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Code Activity

Adding multi_range_read support to partitions

Browse Source 
Other things:
- Cleanup of allocated bitmaps done in open(), which
  simplifies init_partition_bitmaps()
- Add needed defines in ha_spider.cc to enable new spider code
- Fixed some DBUG_PRINT() to be consistent with normal code
- Removed end space
- The changes in test cases partition_innodb, partition_range,
  partition_pruning etc are becasue partitions can now more exactly
  calculate the number of rows in a range.

Contains spider patches:
014,015,023,033,035,037,040,042,044,045,049,050,051,053,059
This commit is contained in:
Monty
2017-07-05 18:20:06 +03:00
parent d5268a610a
commit 8eeb689e9f
26 changed files with 2486 additions and 224 deletions
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4
mysql-test/r/partition_range.result
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@ -961,7 +961,7 @@ INSERT INTO t2 SELECT * FROM t1;
# plans should be identical
EXPLAIN SELECT a, MAX(b) FROM t1 WHERE a IN (10,100) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 5 NULL 1 Using where; Using index for group-by
1 SIMPLE t1 range a a 5 NULL 2 Using where; Using index
EXPLAIN SELECT a, MAX(b) FROM t2 WHERE a IN (10,100) GROUP BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 range a a 5 NULL 2 Using where; Using index for group-by
@ -972,7 +972,7 @@ a MAX(b)
# Should be no more than 4 reads.
SHOW status LIKE 'handler_read_key';
Variable_name Value
Handler_read_key 4
Handler_read_key 2
FLUSH status;
SELECT a, MAX(b) FROM t2 WHERE a IN (10, 100) GROUP BY a;
a MAX(b)