Final patch
-----------
This WL is about using this bitmap in all parts of the partition handler.
Thus for:
rnd_init/rnd_next
index_init/index_next and all other variants of index scans
read_range_... the various range scans implemented in the partition handler.
Also use those bitmaps in the various other calls that currently loop over all
partitions.
mysql-test/r/partition_pruning.result:
WL# 2986
New results reflecting bitmap being used to determine if a partition is to be
included
mysql-test/t/partition_pruning.test:
WL# 2986
New tests to show bitmap being used in ha_partition
sql/ha_partition.cc:
WL# 2986
Used work from 2682 and removed the partition select code.
Added do {} while loop to any iteration over partitions to now utilise
m_part_info->used_partitions bitmap to determine if a partition should be
used.
sql/ha_partition.h:
WL# 2986
Removed unused member
sql/handler.h:
WL# 2986
Removed unused member
sql/opt_range.cc:
WL# 2986
Added bitmap_clear_all to clear bitmap prior to pruning
DBUG code for testing
sql/sql_partition.cc:
WL# 2986
Changed < to <=, which fixes the problem with edge cases going awry.
- post-...-post review fixes
- Added "integer range walking" that allows to do partition pruning for "a <=? t.field <=? b"
by finding used partitions for a, a+1, a+2, ..., b-1, b.
mysql-test/r/partition_pruning.result:
WL#2985 "Partition Pruning": tests for "integer range walking"
mysql-test/t/partition.test:
WL#2985 "Partition Pruning": post-review fixes
mysql-test/t/partition_pruning.test:
WL#2985 "Partition Pruning": tests for "integer range walking"
sql/handler.h:
WL#2985 "Partition Pruning": "integer range walking":
- class partition_info now has pointers to "partitioning interval analysis" functions
- added "partition set iterator" definitions.
sql/opt_range.cc:
WL#2985 "Partition Pruning": "integer range walking":
- Switched to use "partitioning interval analysis" functions
- Fixed two problems in find_used_partitions() that occur on complicated WHERE clauses.
sql/sql_partition.cc:
WL#2985 "Partition Pruning": "integer range walking":
- Added "partitioning interval analysis" functions: get_part_iter_for_interval_via_mapping,
get_part_iter_for_interval_via_walking,
- Added appropriate partition-set-iterator implementations
- Added a function to set up Partitioning Interval Analysis-related fields in partition_info.
sql/sql_select.cc:
WL#2985 "Partition pruning": added comments.
- Added more comments.
- Added a RANGE_OPT_PARAM::remove_jump_scans flag that disables construction of index_merge
SEL_TREEs that represent unusable conditions like "key1part1<c1 OR key2part2<c2"
- make prune_partitions() function handle the case where range analysis produces a list of
index_merge trees (it turned out that this is possible, appropriate test case added).
- Other small fixes.
mysql-test/r/partition_pruning.result:
WL#2985 "Partition Pruning": post-review fixes: more test cases
mysql-test/t/partition_pruning.test:
WL#2985 "Partition Pruning": post-review fixes: more test cases
sql/opt_range.cc:
WL#2985 "Partition Pruning": post-review fixes:
- Added more comments.
- Fix the debug printouts
- Added a RANGE_OPT_PARAM::remove_jump_scans flag that disables construction of index_merge
SEL_TREEs that represent unusable conditions like "key1part1<c1 OR key2part2<c2"
- make prune_partitions() function handle the case where range analysis produces a list of
index_merge trees (it turned out that this is possible, appropriate test case added).
sql/sql_partition.cc:
WL#2985 "Partition Pruning": post-review fixes: make requested edits in comments.
sql/table.h:
WL#2985 "Partition Pruning": post-review fixes: added bool TABLE::no_partitions_used
(this change was missed when making the original cset)
