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Merge newbox:mysql-5.1-ppruning-r4

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into  pylon.mylan:/home/psergey/mysql-5.1-26dec-merge
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sergefp@mysql.com
2005-12-26 14:56:15 +03:00
parent 88bcd74d76 81452dbcfc
commit e597607cb8
16 changed files with 2165 additions and 60 deletions
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46
sql/handler.h
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@ -547,19 +547,52 @@ public:
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_part_id_func get_part_partition_id;
get_subpart_id_func get_subpartition_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;
/* NULL-terminated list of fields used in partitioned expression */
Field **part_field_array;
/* NULL-terminated list of fields used in subpartitioned expression */
Field **subpart_field_array;
/*
Array of all fields used in partition and subpartition expression,
without duplicates, NULL-terminated.
*/
Field **full_part_field_array;
Item *part_expr;
Item *subpart_expr;
Item *item_free_list;
/*
A bitmap of partitions used by the current query.
Usage pattern:
* It is guaranteed that all partitions are set to be unused on query start.
* Before index/rnd_init(), partition pruning code sets the bits for used
partitions.
* The handler->extra(HA_EXTRA_RESET) call at query end sets all partitions
to be unused.
*/
MY_BITMAP used_partitions;
union {
longlong *range_int_array;
@ -760,6 +793,13 @@ void get_full_part_id_from_key(const TABLE *table, byte *buf,
bool mysql_unpack_partition(THD *thd, const uchar *part_buf,
uint part_info_len, TABLE *table,
handlerton *default_db_type);
void make_used_partitions_str(partition_info *part_info, String *parts_str);
uint32 get_list_array_idx_for_endpoint(partition_info *part_info,
bool left_endpoint,
bool include_endpoint);
uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
bool left_endpoint,
bool include_endpoint);
#endif