MySQL 8.0.32
Source Code Documentation
Query_dumpvar Class Referencefinal

#include <query_result.h>

Inheritance diagram for Query_dumpvar:
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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...
 
- 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
 
bool is_interceptor () const final
 Checks if this Query_result intercepts and transforms the result set. More...
 
- 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 void set_limit (ha_rows)
 Only overridden (and non-empty) for Query_result_union, q.v. More...
 
virtual Server_side_cursorcursor () const
 

Public Attributes

List< PT_select_varvar_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_expressionunit
 

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.

Member Data Documentation

◆ row_count

ha_rows Query_dumpvar::row_count
private

◆ var_list

List<PT_select_var> Query_dumpvar::var_list

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