The datatype 'bit' in MySQL is not supported in Qt

In MySQL database, the 'bit' datatype is not supported. QSqlquery.value() return a QVariant which is an empty string.I check QT 's source code,find it is not supported.

At (src\sql\drivers\mysql\qsql_mysql.cpp : function qDecodeMYSQLType () ): the default case of the type switch return an empty string.

I hope qt will support the 'bit' datatype and return a bool variant ,otherwise please return a invalid QVariant, not an empty string which always true by call the toBool() function.