#
# MDEV-19162: anonymous derived tables part
#
set @save_sql_mode=@@sql_mode;
set session sql_mode=ORACLE;
SELECT * FROM (SELECT 1 FROM DUAL), (SELECT 2 FROM DUAL);
Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
def			__2	1	1	3	1	1	N	32769	0	63
def			__3	2	2	3	1	1	N	32769	0	63
1	2
1	2
create table t1 (a int);
insert into t1 values (2),(3);
create table t2 (a int);
insert into t2 values (2),(3);
select t1.a from t1, (select * from t2 where t2.a<= 2);
Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
def	test	t1	t1	a	a	3	11	1	Y	32768	0	63
a
2
3
select t1.a, b from t1, (select a as b from t2 where t2.a<= 2);
Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
def	test	t1	t1	a	a	3	11	1	Y	32768	0	63
def	test	__2	__2	b	b	3	11	1	Y	32768	0	63
a	b
2	2
3	2
select t1.a, b from t1, (select max(a) as b from t2);
Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
def	test	t1	t1	a	a	3	11	1	Y	32768	0	63
def		t2	__2	b	b	3	11	1	Y	32768	0	63
a	b
2	3
3	3
explain extended
select t1.a, b from t1, (select max(a) as b from t2);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	100.00	
1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	2	100.00	Using join buffer (flat, BNL join)
2	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	2	100.00	
Warnings:
Note	1003	/* select#1 */ select "test"."t1"."a" AS "a","__2"."b" AS "b" from "test"."t1" join (/* select#2 */ select max("test"."t2"."a") AS "b" from "test"."t2") "__2"
select * from (select tt.* from (select * from t1) as tt) where tt.a > 0;
ERROR 42S22: Unknown column 'tt.a' in 'where clause'
select * from (select tt.* from (select * from t1) as tt) where a > 0;
a
2
3
create view v1 as select t1.a, b from t1, (select max(a) as b from t2);
select * from v1;
a	b
2	3
3	3
create procedure p1
as
begin
select t1.a, b from t1, (select max(a) as b from t2);
end/
call p1;
a	b
2	3
3	3
SET sql_mode=default;
select * from v1;
a	b
2	3
3	3
show create view v1;
View	Create View	character_set_client	collation_connection
v1	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a`,`__3`.`b` AS `b` from (`t1` join (select max(`t2`.`a`) AS `b` from `t2`) `__3`)	latin1	latin1_swedish_ci
call p1;
a	b
2	3
3	3
show create procedure p1;
Procedure	sql_mode	Create Procedure	character_set_client	collation_connection	Database Collation
p1	PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER,SIMULTANEOUS_ASSIGNMENT	CREATE DEFINER="root"@"localhost" PROCEDURE "p1"()
as
begin
select t1.a, b from t1, (select max(a) as b from t2);
end	latin1	latin1_swedish_ci	latin1_swedish_ci
drop view v1;
drop procedure p1;
drop table t1,t2;
set session sql_mode=@save_sql_mode;