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390.1.2
by Monty Taylor
Fixed copyright headers in drizzled/ |
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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327.2.4
by Brian Aker
Refactoring table.h |
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#ifndef DRIZZLED_NATURAL_JOIN_COLUMN_H
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#define DRIZZLED_NATURAL_JOIN_COLUMN_H
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520.8.6
by Monty Taylor
Removed handler from common_includes. |
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#include <drizzled/sql_alloc.h> |
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327.2.4
by Brian Aker
Refactoring table.h |
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class Field; |
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class Field_translator; |
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520.8.6
by Monty Taylor
Removed handler from common_includes. |
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class TableList; |
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327.2.4
by Brian Aker
Refactoring table.h |
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/*
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Column reference of a NATURAL/USING join. Since column references in
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joins can be both from views and stored tables, may point to either a
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Field (for tables), or a Field_translator (for views).
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*/
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class Natural_join_column: public Sql_alloc |
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{
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public: |
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Field *table_field; /* Column reference of table or temp view. */ |
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TableList *table_ref; /* Original base table/view reference. */ |
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/*
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True if a common join column of two NATURAL/USING join operands. Notice
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that when we have a hierarchy of nested NATURAL/USING joins, a column can
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be common at some level of nesting but it may not be common at higher
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levels of nesting. Thus this flag may change depending on at which level
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we are looking at some column.
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*/
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bool is_common; |
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public: |
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Natural_join_column(Field_translator *field_param, TableList *tab); |
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Natural_join_column(Field *field_param, TableList *tab); |
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const char *name(); |
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520.1.22
by Brian Aker
Second pass of thd cleanup |
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Item *create_item(Session *session); |
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327.2.4
by Brian Aker
Refactoring table.h |
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Field *field(); |
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const char *table_name(); |
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const char *db_name(); |
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};
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#endif /* DRIZZLED_NATURAL_JOIN_COLUMN_H */ |