database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-01 03:47:19 +03:00
Code Activity

Merge 4.1 to 5.0

Browse Source
This commit is contained in:
pem@mysql.com
2003-12-01 16:14:40 +01:00
parent 82270288de f266cdabab
commit 6e717133c5
270 changed files with 4938 additions and 2632 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
sql/sql_select.h
View File

@ -166,11 +166,23 @@ class JOIN :public Sql_alloc
JOIN *tmp_join; // copy of this JOIN to be used with temporary tables
ROLLUP rollup; // Used with rollup
bool select_distinct, //Is select distinct?
no_order, simple_order, simple_group,
skip_sort_order, need_tmp,
hidden_group_fields,
buffer_result;
bool select_distinct; // Set if SELECT DISTINCT
/*
simple_xxxxx is set if ORDER/GROUP BY doesn't include any references
to other tables than the first non-constant table in the JOIN.
It's also set if ORDER/GROUP BY is empty.
*/
bool simple_order, simple_group;
/*
Is set only in case if we have a GROUP BY clause
and no ORDER BY after constant elimination of 'order'.
*/
bool no_order;
/* Is set if we have a GROUP BY and we have ORDER BY on a constant. */
bool skip_sort_order;
bool need_tmp, hidden_group_fields, buffer_result;
DYNAMIC_ARRAY keyuse;
Item::cond_result cond_value;
List<Item> all_fields; // to store all fields that used in query
@ -195,14 +207,14 @@ class JOIN :public Sql_alloc
bool union_part; // this subselect is part of union
bool optimized; // flag to avoid double optimization in EXPLAIN
JOIN(THD *thd_arg, List<Item> &fields, ulong select_options_arg,
JOIN(THD *thd_arg, List<Item> &fields_arg, ulong select_options_arg,
select_result *result_arg)
:fields_list(fields)
:fields_list(fields_arg)
{
init(thd_arg, fields, select_options_arg, result_arg);
init(thd_arg, fields_arg, select_options_arg, result_arg);
}
void init(THD *thd_arg, List<Item> &fields, ulong select_options_arg,
void init(THD *thd_arg, List<Item> &fields_arg, ulong select_options_arg,
select_result *result_arg)
{
join_tab= join_tab_save= 0;
@ -235,8 +247,8 @@ class JOIN :public Sql_alloc
hidden_group_fields= 0; /*safety*/
buffer_result= test(select_options & OPTION_BUFFER_RESULT) &&
!test(select_options & OPTION_FOUND_ROWS);
all_fields= fields;
fields_list= fields;
all_fields= fields_arg;
fields_list= fields_arg;
error= 0;
select= 0;
ref_pointer_array= items0= items1= items2= items3= 0;
@ -244,7 +256,7 @@ class JOIN :public Sql_alloc
zero_result_cause= 0;
optimized= 0;
fields_list= fields;
fields_list= fields_arg;
bzero((char*) &keyuse,sizeof(keyuse));
tmp_table_param.copy_field=0;
tmp_table_param.end_write_records= HA_POS_ERROR;
@ -254,7 +266,7 @@ class JOIN :public Sql_alloc
int prepare(Item ***rref_pointer_array, TABLE_LIST *tables, uint wind_num,
COND *conds, uint og_num, ORDER *order, ORDER *group,
Item *having, ORDER *proc_param, SELECT_LEX *select,
SELECT_LEX_UNIT *unit, bool tables_and_fields_initied);
SELECT_LEX_UNIT *unit);
int optimize();
int reinit();
void exec();