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  • Committer: Stewart Smith
  • Date: 2011-01-14 05:19:11 UTC
  • mto: (2086.1.3 build)
  • mto: This revision was merged to the branch mainline in revision 2087.
  • Revision ID: stewart@flamingspork.com-20110114051911-blfrsfy6yjvjg9rs
add note that impl of DROP INDEX should be documented

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drizzled/sql_delete.cc
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  Multi-table deletes were introduced by Monty and Sinisa
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*/
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#include <config.h>
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#include <drizzled/sql_select.h>
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#include <drizzled/error.h>
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#include <drizzled/probes.h>
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#include <drizzled/sql_parse.h>
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#include <drizzled/sql_base.h>
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#include <drizzled/lock.h>
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#include <drizzled/probes.h>
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#include <drizzled/optimizer/range.h>
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#include <drizzled/records.h>
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#include <drizzled/internal/iocache.h>
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#include <drizzled/transaction_services.h>
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#include <drizzled/filesort.h>
 
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#include "config.h"
 
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#include "drizzled/sql_select.h"
 
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#include "drizzled/error.h"
 
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#include "drizzled/probes.h"
 
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#include "drizzled/sql_parse.h"
 
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#include "drizzled/sql_base.h"
 
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#include "drizzled/lock.h"
 
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#include "drizzled/probes.h"
 
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#include "drizzled/optimizer/range.h"
 
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#include "drizzled/records.h"
 
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#include "drizzled/internal/iocache.h"
 
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#include "drizzled/transaction_services.h"
 
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#include "drizzled/filesort.h"
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namespace drizzled
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{
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  bool          const_cond_result;
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  ha_rows       deleted= 0;
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  uint32_t usable_index= MAX_KEY;
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  Select_Lex   *select_lex= &session->getLex()->select_lex;
 
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  Select_Lex   *select_lex= &session->lex->select_lex;
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  Session::killed_state_t killed_status= Session::NOT_KILLED;
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  if (session->openTablesLock(table_list))
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                    fields, all_fields, (Order*) order->first))
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      {
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        delete select;
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        free_underlaid_joins(session, &session->getLex()->select_lex);
 
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        free_underlaid_joins(session, &session->lex->select_lex);
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        DRIZZLE_DELETE_DONE(1, 0);
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        return true;
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  const_cond= (!conds || conds->const_item());
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  select_lex->no_error= session->getLex()->ignore;
 
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  select_lex->no_error= session->lex->ignore;
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  const_cond_result= const_cond && (!conds || conds->val_int());
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  if (session->is_error())
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     * lp bug# 439719
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     */
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    session->main_da.reset_diagnostics_area();
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    session->my_ok((ha_rows) session->rowCount());
 
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    session->my_ok((ha_rows) session->row_count_func);
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    /*
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      We don't need to call reset_auto_increment in this case, because
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      mysql_truncate always gives a NULL conds argument, hence we never
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                                                    examined_rows)) == HA_POS_ERROR)
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      {
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        delete select;
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        free_underlaid_joins(session, &session->getLex()->select_lex);
 
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        free_underlaid_joins(session, &session->lex->select_lex);
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        DRIZZLE_DELETE_DONE(1, 0);
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        return true;
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  free_underlaid_joins(session, select_lex);
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  DRIZZLE_DELETE_DONE((error >= 0 || session->is_error()), deleted);
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  if (error < 0 || (session->getLex()->ignore && !session->is_fatal_error))
 
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  if (error < 0 || (session->lex->ignore && !session->is_fatal_error))
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  {
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    session->row_count_func= deleted;
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    /**
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     * lp bug# 439719
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     */
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    session->main_da.reset_diagnostics_area();    
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    session->my_ok((ha_rows) session->rowCount());
 
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    session->my_ok((ha_rows) session->row_count_func);
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  }
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  session->status_var.deleted_row_count+= deleted;
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*/
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int prepare_delete(Session *session, TableList *table_list, Item **conds)
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{
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  Select_Lex *select_lex= &session->getLex()->select_lex;
 
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  Select_Lex *select_lex= &session->lex->select_lex;
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  List<Item> all_fields;
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  session->getLex()->allow_sum_func= 0;
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  if (setup_tables_and_check_access(session, &session->getLex()->select_lex.context,
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                                    &session->getLex()->select_lex.top_join_list,
 
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  session->lex->allow_sum_func= 0;
 
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  if (setup_tables_and_check_access(session, &session->lex->select_lex.context,
 
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                                    &session->lex->select_lex.top_join_list,
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                                    table_list,
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                                    &select_lex->leaf_tables, false) ||
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      session->setup_conds(table_list, conds))
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  uint64_t save_options= session.options;
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  table_list->lock_type= TL_WRITE;
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  session.options&= ~(OPTION_BEGIN | OPTION_NOT_AUTOCOMMIT);
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  init_select(session.getLex());
 
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  init_select(session.lex);
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  error= delete_query(&session, table_list, (COND*) 0, (SQL_LIST*) 0,
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                      HA_POS_ERROR, 0L, true);
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  /*
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    Safety, in case the engine ignored ha_enable_transaction(false)
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    above. Also clears session->transaction.*.
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  */
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  error= transaction_services.autocommitOrRollback(session, error);
 
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  error= transaction_services.autocommitOrRollback(&session, error);
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  session.options= save_options;
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  return error;