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Add direct aggregates

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Spider patches 026 (MDEV-7723), 031 (MDEV-7727) and 058 (MDEV-12532)

This allows the storage engine to internally compute sum and count
operations.

- Enhance sum items to be able to store the sum value directly.
- return_record_by_parent() is enabled in spider as
  HANDLER_HAS_DIRECT_AGGREGATE is defined
- Added spd_environ.h to spider. This is loaded first to ensure that all
  MariaDB specific defines that are used by include files are properly
  defined.
- This code is tested by the existing spider tests direct_aggregate.test
  and direct_aggregate_part.test and also partition.test
This commit is contained in:
Monty
2017-09-09 16:20:55 +03:00
parent 6f5a7e9227
commit da26d16dd1
28 changed files with 383 additions and 100 deletions
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2
sql/handler.h
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@ -3499,7 +3499,7 @@ public:
return 0;
}
virtual void set_part_info(partition_info *part_info) {return;}
virtual void return_record_by_parent() {return;}
virtual void return_record_by_parent() { return; }
virtual ulong index_flags(uint idx, uint part, bool all_parts) const =0;