join.result

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

select * from t1,t2 right join t3 on (t2.i=t3.i) order by t1.i,t2.i,t3.i;
i	i	i
1	NULL	4
1	2	2
2	NULL	4
2	2	2
select t1.i,t2.i,t3.i from t2 natural right join t3,t1 order by t1.i,t2.i,t3.i;
i	i	i
1	NULL	4
1	2	2
2	NULL	4
2	2	2
select t1.i,t2.i,t3.i from t2 right join t3 on (t2.i=t3.i),t1 order by t1.i,t2.i,t3.i;
i	i	i
1	NULL	4
1	2	2
2	NULL	4
2	2	2
drop table t1,t2,t3;
create table t1 (c int, b int);
create table t2 (a int, b int);
create table t3 (b int, c int);
create table t4 (y int, c int);
create table t5 (y int, z int);
create table t6 (a int, c int);
insert into t1 values (10,1);
insert into t1 values (3 ,1);
insert into t1 values (3 ,2);
insert into t2 values (2, 1);
insert into t3 values (1, 3);
insert into t3 values (1,10);
insert into t4 values (11,3);
insert into t4 values (2, 3);
insert into t5 values (11,4);
insert into t6 values (2, 3);
create algorithm=merge view v1a as
select * from t1 natural join t2;
create algorithm=merge view v1b(a,b,c) as
select * from t1 natural join t2;
create algorithm=merge view v1c as
select b as a, c as b, a as c from t1 natural join t2;
create algorithm=merge view v1d(b, a, c) as
select a as c, c as b, b as a from t1 natural join t2;
create algorithm=merge view v2a as
select t1.c, t1.b, t2.a from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
create algorithm=merge view v2b as
select t1.c as b, t1.b as a, t2.a as c
from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
create algorithm=merge view v3a as
select * from t1 natural join t2 natural join t3;
create algorithm=merge view v3b as
select * from t1 natural join (t2 natural join t3);
create algorithm=merge view v4 as
select * from v2a natural join v3a;
select * from (t1 natural join t2) natural join (t3 natural join t4);
b	c	a	y
1	3	2	11
1	3	2	2
select * from (t1 natural join t2) natural left join (t3 natural join t4);
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
select * from (t3 natural join t4) natural right join (t1 natural join t2);
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
select * from (t1 natural left join t2) natural left join (t3 natural left join t4);
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
2	3	NULL	NULL
select * from (t4 natural right join t3) natural right join (t2 natural right join t1);
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
2	3	NULL	NULL
select * from t1 natural join t2 natural join t3 natural join t4;
c	b	a	y
3	1	2	11
3	1	2	2
select * from ((t1 natural join t2) natural join t3) natural join t4;
c	b	a	y
3	1	2	11
3	1	2	2
select * from t1 natural join (t2 natural join (t3 natural join t4));
c	b	a	y
3	1	2	11
3	1	2	2
select * from t5 natural right join (t4 natural right join ((t2 natural right join t1) natural right join t3));
y	c	b	a	z
11	3	1	2	4
2	3	1	2	NULL
NULL	10	1	2	NULL
select * from (t1 natural join t2), (t3 natural join t4);
b	c	a	c	b	y
1	10	2	3	1	11
1	10	2	3	1	2
1	3	2	3	1	11
1	3	2	3	1	2
