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Merge dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.0-opt

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into  dl145s.mysql.com:/data/bk/team_tree_merge/MERGE/mysql-5.1-opt
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gkodinov@dl145s.mysql.com
2006-10-19 16:43:46 +02:00
parent ea8ba03556 c77fae407b
commit aaed398254
39 changed files with 1022 additions and 167 deletions
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15
sql/sql_select.h
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@@ -321,6 +321,18 @@ public:
bool union_part; // this subselect is part of union
bool optimized; // flag to avoid double optimization in EXPLAIN
/*
storage for caching buffers allocated during query execution.
These buffers allocations need to be cached as the thread memory pool is
cleared only at the end of the execution of the whole query and not caching
allocations that occur in repetition at execution time will result in
excessive memory usage.
*/
SORT_FIELD *sortorder; // make_unireg_sortorder()
TABLE **table_reexec; // make_simple_join()
JOIN_TAB *join_tab_reexec; // make_simple_join()
/* end of allocation caching storage */
JOIN(THD *thd_arg, List<Item> &fields_arg, ulonglong select_options_arg,
select_result *result_arg)
:fields_list(fields_arg)
@@ -346,6 +358,9 @@ public:
examined_rows= 0;
exec_tmp_table1= 0;
exec_tmp_table2= 0;
sortorder= 0;
table_reexec= 0;
join_tab_reexec= 0;
thd= thd_arg;
sum_funcs= sum_funcs2= 0;
procedure= 0;