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WL#3352, Introducing Column list partitioning, makes it possible to partition on most data types, makes it possible to prune on multi-field partitioning

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This commit is contained in:
Mikael Ronstrom
2009-09-15 17:07:52 +02:00
parent 51c27a6942
commit 12627d4072
27 changed files with 2235 additions and 760 deletions
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12
sql/sql_partition.h
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@ -173,9 +173,12 @@ typedef struct st_partition_iter
SYNOPSIS
get_partitions_in_range_iter()
part_info Partitioning info
is_subpart
is_subpart
store_length_array Length of fields packed in opt_range_key format
min_val Left edge, field value in opt_range_key format.
max_val Right edge, field value in opt_range_key format.
max_val Right edge, field value in opt_range_key format.
min_len Length of minimum value
max_len Length of maximum value
flags Some combination of NEAR_MIN, NEAR_MAX, NO_MIN_RANGE,
NO_MAX_RANGE.
part_iter Iterator structure to be initialized
@ -191,8 +194,9 @@ typedef struct st_partition_iter
The set of partitions is returned by initializing an iterator in *part_iter
NOTES
There are currently two functions of this type:
There are currently three functions of this type:
- get_part_iter_for_interval_via_walking
- get_part_iter_for_interval_cols_via_map
- get_part_iter_for_interval_via_mapping
RETURN
@ -203,7 +207,9 @@ typedef struct st_partition_iter
typedef int (*get_partitions_in_range_iter)(partition_info *part_info,
bool is_subpart,
uint32 *store_length_array,
uchar *min_val, uchar *max_val,
uint min_len, uint max_len,
uint flags,
PARTITION_ITERATOR *part_iter);