Item_cond_and Class Reference

Inheritance diagram for Item_cond_and:

List of all members.

Public Member Functions
	Item_cond_and (Item *i1, Item *i2)
	Item_cond_and (THD *thd, Item_cond_and *item)
	Item_cond_and (List< Item > &list_arg)
enum Functype	functype () const
longlong	val_int ()
const char *	func_name () const
Item *	copy_andor_structure (THD *thd, bool real_items)
Item *	neg_transformer (THD *thd)
Public Attributes
COND_EQUAL	cond_equal

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Member Function Documentation

Item* Item_cond_and::copy_andor_structure	(	THD *	thd,
		bool	real_items
	)		[inline, virtual]

Parameters:

real_items

True <=> in the copy, replace any Item_ref with its real_item()

Todo:

this argument should be always false and removed in WL#7082.

Reimplemented from Item.

longlong Item_cond_and::val_int

(

void

)

[virtual]

Evaluation of AND(expr, expr, expr ...).

Note:

abort_if_null is set for AND expressions for which we don't care if the result is NULL or 0. This is set for:

• WHERE clause
• HAVING clause
• IF(expression)

Return values:

1	If all expressions are true
0	If all expressions are false or if we find a NULL expression and 'abort_on_null' is set.
NULL	if all expression are either 1 or NULL

Implements Item.

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

• item_cmpfunc.h
• item_cmpfunc.cc