mirror of
https://github.com/MariaDB/server.git
synced 2025-10-30 04:26:45 +03:00
41404ec52e
- Introduced val_int_endpoint() function which converts between func argument intervals and func value intervals for monotonic functions. - Made partition interval analyzer use part_expr->val_int_endpoint() to check if the edge values should be included.
313 lines
10 KiB
C++
313 lines
10 KiB
C++
/* Copyright (C) 2006 MySQL AB
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
|
|
#ifdef USE_PRAGMA_INTERFACE
|
|
#pragma interface /* gcc class implementation */
|
|
#endif
|
|
|
|
#include "partition_element.h"
|
|
|
|
class partition_info;
|
|
|
|
/* Some function typedefs */
|
|
typedef int (*get_part_id_func)(partition_info *part_info,
|
|
uint32 *part_id,
|
|
longlong *func_value);
|
|
typedef uint32 (*get_subpart_id_func)(partition_info *part_info);
|
|
|
|
struct st_ddl_log_memory_entry;
|
|
|
|
class partition_info : public Sql_alloc
|
|
{
|
|
public:
|
|
/*
|
|
* Here comes a set of definitions needed for partitioned table handlers.
|
|
*/
|
|
List<partition_element> partitions;
|
|
List<partition_element> temp_partitions;
|
|
|
|
List<char> part_field_list;
|
|
List<char> subpart_field_list;
|
|
|
|
/*
|
|
If there is no subpartitioning, use only this func to get partition ids.
|
|
If there is subpartitioning, use the this func to get partition id when
|
|
you have both partition and subpartition fields.
|
|
*/
|
|
get_part_id_func get_partition_id;
|
|
|
|
/* Get partition id when we don't have subpartition fields */
|
|
get_part_id_func get_part_partition_id;
|
|
|
|
/*
|
|
Get subpartition id when we have don't have partition fields by we do
|
|
have subpartition ids.
|
|
Mikael said that for given constant tuple
|
|
{subpart_field1, ..., subpart_fieldN} the subpartition id will be the
|
|
same in all subpartitions
|
|
*/
|
|
get_subpart_id_func get_subpartition_id;
|
|
|
|
/*
|
|
When we have various string fields we might need some preparation
|
|
before and clean-up after calling the get_part_id_func's. We need
|
|
one such method for get_partition_id and one for
|
|
get_part_partition_id and one for get_subpartition_id.
|
|
*/
|
|
get_part_id_func get_partition_id_charset;
|
|
get_part_id_func get_part_partition_id_charset;
|
|
get_subpart_id_func get_subpartition_id_charset;
|
|
|
|
/* NULL-terminated array of fields used in partitioned expression */
|
|
Field **part_field_array;
|
|
Field **subpart_field_array;
|
|
Field **part_charset_field_array;
|
|
Field **subpart_charset_field_array;
|
|
/*
|
|
Array of all fields used in partition and subpartition expression,
|
|
without duplicates, NULL-terminated.
|
|
*/
|
|
Field **full_part_field_array;
|
|
Field **full_part_charset_field_array;
|
|
/*
|
|
Set of all fields used in partition and subpartition expression.
|
|
Required for testing of partition fields in write_set when
|
|
updating. We need to set all bits in read_set because the row may
|
|
need to be inserted in a different [sub]partition.
|
|
*/
|
|
MY_BITMAP full_part_field_set;
|
|
|
|
/*
|
|
When we have a field that requires transformation before calling the
|
|
partition functions we must allocate field buffers for the field of
|
|
the fields in the partition function.
|
|
*/
|
|
uchar **part_field_buffers;
|
|
uchar **subpart_field_buffers;
|
|
uchar **full_part_field_buffers;
|
|
uchar **restore_part_field_ptrs;
|
|
uchar **restore_subpart_field_ptrs;
|
|
uchar **restore_full_part_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;
|
|
|
|
/*
|
|
A bitmap of partitions used by the current query.
|
|
Usage pattern:
|
|
* The handler->extra(HA_EXTRA_RESET) call at query start/end sets all
|
|
partitions to be unused.
