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I found a lot of answers how to transform rows into columns in SQL. But I need to transforms rows into columns in QSqlTableModel.
As I understand it should not be a very difficult task but I can’t find any idea of how to realize it.
Perhaps data(), setData() and some other methods could be reimplemented, but I am afraid to miss something…
Or, maybe, some methods of QTableView should be reimplemented.
As I understand QIdentityProxyModel could be used to solve this problem.
Unfortunately, QIdentityProxyModel is available since version 4.8.
So I inherited QAbstractProxyModel and implemented mapToSource() and mapFromSource(), rowCount(), columnCount() and few more methods to switch rows with columns.