QUICK_RANGE_SELECT Class Reference

Inheritance diagram for QUICK_RANGE_SELECT:

List of all members.

Public Member Functions
	QUICK_RANGE_SELECT (THD *thd, TABLE *table, uint index_arg, bool no_alloc, MEM_ROOT *parent_alloc, bool *create_error)
void	need_sorted_output ()
int	init ()
int	reset (void)
int	get_next ()
void	range_end ()
int	get_next_prefix (uint prefix_length, uint group_key_parts, uchar *cur_prefix)
bool	reverse_sorted () const
bool	reverse_sort_possible () const
bool	unique_key_range ()
int	init_ror_merged_scan (bool reuse_handler)
void	save_last_pos ()
int	get_type ()
void	add_keys_and_lengths (String *key_names, String *used_lengths)
void	add_info_string (String *str)
void	dbug_dump (int indent, bool verbose)
QUICK_SELECT_I *	make_reverse (uint used_key_parts_arg)
void	set_handler (handler *file_arg)
Public Attributes
uint	mrr_flags
MEM_ROOT	alloc
Protected Member Functions
int	cmp_next (QUICK_RANGE *range)
int	cmp_prev (QUICK_RANGE *range)
bool	row_in_ranges ()
Protected Attributes
handler *	file
bool	in_ror_merged_scan
MY_BITMAP	column_bitmap
DYNAMIC_ARRAY	ranges
bool	free_file
QUICK_RANGE **	cur_range
QUICK_RANGE *	last_range
QUICK_RANGE_SEQ_CTX	qr_traversal_ctx
uint	mrr_buf_size
HANDLER_BUFFER *	mrr_buf_desc
KEY_PART *	key_parts
KEY_PART_INFO *	key_part_info
bool	dont_free
Friends
class	TRP_ROR_INTERSECT
class	QUICK_SELECT_DESC
class	QUICK_INDEX_MERGE_SELECT
class	QUICK_ROR_INTERSECT_SELECT
class	QUICK_GROUP_MIN_MAX_SELECT
QUICK_RANGE_SELECT *	get_quick_select_for_ref (THD *thd, TABLE *table, struct st_table_ref *ref, ha_rows records)
bool	get_quick_keys (PARAM *param, QUICK_RANGE_SELECT *quick, KEY_PART *key, SEL_ARG *key_tree, uchar *min_key, uint min_key_flag, uchar *max_key, uint max_key_flag)
QUICK_RANGE_SELECT *	get_quick_select (PARAM *, uint idx, SEL_ARG *key_tree, uint mrr_flags, uint mrr_buf_size, MEM_ROOT *alloc)
uint	quick_range_seq_next (range_seq_t rseq, KEY_MULTI_RANGE *range)
range_seq_t	quick_range_seq_init (void *init_param, uint n_ranges, uint flags)

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Member Function Documentation

QUICK_SELECT_I * QUICK_RANGE_SELECT::make_reverse

(

uint

used_key_parts_arg

)

[virtual]

Create a compatible quick select with the result ordered in an opposite way

Parameters:

used_key_parts_arg

Number of used key parts

Return values:

NULL	in case of errors (OOM etc)
pointer	to a newly created QUICK_SELECT_DESC if success

Reimplemented from QUICK_SELECT_I.

Reimplemented in QUICK_SELECT_DESC.

bool QUICK_RANGE_SELECT::reverse_sort_possible

(

)

const [inline, virtual]

Whether the range access method is capable of returning records in reverse order.

Implements QUICK_SELECT_I.

Reimplemented in QUICK_SELECT_DESC.

bool QUICK_RANGE_SELECT::reverse_sorted

(

)

const [inline, virtual]

Whether the range access method returns records in reverse order.

Implements QUICK_SELECT_I.

Reimplemented in QUICK_SELECT_DESC.

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

• opt_range.h
• opt_range.cc