|
|
* Before index/rnd_init(), partition pruning code sets the bits for used
|
|
partitions.
|
|
*/
|
|
MY_BITMAP used_partitions;
|
|
|
|
union {
|
|
longlong *range_int_array;
|
|
LIST_PART_ENTRY *list_array;
|
|
};
|
|
|
|
/********************************************
|
|
* INTERVAL ANALYSIS
|
|
********************************************/
|
|
/*
|
|
Partitioning interval analysis function for partitioning, or NULL if
|
|
interval analysis is not supported for this kind of partitioning.
|
|
*/
|
|
get_partitions_in_range_iter get_part_iter_for_interval;
|
|
/*
|
|
Partitioning interval analysis function for subpartitioning, or NULL if
|
|
interval analysis is not supported for this kind of partitioning.
|
|
*/
|
|
get_partitions_in_range_iter get_subpart_iter_for_interval;
|
|
|
|
/********************************************
|
|
* INTERVAL ANALYSIS ENDS
|
|
********************************************/
|
|
|
|
longlong err_value;
|
|
char* part_info_string;
|
|
|
|
char *part_func_string;
|
|
char *subpart_func_string;
|
|
|
|
const char *part_state;
|
|
|
|
partition_element *curr_part_elem;
|
|
partition_element *current_partition;
|
|
/*
|
|
These key_map's are used for Partitioning to enable quick decisions
|
|
on whether we can derive more information about which partition to
|
|
scan just by looking at what index is used.
|
|
*/
|
|
key_map all_fields_in_PF, all_fields_in_PPF, all_fields_in_SPF;
|
|
key_map some_fields_in_PF;
|
|
|
|
handlerton *default_engine_type;
|
|
Item_result part_result_type;
|
|
partition_type part_type;
|
|
partition_type subpart_type;
|
|
|
|
uint part_info_len;
|
|
uint part_state_len;
|
|
uint part_func_len;
|
|
uint subpart_func_len;
|
|
|
|
uint no_parts;
|
|
uint no_subparts;
|
|
uint count_curr_subparts;
|
|
|
|
uint part_error_code;
|
|
|
|
uint no_list_values;
|
|
|
|
uint no_part_fields;
|
|
uint no_subpart_fields;
|
|
uint no_full_part_fields;
|
|
|
|
uint has_null_part_id;
|
|
/*
|
|
This variable is used to calculate the partition id when using
|
|
LINEAR KEY/HASH. This functionality is kept in the MySQL Server
|
|
but mainly of use to handlers supporting partitioning.
|
|
*/
|
|
uint16 linear_hash_mask;
|
|
|
|
bool use_default_partitions;
|
|
bool use_default_no_partitions;
|
|
bool use_default_subpartitions;
|
|
bool use_default_no_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 from_openfrm;
|
|
bool has_null_value;
|
|
|
|
|
|
partition_info()
|
|
: get_partition_id(NULL), get_part_partition_id(NULL),
|
|
get_subpartition_id(NULL),
|
|
part_field_array(NULL), subpart_field_array(NULL),
|
|
part_charset_field_array(NULL),
|
|
subpart_charset_field_array(NULL),
|
|
full_part_field_array(NULL),
|
|
full_part_charset_field_array(NULL),
|
|
part_field_buffers(NULL), subpart_field_buffers(NULL),
|
|
full_part_field_buffers(NULL),
|
|
restore_part_field_ptrs(NULL), restore_subpart_field_ptrs(NULL),
|
|
restore_full_part_field_ptrs(NULL),
|
|
part_expr(NULL), subpart_expr(NULL), item_free_list(NULL),
|
|
first_log_entry(NULL), exec_log_entry(NULL), frm_log_entry(NULL),
|
|
list_array(NULL), err_value(0),
|
|
part_info_string(NULL),
|
|
part_func_string(NULL), subpart_func_string(NULL),
|
|
part_state(NULL),
|
|
curr_part_elem(NULL), current_partition(NULL),
