Commit f65038bd authored by unknown's avatar unknown
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Improved comments

parent 7687a272

sql/item_subselect.h

+5 −1
Original line number Diff line number Diff line
@@ -179,7 +179,11 @@ class Item_singlerow_subselect :public Item_subselect 
    rewriting, mandated by a SQL:2003 exception in the specification.

    The only caller of this method is handle_sql2003_note184_exception(),

    see the code there for more details.

    Do not call this method for other purposes.

    Note that this method breaks the object internal integrity, by

    removing it's association with the corresponding SELECT_LEX,

    making this object orphan from the parse tree.

    No other method, beside the destructor, should be called on this

    object, as it is now invalid.

    @return the SELECT_LEX structure that was given in the constructor.

  */

  st_select_lex* invalidate_and_restore_select_lex();