mariadb/include/pars0opt.h
marko 1601bdc38a branches/innodb+: Merge revisions 5091:5143 from branches/zip:
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  r5092 | marko | 2009-05-25 09:54:17 +0300 (Mon, 25 May 2009) | 1 line

  branches/zip: Adjust some function comments after r5091.
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  r5100 | marko | 2009-05-25 12:09:45 +0300 (Mon, 25 May 2009) | 1 line

  branches/zip: Split some long lines that were introduced in r5091.
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  r5101 | marko | 2009-05-25 12:42:47 +0300 (Mon, 25 May 2009) | 2 lines

  branches/zip: Introduce the macro TEMP_INDEX_PREFIX_STR.
  This is to avoid triggering an error in Doxygen.
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  r5102 | marko | 2009-05-25 13:47:14 +0300 (Mon, 25 May 2009) | 1 line

  branches/zip: Add missing file comments.
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  r5103 | marko | 2009-05-25 13:52:29 +0300 (Mon, 25 May 2009) | 10 lines

  branches/zip: Add @file comments, and convert decorative
  /*********************************
  comments to Doxygen /** style like this:
  /*****************************//**

  This conversion was performed by the following command:

  perl -i -e 'while(<ARGV>){if (m|^/\*{30}\**$|) {
  s|\*{4}$|//**| if ++$com>1; $_ .= "\@file $ARGV\n" if $com==2}
  print; if(eof){$.=0;undef $com}}' */*[ch] include/univ.i
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  r5104 | marko | 2009-05-25 14:39:07 +0300 (Mon, 25 May 2009) | 2 lines

  branches/zip: Revert ut0auxconf_* to r5102,
  that is, make Doxygen ignore these test programs.
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  r5105 | marko | 2009-05-25 14:52:20 +0300 (Mon, 25 May 2009) | 2 lines

  branches/zip: Enclose some #error checks inside #ifndef DOXYGEN
  to prevent bogus Doxygen errors.
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  r5106 | marko | 2009-05-25 16:09:24 +0300 (Mon, 25 May 2009) | 2 lines

  branches/zip: Add some Doxygen comments, mainly to structs, typedefs,
  macros and global variables.  Many more to go.
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  r5108 | marko | 2009-05-26 00:32:35 +0300 (Tue, 26 May 2009) | 2 lines

  branches/zip: lexyy.c: Remove the inadvertently added @file directive.
  There is nothing for Doxygen to see in this file, move along.
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  r5125 | marko | 2009-05-26 16:28:49 +0300 (Tue, 26 May 2009) | 3 lines

  branches/zip: Add some Doxygen comments for many structs, typedefs,
  #defines and global variables.  Many are still missing.
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  r5134 | marko | 2009-05-27 09:08:43 +0300 (Wed, 27 May 2009) | 1 line

  branches/zip: Add some Doxygen @return comments.
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  r5139 | marko | 2009-05-27 10:01:40 +0300 (Wed, 27 May 2009) | 1 line

  branches/zip: Add Doxyfile.
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  r5143 | marko | 2009-05-27 10:57:25 +0300 (Wed, 27 May 2009) | 3 lines

  branches/zip: buf0buf.h, Doxyfile: Fix the Doxygen translation.
  @defgroup is for source code modules, not for field groups.
  Tell Doxygen to expand the UT_LIST declarations.
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2009-05-27 09:52:16 +00:00

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C

/*****************************************************************************
Copyright (c) 1997, 2009, Innobase Oy. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
/**************************************************//**
@file include/pars0opt.h
Simple SQL optimizer
Created 12/21/1997 Heikki Tuuri
*******************************************************/
#ifndef pars0opt_h
#define pars0opt_h
#include "univ.i"
#include "que0types.h"
#include "usr0types.h"
#include "pars0sym.h"
#include "dict0types.h"
#include "row0sel.h"
/*******************************************************************//**
Optimizes a select. Decides which indexes to tables to use. The tables
are accessed in the order that they were written to the FROM part in the
select statement. */
UNIV_INTERN
void
opt_search_plan(
/*============*/
sel_node_t* sel_node); /*!< in: parsed select node */
/*******************************************************************//**
Looks for occurrences of the columns of the table in the query subgraph and
adds them to the list of columns if an occurrence of the same column does not
already exist in the list. If the column is already in the list, puts a value
indirection to point to the occurrence in the column list, except if the
column occurrence we are looking at is in the column list, in which case
nothing is done. */
UNIV_INTERN
void
opt_find_all_cols(
/*==============*/
ibool copy_val, /*!< in: if TRUE, new found columns are
added as columns to copy */
dict_index_t* index, /*!< in: index to use */
sym_node_list_t* col_list, /*!< in: base node of a list where
to add new found columns */
plan_t* plan, /*!< in: plan or NULL */
que_node_t* exp); /*!< in: expression or condition */
/********************************************************************//**
Prints info of a query plan. */
UNIV_INTERN
void
opt_print_query_plan(
/*=================*/
sel_node_t* sel_node); /*!< in: select node */
#ifndef UNIV_NONINL
#include "pars0opt.ic"
#endif
#endif