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join_nested.test, join_nested.result:

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new file
Many files:
  Nested joins added.


sql/item_cmpfunc.h:
  Nested joins added.
sql/item_func.h:
  Nested joins added.
sql/sql_base.cc:
  Nested joins added.
sql/sql_lex.cc:
  Nested joins added.
sql/sql_lex.h:
  Nested joins added.
sql/sql_parse.cc:
  Nested joins added.
sql/sql_select.cc:
  Nested joins added.
sql/sql_select.h:
  Nested joins added.
sql/sql_yacc.yy:
  Nested joins added.
sql/table.h:
  Nested joins added.
mysql-test/r/join_outer.result:
  Nested joins added.
mysql-test/r/select.result:
  Nested joins added.
This commit is contained in:
unknown
2004-06-10 22:27:21 -07:00
parent d4898d174c
commit cd23d6e37a
14 changed files with 3148 additions and 239 deletions
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15
sql/sql_select.h
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@@ -73,7 +73,6 @@ typedef struct st_join_cache {
/*
** The structs which holds the join connections and join states
*/
enum join_type { JT_UNKNOWN,JT_SYSTEM,JT_CONST,JT_EQ_REF,JT_REF,JT_MAYBE_REF,
JT_ALL, JT_RANGE, JT_NEXT, JT_FT, JT_REF_OR_NULL,
JT_UNIQUE_SUBQUERY, JT_INDEX_SUBQUERY, JT_INDEX_MERGE};
@@ -86,7 +85,13 @@ typedef struct st_join_table {
SQL_SELECT *select;
COND *select_cond;
QUICK_SELECT_I *quick;
Item *on_expr;
Item *on_expr; /* associated on expression */
st_join_table *first_inner; /* first inner table for including outerjoin */
bool found; /* true after all matches or null complement */
bool not_null_compl;/* true before null complement is added */
st_join_table *last_inner; /* last table table for embedding outer join */
st_join_table *first_upper; /* first inner table for embedding outer join */
st_join_table *first_unmatched; /* used for optimization purposes only */
const char *info;
byte *null_ref_key;
int (*read_first_record)(struct st_join_table *tab);
@@ -196,8 +201,10 @@ class JOIN :public Sql_alloc
ORDER *order, *group_list, *proc_param; //hold parameters of mysql_select
COND *conds; // ---"---
Item *conds_history; // store WHERE for explain
TABLE_LIST *tables_list; //hold 'tables' parameter of mysql_selec
TABLE_LIST *tables_list; //hold 'tables' parameter of mysql_select
List<TABLE_LIST> *join_list; // list of joined tables in reverse order
SQL_SELECT *select; //created in optimisation phase
JOIN_TAB *return_tab; //used only for outer joins
Item **ref_pointer_array; //used pointer reference for this select
// Copy of above to be used with different lists
Item **items0, **items1, **items2, **items3, **current_ref_pointer_array;
@@ -221,6 +228,7 @@ class JOIN :public Sql_alloc
table= 0;
tables= 0;
const_tables= 0;
join_list= 0;
sort_and_group= 0;
first_record= 0;
do_send_rows= 1;
@@ -251,6 +259,7 @@ class JOIN :public Sql_alloc
fields_list= fields_arg;
error= 0;
select= 0;
return_tab= 0;
ref_pointer_array= items0= items1= items2= items3= 0;
ref_pointer_array_size= 0;
zero_result_cause= 0;