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Added thread variable max_seeks_for_key

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Change optimizer to prefer key lookups before table scan
Change table scans to be done after tables with constrains on scanned table
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monty@mashka.mysql.fi
2003-06-27 03:04:54 +03:00
parent 5f556f11e0
commit 34919a03c4
17 changed files with 114 additions and 65 deletions
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sql/sql_class.h
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@ -310,6 +310,7 @@ struct system_variables
ulong tx_isolation;
ulong table_type;
ulong default_week_format;
ulong max_seeks_for_key;
my_bool log_warnings;
my_bool low_priority_updates;