500452"]it can open the database @broadpeek[/quote]

                          Anyway, can you run (from your code) a simple SELECT on your database? Have you got a resultset?
                          Have you grant at all for your tables?

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                          • D Offline
                            D Offline
                            developer
                            wrote on last edited by
                            #20

                            ohhhhhhhhhh acutally its working with setting url a different databse opens and with just typing passwordmanager as databse name it works actaully the problem is with the table view thanks all problem solved i tried select staement and i got the result

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                            • D Offline
                              D Offline
                              developer
                              wrote on last edited by
                              #21

                              it also works after selecting select() thanks all

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                              • B Offline
                                B Offline
                                broadpeak
                                wrote on last edited by
                                #22

                                Ok, set your thread to [solved] :)

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