Item_func_opt_neg Class Reference

Inheritance diagram for Item_func_opt_neg:

List of all members.

Public Member Functions
	Item_func_opt_neg (Item *a, Item *b, Item *c)
	Item_func_opt_neg (List< Item > &list)
void	negate ()
void	top_level_item ()
Item *	neg_transformer (THD *thd)
bool	eq (const Item *item, bool binary_cmp) const
bool	subst_argument_checker (uchar **arg)
Public Attributes
bool	negated
bool	pred_level

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Member Function Documentation

bool Item_func_opt_neg::eq	(	const Item *	item,
		bool	binary_cmp
	)		const [virtual]

This function is called when:

• Comparing items in the WHERE clause (when doing where optimization)
• When trying to find an ORDER BY/GROUP BY item in the SELECT part
• When matching fields in multiple equality objects (Item_equal)

Reimplemented from Item_func.

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The documentation for this class was generated from the following files:

• item_cmpfunc.h
• item_cmpfunc.cc