Item_name_const Class Reference

Inheritance diagram for Item_name_const:

List of all members.

Public Member Functions
	Item_name_const (Item *name_arg, Item *val)
bool	fix_fields (THD *, Item **)
enum Type	type () const
double	val_real ()
longlong	val_int ()
String *	val_str (String *sp)
my_decimal *	val_decimal (my_decimal *)
bool	get_date (MYSQL_TIME *ltime, uint fuzzydate)
bool	get_time (MYSQL_TIME *ltime)
bool	is_null ()
virtual void	print (String *str, enum_query_type query_type)
Item_result	result_type () const
type_conversion_status	save_in_field (Field *field, bool no_conversions)
bool	send (Protocol *protocol, String *str)

---

Member Function Documentation

void Item_name_const::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.

type_conversion_status Item_name_const::save_in_field	(	Field *	field,
		bool	no_conversions
	)		[inline, virtual]

Save a temporal value in packed longlong format into a Field. Used in optimizer.

Parameters:

OUT	field The field to set the value to.

Return values:

0	On success.
>0	In error.

Reimplemented from Item.

bool Item_name_const::send	(	Protocol *	protocol,
		String *	buffer
	)		[inline, virtual]

This is only called from items that is not of type item_field.

Reimplemented from Item.

---

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

• item.h
• item.cc