Inheritance diagram for Item_func_not_all:

Public Member Functions
	Item_func_not_all (Item *a)
virtual void	top_level_item ()
bool	top_level ()
longlong	val_int ()
enum Functype	functype () const
const char *	func_name () const
virtual void	print (String *str, enum_query_type query_type)
void	set_sum_test (Item_sum_hybrid *item)
void	set_sub_test (Item_maxmin_subselect *item)
void	set_subselect (Item_subselect *item)
table_map	not_null_tables () const
bool	empty_underlying_subquery ()
Item *	neg_transformer (THD *thd)
Public Attributes
bool	show

Member Function Documentation

Item * Item_func_not_all::neg_transformer ( THD * thd ) [virtual]

Apply NOT transformation to the item and return a new one.

Transform the item using next rules:

       a AND b AND ...    -> NOT(a) OR NOT(b) OR ...
       a OR b OR ...      -> NOT(a) AND NOT(b) AND ...
       NOT(a)             -> a
       a = b              -> a != b
       a != b             -> a = b
       a < b              -> a >= b
       a >= b             -> a < b
       a > b              -> a <= b
       a <= b             -> a > b
       IS NULL(a)         -> IS NOT NULL(a)
       IS NOT NULL(a)     -> IS NULL(a)

Parameters:

thd	thread handler

Returns:: New item or NULL if we cannot apply NOT transformation (see Item::neg_transformer()).

Reimplemented from Item_func_not.

Reimplemented in Item_func_nop_all.

void Item_func_not_all::print	(	String *	str,
		enum_query_type	query_type
	)		`[virtual]`

This method is used for to:

to generate a view definition query (SELECT-statement);
to generate a SQL-query for EXPLAIN EXTENDED;
to generate a SQL-query to be shown in INFORMATION_SCHEMA;
debug.

For more information about view definition query, INFORMATION_SCHEMA query and why they should be generated from the Item-tree,

See also:: mysql_register_view().

Reimplemented from Item_func_not.

longlong Item_func_not_all::val_int ( void ) [virtual]

special NOT for ALL subquery.

Reimplemented from Item_func_not.

Reimplemented in Item_func_nop_all.

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

Public Member Functions

Public Attributes

Member Function Documentation