Item_func_isnull Class Reference

Inheritance diagram for Item_func_isnull:

List of all members.

Public Member Functions
	Item_func_isnull (Item *a)
longlong	val_int ()
enum Functype	functype () const
void	fix_length_and_dec ()
const char *	func_name () const
virtual void	update_used_tables ()
table_map	not_null_tables () const
optimize_type	select_optimize () const
Item *	neg_transformer (THD *thd)
const CHARSET_INFO *	compare_collation ()
Protected Attributes
longlong	cached_value

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Member Function Documentation

Item * Item_func_isnull::neg_transformer

(

THD *

thd

)

[virtual]

a IS NULL -> a IS NOT NULL.

Reimplemented from Item.

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

• item_cmpfunc.h
• item_cmpfunc.cc