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Viewing changes to drizzled/optimizer/table_read_plan.h

  • Committer: Brian Aker
  • Date: 2010-10-08 20:13:50 UTC
  • mfrom: (1823.1.3 trunk-drizzle)
  • Revision ID: brian@tangent.org-20101008201350-bmjpgakk12zmyw10
Overall merge of Padraig

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drizzled/optimizer/table_read_plan.h
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namespace drizzled
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{
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struct st_ror_scan_info;
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namespace optimizer
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{
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class Parameter;
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class SEL_ARG;
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class SEL_TREE;
 
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class RorScanInfo;
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/*
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  Table rows retrieval plan. Range optimizer creates QuickSelectInterface-derived
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                                   memory::Root *parent_alloc);
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  /* Array of pointers to ROR range scans used in this intersection */
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  struct st_ror_scan_info **first_scan;
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  struct st_ror_scan_info **last_scan; /* End of the above array */
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  struct st_ror_scan_info *cpk_scan;  /* Clustered PK scan, if there is one */
 
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  RorScanInfo **first_scan;
 
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  RorScanInfo **last_scan; /* End of the above array */
 
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  RorScanInfo *cpk_scan;  /* Clustered PK scan, if there is one */
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  bool is_covering; /* true if no row retrieval phase is necessary */
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  double index_scan_costs; /* SUM(cost(index_scan)) */