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Of course i cannot store sql.Rows() result into ole.IUnknown, since the compiler itself complains about it. I also tried to study from your functions, then again i still have no idea of how did you ...

The technique of configuration software WinCC accessing to exterior database has been studied. Take the coal mine automation system as background, the data in exterior SQL server database has been ...

The technique of configuration software WinCC accessing to exterior database has been studied. Take the coal mine automation system as background, the data in exterior SQL server database has been ...