Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. do i have to delete query object pointer?
Forum Updated to NodeBB v4.3 + New Features

do i have to delete query object pointer?

Scheduled Pinned Locked Moved Solved General and Desktop
16 Posts 2 Posters 1.4k Views 3 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • SGaistS SGaist

    Why do you need to store that query as member variable ?

    U Offline
    U Offline
    user4592357
    wrote on last edited by
    #5

    @sgaist
    well i'm creating and executing the query in a data source class (for table view), then each colomn takes the query from the data source and gets appropriate value from it.

    1 Reply Last reply
    0
    • SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #6

      Then you should rather keep the string of the query and build the QSqlQuery object when you actually need it.

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

      U 1 Reply Last reply
      1
      • SGaistS SGaist

        Then you should rather keep the string of the query and build the QSqlQuery object when you actually need it.

        U Offline
        U Offline
        user4592357
        wrote on last edited by
        #7

        @sgaist
        then how will the columns get the results?

        1 Reply Last reply
        0
        • SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #8

          Can you share the code you are using ?
          It looks like you could make use of a QSqlQueryModel.

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

          U 1 Reply Last reply
          0
          • SGaistS SGaist

            Can you share the code you are using ?
            It looks like you could make use of a QSqlQueryModel.

            U Offline
            U Offline
            user4592357
            wrote on last edited by user4592357
            #9

            @sgaist
            no i'm on mobile now, and soon to sleep. will take a look at it tomorrow and see if i can use it. thanks

            U 1 Reply Last reply
            0
            • U user4592357

              @sgaist
              no i'm on mobile now, and soon to sleep. will take a look at it tomorrow and see if i can use it. thanks

              U Offline
              U Offline
              user4592357
              wrote on last edited by
              #10

              @SGaist
              i took a look at QSqlQueryModel but i guess i can't use it because my table view already has a model.

              1 Reply Last reply
              0
              • SGaistS Offline
                SGaistS Offline
                SGaist
                Lifetime Qt Champion
                wrote on last edited by
                #11

                What kind ?

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

                U 1 Reply Last reply
                0
                • SGaistS SGaist

                  What kind ?

                  U Offline
                  U Offline
                  user4592357
                  wrote on last edited by
                  #12

                  @sgaist
                  it is QAbstractTableModel

                  1 Reply Last reply
                  0
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #13

                    You can replace your model unless you are doing something special with it ?

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

                    U 1 Reply Last reply
                    0
                    • SGaistS SGaist

                      You can replace your model unless you are doing something special with it ?

                      U Offline
                      U Offline
                      user4592357
                      wrote on last edited by
                      #14

                      @sgaist
                      that's the thing. i can't replace it cause it's doing a lot of things (it's part of a library someone has created and I'm using it)

                      1 Reply Last reply
                      0
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #15

                        How are you using it since you need to query a database ?

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

                        U 1 Reply Last reply
                        0
                        • SGaistS SGaist

                          How are you using it since you need to query a database ?

                          U Offline
                          U Offline
                          user4592357
                          wrote on last edited by
                          #16

                          @sgaist
                          it has some long logic built into it, it sets up a lot of connections etc.

                          1 Reply Last reply
                          0

                          • Login

                          • Login or register to search.
                          • First post
                            Last post
                          0
                          • Categories
                          • Recent
                          • Tags
                          • Popular
                          • Users
                          • Groups
                          • Search
                          • Get Qt Extensions
                          • Unsolved