DERIVED TABLE IN JOIN

ISSUE:
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This problem occurs under the following conditions:
1) A parameter is used in the select-list of a derived table.
2) The derived table is part of a JOIN.

SOLUTION:
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When a derived table is materialized, a temporary table is
created. This temporary table creates a field each for the
items in the select-list of the derived table. This set of
fields is later used to setup the join.

Currently no field is created in the temporary table if a
parameter is used in the select-list.

Create a field for the parameter. By default Item_param's
result type in a prepared statement is set to
STRING_RESULT. This can change during the execute phase
depending on the user variable. But since the execute phase
creates its own temporary table, it will be handled
separately.

This is a backport of the fix for BUG#22392374.