drizzled::subselect_indexsubquery_engine Class Reference

Inheritance diagram for drizzled::subselect_indexsubquery_engine:

List of all members.

Public Types
enum	enum_engine_type {   ABSTRACT_ENGINE, SINGLE_SELECT_ENGINE, UNION_ENGINE, UNIQUESUBQUERY_ENGINE,   INDEXSUBQUERY_ENGINE, HASH_SJ_ENGINE }
Public Member Functions
	subselect_indexsubquery_engine (Session *session_arg, JoinTable *tab_arg, Item_subselect *subs, Item *where, Item *having_arg, bool chk_null)
int	exec ()
virtual void	print (String *str)
virtual enum_engine_type	engine_type ()
void	cleanup ()
int	prepare ()
void	fix_length_and_dec (Item_cache **row)
uint32_t	cols ()
bool	uncacheable ()
bool	uncacheable (uint32_t)
void	exclude ()
table_map	upper_select_const_tables ()
bool	change_result (Item_subselect *si, select_result_interceptor *result)
bool	no_tables ()
int	scan_table ()
bool	copy_ref_key ()
bool	no_rows ()
void	set_session (Session *session_arg)
Session *	get_session ()
enum Item_result	type ()
enum_field_types	field_type ()
virtual bool	may_be_null ()
virtual bool	is_executed () const
Static Public Member Functions
static table_map	calc_const_tables (TableList *)
static void *	operator new (size_t size)
static void *	operator new (size_t size, Root *mem_root)
static void *	operator new[] (size_t size)
static void *	operator new[] (size_t size, Root *mem_root)
static void	operator delete (void *, size_t)
static void	operator delete (void *, Root *)
static void	operator delete[] (void *, Root *)
static void	operator delete[] (void *, size_t)
Protected Member Functions
void	set_row (List< Item > &item_list, Item_cache **row)
Protected Attributes
JoinTable *	tab
Item *	cond
bool	empty_result_set
bool	null_keypart
select_result_interceptor *	result
Session *	session
Item_subselect *	item
enum Item_result	res_type
enum_field_types	res_field_type
bool	maybe_null
Private Attributes
bool	check_null
Item *	having

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Detailed Description

Definition at line 604 of file subselect.h.

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Member Function Documentation

bool drizzled::subselect_uniquesubquery_engine::change_result	(	Item_subselect *	si,
		select_result_interceptor *	result
	)		[virtual, inherited]

change select_result emulation, never should be called.

Parameters:

si	new subselect Item
res	new select_result object

Return values:

false	OK
true	error

Implements drizzled::subselect_engine.

Definition at line 2913 of file subselect.cc.

bool drizzled::subselect_uniquesubquery_engine::no_tables

(

)

[virtual, inherited]

Report about presence of tables in subquery.

Return values:

true	there are not tables used in subquery
false	there are some tables in subquery

Implements drizzled::subselect_engine.

Definition at line 2979 of file subselect.cc.

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

• drizzled/item/subselect.h
• drizzled/item/subselect.cc