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00021 #include <config.h>
00022 #include <drizzled/show.h>
00023 #include <drizzled/session.h>
00024 #include <drizzled/statement/update.h>
00025
00026 namespace drizzled
00027 {
00028
00029 bool statement::Update::execute()
00030 {
00031 TableList *first_table= (TableList *) lex().select_lex.table_list.first;
00032 TableList *all_tables= lex().query_tables;
00033 assert(first_table == all_tables && first_table != 0);
00034 Select_Lex *select_lex= &lex().select_lex;
00035 Select_Lex_Unit *unit= &lex().unit;
00036 if (update_precheck(&session(), all_tables))
00037 {
00038 return true;
00039 }
00040 assert(select_lex->offset_limit == 0);
00041 unit->set_limit(select_lex);
00042 bool res= update_query(&session(),
00043 all_tables,
00044 select_lex->item_list,
00045 lex().value_list,
00046 select_lex->where,
00047 select_lex->order_list.elements,
00048 (Order *) select_lex->order_list.first,
00049 unit->select_limit_cnt,
00050 lex().duplicates,
00051 lex().ignore);
00052 return res;
00053 }
00054
00055 }
00056