ms sql server transact sql docs
- CONTENTS https://msdn.microsoft.com/en-us/library/bb510741.aspx
- DDL https://msdn.microsoft.com/en-US/library/ff848799.aspx
- DML https://msdn.microsoft.com/en-US/library/ff848766.aspx
- EXECUTE https://msdn.microsoft.com/en-US/library/ms188332.aspx
- FUNCTIONS https://msdn.microsoft.com/en-US/library/ms174318.aspx
- JSON https://msdn.microsoft.com/en-US/library/dn921890.aspx