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  • Committer: Patrick Crews
  • Date: 2010-07-19 23:41:14 UTC
  • mfrom: (1662.1.5 build)
  • Revision ID: gleebix@gmail.com-20100719234114-fvjg69on0x9tq0x6
Merge optimizer.test fix

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drizzled/item.h
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   * cost Item::execution_cost(),
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   * where 'cost' is either 'double' or some structure of various cost
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   * parameters.
 
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   *
 
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   *NOTE
 
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   *   This function is now used to prevent evaluation of materialized IN
 
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   *   subquery predicates before it is allowed. grep for
 
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   *   DontEvaluateMaterializedSubqueryTooEarly to see the uses.
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   */
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  virtual bool is_expensive();
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