Commit 1932ac9a authored by unknown's avatar unknown

Merge olga.mysql.com:/home/igor/mysql-5.0-opt

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug26159

parents 3e4f834d 5e42c0de
...@@ -1262,8 +1262,7 @@ from information_schema.tables ...@@ -1262,8 +1262,7 @@ from information_schema.tables
order by object_schema; order by object_schema;
explain select * from v1; explain select * from v1;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found 1 SIMPLE tables ALL NULL NULL NULL NULL 2 Using filesort
2 DERIVED tables ALL NULL NULL NULL NULL 2 Using filesort
explain select * from (select table_name from information_schema.tables) as a; explain select * from (select table_name from information_schema.tables) as a;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found 1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
......
...@@ -3078,4 +3078,43 @@ b ...@@ -3078,4 +3078,43 @@ b
2 2
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
create table t1(f1 int, f2 int);
insert into t1 values(1,2),(1,3),(1,1),(2,3),(2,1),(2,2);
select * from t1;
f1 f2
1 2
1 3
1 1
2 3
2 1
2 2
create view v1 as select * from t1 order by f2;
select * from v1;
f1 f2
1 1
2 1
1 2
2 2
1 3
2 3
explain extended select * from v1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
Warnings:
Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2` from `test`.`t1` order by `test`.`t1`.`f2`
select * from v1 order by f1;
f1 f2
1 1
1 2
1 3
2 1
2 2
2 3
explain extended select * from v1 order by f1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 6 Using filesort
Warnings:
Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2` from `test`.`t1` order by `test`.`t1`.`f1`,`test`.`t1`.`f2`
drop view v1;
drop table t1;
End of 5.0 tests. End of 5.0 tests.
...@@ -3024,4 +3024,18 @@ SELECT * FROM t2; ...@@ -3024,4 +3024,18 @@ SELECT * FROM t2;
DROP VIEW v1; DROP VIEW v1;
DROP TABLE t1,t2; DROP TABLE t1,t2;
#
# Bug#12122: Views with ORDER BY can't be resolved using MERGE algorithm.
#
create table t1(f1 int, f2 int);
insert into t1 values(1,2),(1,3),(1,1),(2,3),(2,1),(2,2);
select * from t1;
create view v1 as select * from t1 order by f2;
select * from v1;
explain extended select * from v1;
select * from v1 order by f1;
explain extended select * from v1 order by f1;
drop view v1;
drop table t1;
--echo End of 5.0 tests. --echo End of 5.0 tests.
...@@ -1751,7 +1751,6 @@ bool st_lex::can_be_merged() ...@@ -1751,7 +1751,6 @@ bool st_lex::can_be_merged()
} }
return (selects_allow_merge && return (selects_allow_merge &&
select_lex.order_list.elements == 0 &&
select_lex.group_list.elements == 0 && select_lex.group_list.elements == 0 &&
select_lex.having == 0 && select_lex.having == 0 &&
select_lex.with_sum_func == 0 && select_lex.with_sum_func == 0 &&
......
...@@ -1263,6 +1263,7 @@ bool mysql_make_view(THD *thd, File_parser *parser, TABLE_LIST *table, ...@@ -1263,6 +1263,7 @@ bool mysql_make_view(THD *thd, File_parser *parser, TABLE_LIST *table,
but it will not be included to SELECT_LEX tree, because it but it will not be included to SELECT_LEX tree, because it
will not be executed will not be executed
*/ */
table->select_lex->order_list.push_back(&lex->select_lex.order_list);
goto ok; goto ok;
} }
......
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