Item::Collect_scalar_subquery_info Struct Reference

Context struct used by walk method collect_scalar_subqueries to accumulate information about scalar subqueries found. More...

#include <item.h>

Inheritance diagram for Item::Collect_scalar_subquery_info:

Public Types
enum	Location { L_SELECT = 1 , L_WHERE = 2 , L_HAVING = 4 , L_JOIN_COND = 8 }

Public Member Functions
	Collect_scalar_subquery_info ()=default

Public Attributes
std::vector< Css_info >	m_list
	accumulated all scalar subqueries found More...
int8	m_location {0}
	we are currently looking at this kind of clause, cf. enum Location More...
Item *	m_join_condition_context {nullptr}
bool	m_collect_unconditionally {false}

Friends
class	Item_sum
class	Item_singlerow_subselect

Additional Inherited Members
Protected Member Functions inherited from Item_tree_walker
	Item_tree_walker ()
	~Item_tree_walker ()
	Item_tree_walker (const Item_tree_walker &)=delete
Item_tree_walker &	operator= (const Item_tree_walker &)=delete
void	stop_at (const Item *i)
	Stops walking children of this item. More...
bool	is_stopped (const Item *i)

Detailed Description

Context struct used by walk method collect_scalar_subqueries to accumulate information about scalar subqueries found.

In: m_location of expression walked, m_join_condition_context Out: m_list

Member Enumeration Documentation

Location

enum Item::Collect_scalar_subquery_info::Location

Enumerator
L_SELECT
L_WHERE
L_HAVING
L_JOIN_COND

Constructor & Destructor Documentation

Collect_scalar_subquery_info()

Item::Collect_scalar_subquery_info::Collect_scalar_subquery_info ( )

default

Friends And Related Function Documentation

Item_singlerow_subselect

friend class Item_singlerow_subselect

friend

Item_sum

friend class Item_sum

friend

Member Data Documentation

m_collect_unconditionally

bool Item::Collect_scalar_subquery_info::m_collect_unconditionally {false}

m_join_condition_context

Item* Item::Collect_scalar_subquery_info::m_join_condition_context {nullptr}

m_list

std::vector<Css_info> Item::Collect_scalar_subquery_info::m_list

accumulated all scalar subqueries found

m_location

int8 Item::Collect_scalar_subquery_info::m_location {0}

we are currently looking at this kind of clause, cf. enum Location

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The documentation for this struct was generated from the following file:

• sql/item.h