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Getting the columns from LEX or THD


Hi all,

I wanted to retrieve a tables columns i.e its schema definition when a
query is executed. I figured out LEX and THD structures store these in
different variables for different queries.

I wanted to get the same when a simple INSERT query is executed, e.g INSERT
INTO <table> VALUES(<values>). Where can I find it?

Is there any mechanism to get a tables schema that will work for any kind
of query?


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