Comments from the qt5 commit on git: " QSqlResult: replace virtual hooks with virtual functions
Instead of virtual functions which would have broken binary compatibility, virtual_hook() was used to implement the virtual functionality. Now, since the step to Qt 5.0 allows breaking binary compatibility, we take the opporunity to simplify the code using real virtual functions.
SetNumericalPrecision --> setNumericalPrecisionPolicy()
NextResult --> nextResult()
DetachFromResultSet --> detachFromResultSet()
BatchOperation --> execBatch() "