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  • Committer: Joseph Daly
  • Date: 2010-10-31 20:44:18 UTC
  • mfrom: (1894 build)
  • mto: This revision was merged to the branch mainline in revision 1900.
  • Revision ID: skinny.moey@gmail.com-20101031204418-dq03jokakmudu3iu
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    res_field_type= DRIZZLE_TYPE_VARCHAR;
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    maybe_null= 0;
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  }
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  virtual ~subselect_engine() {}; // to satisfy compiler
 
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  virtual ~subselect_engine() {} // to satisfy compiler
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  virtual void cleanup()= 0;
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  /*
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  enum Item_result type() { return res_type; }
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  enum_field_types field_type() { return res_field_type; }
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  virtual void exclude()= 0;
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  virtual bool may_be_null() { return maybe_null; };
 
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  virtual bool may_be_null() { return maybe_null; }
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  virtual table_map upper_select_const_tables()= 0;
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  static table_map calc_const_tables(TableList *);
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  virtual void print(String *str, enum_query_type query_type)= 0;