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MWL#67: MRR backport

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- Make index condition pushdown be controlled by an @@optimizer_switch flag,
  not by @@engine_condition_pushdown
- Make MRR buffer size be controlled by @@mrr_buffer_size, not 
  by @@read_rnd_buffer_size
- Move parts of code to separate files
- Code cleanup
- Add --sorted_result to some SELECTs in tests.
This commit is contained in:
Sergey Petrunya
2009-12-22 15:33:21 +03:00
parent 19f6f52a21
commit da5edf5057
33 changed files with 1202 additions and 1151 deletions
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sql/sql_class.h
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@ -339,6 +339,7 @@ struct system_variables
ulong query_cache_type;
ulong read_buff_size;
ulong read_rnd_buff_size;
ulong mrr_buff_size;
ulong div_precincrement;
ulong sortbuff_size;
ulong thread_handling;