Gagan Goel a117786027 MCOL-4282 Enable Select Handler for Prepared Statements ...

This patch enables select handler for executing prepared
statements. Most importantly, we are now activating a
persistent arena which will allocate any new items in a
permanent MEMROOT for prepared statements and stored procedures.
Refer to JOIN::optimize_inner() for details.

In processWhere(), we now use SELECT_LEX::prep_where in case
we are executing a prepared statement, as this is where the saved
WHERE clause is stored for prepared statement processing.

In addition, we also disable derived handler for prepared
statements.

2020-09-11 16:35:51 -04:00

1.1 KiB

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