Item_func_match Class Reference

Inheritance diagram for Item_func_match:

List of all members.

Public Member Functions
	Item_func_match (List< Item > &a, uint b)
void	cleanup ()
enum Functype	functype () const
const char *	func_name () const
void	update_used_tables ()
table_map	not_null_tables () const
bool	fix_fields (THD *thd, Item **ref)
bool	eq (const Item *, bool binary_cmp) const
longlong	val_int ()
double	val_real ()
virtual void	print (String *str, enum_query_type query_type)
bool	fix_index ()
void	init_search (bool no_order)
ulonglong	get_count ()
bool	ordered_result ()
bool	docid_in_result ()
Public Attributes
uint	key
uint	flags
bool	join_key
DTCollation	cmp_collation
FT_INFO *	ft_handler
TABLE *	table
Item_func_match *	master
Item *	concat_ws
String	value
String	search_value

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Member Function Documentation

bool Item_func_match::docid_in_result

(

)

[inline]

Check whether FT result contains the document ID

Returns:

true if document ID is available

false otherwise

bool Item_func_match::eq	(	const Item *	item,
		bool	binary_cmp
	)		const [virtual]

This function is called when:

• Comparing items in the WHERE clause (when doing where optimization)
• When trying to find an ORDER BY/GROUP BY item in the SELECT part
• When matching fields in multiple equality objects (Item_equal)

Reimplemented from Item_func.

ulonglong Item_func_match::get_count

(

)

[inline]

Get number of matching rows from FT handler.

Note:

Requires that FT handler supports the extended API

Returns:

Number of matching rows in result

bool Item_func_match::ordered_result

(

)

[inline]

Check whether FT result is ordered on rank

Returns:

true if result is ordered

false otherwise

void Item_func_match::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.

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

• item_func.h
• item_func.cc