http://qt-project.org/doc/qt-4.8/qsqlquery.html#QSqlQuery-2 says the constructor you used executes the query passed to it.
http://qt-project.org/doc/qt-4.8/qsqlquery.html#bindValue says it's meant to be used with prepared queries. So my opinion is that the fact that the code you used in Qt 4 worked is purely a coincidence showing unintended/undocumented behavior. On May 23, 2013 1:31 AM, "Guido Seifert" <warg...@gmx.de> wrote: > > I am wondering. > I have a program, which runs perfectly fine with Qt 4.8. > In dozens of places I do: > QString queryString = "SOME SQL STATEMENT with :foo;"; > QSqlQuery query(queryString, database); > query.bindValue(":foo", xxxxxx); > query.exec(); > > Now I tried to compile the program with Qt 5.1. Compiles fine, > but the database stuff is totally broken. Above value binding > does not seem to work anymore. > > Now I have to do: > QString queryString = "SOME SQL STATEMENT with :foo;"; > QSqlQuery query(database); > query.prepare(queryString); > query.bindValue(":foo", xxxxxx); > query.exec(); > > > Not too difficult to change, but WHY? > > Guido > > > -- > Guido Seifert <warg...@gmx.de> > _______________________________________________ > Interest mailing list > Interest@qt-project.org > http://lists.qt-project.org/mailman/listinfo/interest >
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