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MDEV-10142 - bb-10.2-compatibility
To build this branch on windows (Visual Studio Express 2015), I have to add "#pragma warning( disable : 4099 )" in sql_lex.h.
But I don't know if it's the right solution.
I have some questions:
- I read the comment of Michael Widenius on subtask MDEV-10574.
I think that it's important to change behavior of string functions whose returns a string (like rtrim, ltrim, substring, concat, ...) to return null instead of ''.
Without this, we have to use UDF instead native functions and it's never good from a performance point of view.
Have you made a decision ?
- On Oracle, we can easily disable/enable triggers. I found an old request for this on jira : MDEV-7579. As you already manage order_action now, perhaps you can simply use negative orders to indicate disabled triggers.
- do you have planning to implement operator || to concat strings ?