partition_info Class Reference

Inheritance diagram for partition_info:

Collaboration diagram for partition_info:

Public Types
enum	enum_key_algorithm { KEY_ALGORITHM_NONE = 0, KEY_ALGORITHM_51 = 1, KEY_ALGORITHM_55 = 2 }
enum	enum_can_prune { PRUNE_NO = 0, PRUNE_DEFAULTS, PRUNE_YES }

Public Member Functions
partition_info *	get_clone ()
bool	set_named_partition_bitmap (const char *part_name, uint length)
bool	set_partition_bitmaps (TABLE_LIST *table_list)
bool	is_sub_partitioned ()
uint	get_tot_partitions ()
bool	set_up_defaults_for_partitioning (handler *file, HA_CREATE_INFO *info, uint start_no)
char *	find_duplicate_field ()
char *	find_duplicate_name ()
bool	check_engine_mix (handlerton *engine_type, bool default_engine)
bool	check_range_constants (THD *thd)
bool	check_list_constants (THD *thd)
bool	check_partition_info (THD *thd, handlerton **eng_type, handler *file, HA_CREATE_INFO *info, bool check_partition_function)
void	print_no_partition_found (TABLE *table)
void	print_debug (const char *str, uint *)
Item *	get_column_item (Item *item, Field *field)
bool	fix_partition_values (THD *thd, part_elem_value *val, partition_element *part_elem, uint part_id)
bool	fix_column_value_functions (THD *thd, part_elem_value *val, uint part_id)
bool	fix_parser_data (THD *thd)
bool	add_max_value ()
void	init_col_val (part_column_list_val *col_val, Item *item)
bool	reorganize_into_single_field_col_val ()
part_column_list_val *	add_column_value ()
bool	set_part_expr (char *start_token, Item *item_ptr, char *end_token, bool is_subpart)
bool	set_up_charset_field_preps ()
bool	check_partition_field_length ()
bool	init_column_part ()
bool	add_column_list_value (THD *thd, Item *item)
void	set_show_version_string (String *packet)
partition_element *	get_part_elem (const char *partition_name, char *file_name, uint32 *part_id)
void	report_part_expr_error (bool use_subpart_expr)
bool	set_used_partition (List< Item > &fields, List< Item > &values, COPY_INFO &info, bool copy_default_values, MY_BITMAP *used_partitions)
bool	can_prune_insert (THD *thd, enum_duplicates duplic, COPY_INFO &update, List< Item > &update_fields, List< Item > &fields, bool empty_values, enum_can_prune *can_prune_partitions, bool *prune_needs_default_values, MY_BITMAP *used_partitions)
bool	has_same_partitioning (partition_info *new_part_info)

Static Public Member Functions
static int	compare_column_values (const void *a, const void *b)
Static Public Member Functions inherited from Sql_alloc
static void *	operator new (size_t size) throw ()
static void *	operator new[] (size_t size) throw ()
static void *	operator new[] (size_t size, MEM_ROOT *mem_root) throw ()
static void *	operator new (size_t size, MEM_ROOT *mem_root) throw ()
static void	operator delete (void *ptr, size_t size)
static void	operator delete (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, size_t size)

Public Attributes
List< partition_element >	partitions
List< partition_element >	temp_partitions
List< char >	part_field_list
List< char >	subpart_field_list
get_part_id_func	get_partition_id
get_part_id_func	get_part_partition_id
get_subpart_id_func	get_subpartition_id
get_part_id_func	get_part_partition_id_charset
get_subpart_id_func	get_subpartition_id_charset
Field **	part_field_array
Field **	subpart_field_array
Field **	part_charset_field_array
Field **	subpart_charset_field_array
Field **	full_part_field_array
MY_BITMAP	full_part_field_set
uchar **	part_field_buffers
uchar **	subpart_field_buffers
uchar **	restore_part_field_ptrs
uchar **	restore_subpart_field_ptrs
Item *	part_expr
Item *	subpart_expr
Item *	item_free_list
struct st_ddl_log_memory_entry *	first_log_entry
struct st_ddl_log_memory_entry *	exec_log_entry
struct st_ddl_log_memory_entry *	frm_log_entry
MY_BITMAP	read_partitions
MY_BITMAP	lock_partitions
bool	bitmaps_are_initialized
union {
longlong *   range_int_array
LIST_PART_ENTRY *   list_array
part_column_list_val *   range_col_array
part_column_list_val *   list_col_array
};
get_partitions_in_range_iter	get_part_iter_for_interval
get_partitions_in_range_iter	get_subpart_iter_for_interval
longlong	err_value
char *	part_info_string
char *	part_func_string
char *	subpart_func_string
partition_element *	curr_part_elem
partition_element *	current_partition
part_elem_value *	curr_list_val
uint	curr_list_object
uint	num_columns
TABLE *	table
key_map	all_fields_in_PF
key_map	all_fields_in_PPF
key_map	all_fields_in_SPF
key_map	some_fields_in_PF
handlerton *	default_engine_type
partition_type	part_type
partition_type	subpart_type
uint	part_info_len
uint	part_func_len
uint	subpart_func_len
uint	num_parts
uint	num_subparts
uint	count_curr_subparts
uint	num_list_values
uint	num_part_fields
uint	num_subpart_fields
uint	num_full_part_fields
uint	has_null_part_id
uint16	linear_hash_mask
enum_key_algorithm	key_algorithm
bool	use_default_partitions
bool	use_default_num_partitions
bool	use_default_subpartitions
bool	use_default_num_subpartitions
bool	default_partitions_setup
bool	defined_max_value
bool	list_of_part_fields
bool	list_of_subpart_fields
bool	linear_hash_ind
bool	fixed
bool	is_auto_partitioned
bool	has_null_value
bool	column_list
bool	is_pruning_completed

Detailed Description

Definition at line 35 of file partition_info.h.

Member Enumeration Documentation

enum partition_info::enum_can_prune

PRUNE_NO - Unable to prune. PRUNE_DEFAULTS - Partitioning field is only set to DEFAULT values, only need to check pruning for one row where the DEFAULTS values are set. PRUNE_YES - Pruning is possible, calculate the used partition set by evaluate the partition_id on row by row basis.

Definition at line 355 of file partition_info.h.

Member Data Documentation

bool partition_info::is_pruning_completed

True if pruning has been completed and can not be pruned any further, even if there are subqueries or stored programs in the condition.

Some times it is needed to run prune_partitions() a second time to prune read partitions after tables are locked, when subquery and stored functions might have been evaluated.

Definition at line 246 of file partition_info.h.

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

• sql/partition_info.h
• sql/partition_info.cc