|
|
default_engine_type(NULL),
|
|
part_result_type(INT_RESULT),
|
|
part_type(NOT_A_PARTITION), subpart_type(NOT_A_PARTITION),
|
|
part_info_len(0), part_state_len(0),
|
|
part_func_len(0), subpart_func_len(0),
|
|
no_parts(0), no_subparts(0),
|
|
count_curr_subparts(0), part_error_code(0),
|
|
no_list_values(0), no_part_fields(0), no_subpart_fields(0),
|
|
no_full_part_fields(0), has_null_part_id(0), linear_hash_mask(0),
|
|
use_default_partitions(TRUE), use_default_no_partitions(TRUE),
|
|
use_default_subpartitions(TRUE), use_default_no_subpartitions(TRUE),
|
|
default_partitions_setup(FALSE), defined_max_value(FALSE),
|
|
list_of_part_fields(FALSE), list_of_subpart_fields(FALSE),
|
|
linear_hash_ind(FALSE), fixed(FALSE),
|
|
is_auto_partitioned(FALSE), from_openfrm(FALSE),
|
|
has_null_value(FALSE)
|
|
{
|
|
all_fields_in_PF.clear_all();
|
|
all_fields_in_PPF.clear_all();
|
|
all_fields_in_SPF.clear_all();
|
|
some_fields_in_PF.clear_all();
|
|
partitions.empty();
|
|
temp_partitions.empty();
|
|
part_field_list.empty();
|
|
subpart_field_list.empty();
|
|
}
|
|
~partition_info() {}
|
|
|
|
partition_info *get_clone();
|
|
/* Answers the question if subpartitioning is used for a certain table */
|
|
bool is_sub_partitioned()
|
|
{
|
|
return (subpart_type == NOT_A_PARTITION ? FALSE : TRUE);
|
|
}
|
|
|
|
/* Returns the total number of partitions on the leaf level */
|
|
uint get_tot_partitions()
|
|
{
|
|
return no_parts * (is_sub_partitioned() ? no_subparts : 1);
|
|
}
|
|
|
|
bool set_up_defaults_for_partitioning(handler *file, HA_CREATE_INFO *info,
|
|
uint start_no);
|
|
char *has_unique_names();
|
|
static bool check_engine_mix(handlerton **engine_array, uint no_parts);
|
|
bool check_range_constants();
|
|
bool check_list_constants();
|
|
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);
|
|
bool set_up_charset_field_preps();
|
|
private:
|
|
static int list_part_cmp(const void* a, const void* b);
|
|
static int list_part_cmp_unsigned(const void* a, const void* b);
|
|
bool set_up_default_partitions(handler *file, HA_CREATE_INFO *info,
|
|
uint start_no);
|
|
bool set_up_default_subpartitions(handler *file, HA_CREATE_INFO *info);
|
|
char *create_default_partition_names(uint part_no, uint no_parts,
|
|
uint start_no);
|
|
char *create_subpartition_name(uint subpart_no, const char *part_name);
|
|
bool has_unique_name(partition_element *element);
|
|
};
|
|
|
|
uint32 get_next_partition_id_range(struct st_partition_iter* part_iter);
|
|
|
|
/* Initialize the iterator to return a single partition with given part_id */
|
|
|
|
static inline void init_single_partition_iterator(uint32 part_id,
|
|
PARTITION_ITERATOR *part_iter)
|
|
{
|
|
part_iter->part_nums.start= part_iter->part_nums.cur= part_id;
|
|
part_iter->part_nums.end= part_id+1;
|
|
part_iter->get_next= get_next_partition_id_range;
|
|
}
|
|
|
|
/* Initialize the iterator to enumerate all partitions */
|
|
static inline
|
|
void init_all_partitions_iterator(partition_info *part_info,
|
|
PARTITION_ITERATOR *part_iter)
|
|
{
|
|
part_iter->part_nums.start= part_iter->part_nums.cur= 0;
|
|
part_iter->part_nums.end= part_info->no_parts;
|
|
part_iter->get_next= get_next_partition_id_range;
|
|
}
|