Fixed MySql CAST operation http://dev.mysql.com/doc/refman/5.7/en/cast-functions.html#function_cast
Fixed MySql CAST operation http://dev.mysql.com/doc/refman/5.7/en/cast-functions.html#function_cast

Previous behaviour: DataType.Int64 were built to default BIGINT which leads to error on sql side:
'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'BIGINT) ='

Fixed: DataType.Int32, Int64, Int32 -> 'Signed', UInt16, UInt32, UInt64 -> 'Unsigned'

sdanyliv/linq2db,sdanyliv/linq2db,lvaleriu/linq2db,genusP/linq2db,ronnyek/linq2db,genusP/linq2db,LinqToDB4iSeries/linq2db,rechkalov/linq2db,jogibear9988/linq2db,MaceWindu/linq2db,AK107/linq2db,linq2db/linq2db,AK107/linq2db,linq2db/linq2db,giuliohome/linq2db,jogibear9988/linq2db,enginekit/linq2db,MaceWindu/linq2db,LinqToDB4iSeries/linq2db,lvaleriu/linq2db,inickvel/linq2db