Query_dumpvar Class Reference

#include <query_result.h>

Inheritance diagram for Query_dumpvar:

Public Member Functions
	Query_dumpvar ()
bool	prepare (THD *thd, const mem_root_deque< Item * > &list, Query_expression *u) override
	Perform preparation specific to the query expression or DML statement. More...
bool	send_data (THD *thd, const mem_root_deque< Item * > &items) override
bool	send_eof (THD *thd) override
bool	check_supports_cursor () const override
	Check if this query result set supports cursors. More...
void	cleanup () override
	Cleanup after this execution. More...
bool	use_protocol_wrapper () const override
	An alternative implementation may provide an optimized protocol wrapper for this object. More...
Public Member Functions inherited from Query_result_interceptor
	Query_result_interceptor ()
uint	field_count (const mem_root_deque< Item * > &) const override
bool	send_result_set_metadata (THD *, const mem_root_deque< Item * > &, uint) override
Public Member Functions inherited from Query_result
	Query_result ()
virtual	~Query_result ()=default
virtual bool	needs_file_privilege () const
virtual bool	change_query_result (THD *, Query_result *)
	Change wrapped Query_result. More...
virtual bool	need_explain_interceptor () const
virtual bool	start_execution (THD *)
	Prepare for execution of the query expression or DML statement. More...
virtual bool	create_table_for_query_block (THD *)
	Create table, only needed to support CREATE TABLE ... SELECT. More...
virtual void	abort_result_set (THD *)
virtual bool	reset ()
	Cleanup after one execution of the unit, to be ready for a next execution inside the same statement. More...
virtual bool	use_protocol_adapter () const
virtual void	set_limit (ha_rows)
	Only overridden (and non-empty) for Query_result_union, q.v. More...
virtual Server_side_cursor *	cursor () const

Public Attributes
List< PT_select_var >	var_list
Public Attributes inherited from Query_result
ha_rows	estimated_rowcount
	Number of records estimated in this result. More...
double	estimated_cost
	Cost to execute the subquery which produces this result. More...

Private Attributes
ha_rows	row_count

Additional Inherited Members
Protected Attributes inherited from Query_result
Query_expression *	unit

Constructor & Destructor Documentation

Query_dumpvar()

Query_dumpvar::Query_dumpvar ( )

inline

Member Function Documentation

check_supports_cursor()

bool Query_dumpvar::check_supports_cursor ( ) const

overridevirtual

Check if this query result set supports cursors.

Returns

false if success, true if error

Reimplemented from Query_result.

cleanup()

void Query_dumpvar::cleanup ( )

inlineoverridevirtual

Cleanup after this execution.

Completes the execution and resets object before next execution of a prepared statement/stored procedure.

Reimplemented from Query_result.

prepare()

bool Query_dumpvar::prepare ( THD *  , const mem_root_deque< Item * > &  , Query_expression *  u  )

overridevirtual

Perform preparation specific to the query expression or DML statement.

Returns

false if success, true if error

Reimplemented from Query_result.

send_data()

bool Query_dumpvar::send_data ( THD *  thd, const mem_root_deque< Item * > &  items  )

overridevirtual

Implements Query_result.

send_eof()

bool Query_dumpvar::send_eof ( THD *  thd )

overridevirtual

Implements Query_result.

use_protocol_wrapper()

bool Query_dumpvar::use_protocol_wrapper ( ) const

inlineoverridevirtual

An alternative implementation may provide an optimized protocol wrapper for this object.

Reimplemented from Query_result.

Member Data Documentation

row_count

ha_rows Query_dumpvar::row_count

private

var_list

List<PT_select_var> Query_dumpvar::var_list

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

• sql/query_result.h
• sql/query_result.cc