select * from t5 natural join ((t1 natural join t2), (t3 natural join t4));
y	z	b	c	a	c	b
11	4	1	10	2	3	1
11	4	1	3	2	3	1
select * from  ((t1 natural join t2),  (t3 natural join t4)) natural join t5;
y	b	c	a	c	b	z
11	1	10	2	3	1	4
11	1	3	2	3	1	4
select * from t5 natural join ((t1 natural join t2) cross join (t3 natural join t4));
y	z	b	c	a	c	b
11	4	1	10	2	3	1
11	4	1	3	2	3	1
select * from  ((t1 natural join t2) cross join (t3 natural join t4)) natural join t5;
y	b	c	a	c	b	z
11	1	10	2	3	1	4
11	1	3	2	3	1	4
select * from (t1 join t2 using (b)) join (t3 join t4 using (c)) using (c);
c	b	a	b	y
3	1	2	1	11
3	1	2	1	2
select * from (t1 join t2 using (b)) natural join (t3 join t4 using (c));
b	c	a	y
1	3	2	11
1	3	2	2
select a,b,c from (t1 natural join t2) natural join (t3 natural join t4)
where b + 1 = y or b + 10 = y group by b,c,a having min(b) < max(y) order by a;
a	b	c
2	1	3
select * from (t1 natural join t2) natural left join (t3 natural join t4)
where b + 1 = y or b + 10 = y group by b,c,a,y having min(b) < max(y) order by a, y;
b	c	a	y
1	3	2	2
1	3	2	11
select * from (t3 natural join t4) natural right join (t1 natural join t2)
where b + 1 = y or b + 10 = y group by b,c,a,y having min(b) < max(y) order by a, y;
b	c	a	y
1	3	2	2
1	3	2	11
select * from t1 natural join t2 where t1.c > t2.a;
b	c	a
1	10	2
1	3	2
select * from t1 natural join t2 where t1.b > t2.b;
b	c	a
select * from t1 natural left join (t4 natural join t5) where t5.z is not NULL;
c	b	y	z
3	1	11	4
3	2	11	4
select * from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
c	b	a	b	y	c
3	1	2	1	2	3
3	2	2	1	2	3
select * from (t2 join t4 on b + 1 = y) join t1 on t1.c = t4.c;
a	b	y	c	c	b
2	1	2	3	3	1
2	1	2	3	3	2
select * from t1 natural join (t2 join t4 on b + 1 = y);
c	b	a	y
3	1	2	2
select * from (t1 cross join t2) join (t3 cross join t4) on (a < y and t2.b < t3.c);
c	b	a	b	b	c	y	c
10	1	2	1	1	3	11	3
10	1	2	1	1	10	11	3
3	1	2	1	1	3	11	3
3	1	2	1	1	10	11	3
3	2	2	1	1	3	11	3
3	2	2	1	1	10	11	3
select * from (t1, t2) join (t3, t4) on (a < y and t2.b < t3.c);
c	b	a	b	b	c	y	c
10	1	2	1	1	3	11	3
10	1	2	1	1	10	11	3
3	1	2	1	1	3	11	3
3	1	2	1	1	10	11	3
3	2	2	1	1	3	11	3
3	2	2	1	1	10	11	3
select * from (t1 natural join t2) join (t3 natural join t4) on a = y;
b	c	a	c	b	y
1	10	2	3	1	2
1	3	2	3	1	2
select * from ((t3 join (t1 join t2 on c > a) on t3.b < t2.a) join t4 on y > t1.c) join t5 on z = t1.b + 3;
b	c	c	b	a	b	y	c	y	z
1	3	10	1	2	1	11	3	11	4
1	10	10	1	2	1	11	3	11	4
1	3	3	1	2	1	11	3	11	4
1	10	3	1	2	1	11	3	11	4
select * from t1 natural join t2 where t1.b > 0;
b	c	a
1	10	2
1	3	2
select * from t1 natural join (t4 natural join t5) where t4.y > 7;
c	b	y	z
3	1	11	4
3	2	11	4
select * from (t4 natural join t5) natural join t1 where t4.y > 7;
c	y	z	b
3	11	4	1
3	11	4	2
select * from t1 natural left join (t4 natural join t5) where t4.y > 7;
c	b	y	z
3	1	11	4
3	2	11	4
select * from (t4 natural join t5) natural right join t1 where t4.y > 7;
c	b	y	z
3	1	11	4
3	2	11	4
select * from (t1 natural join t2) join (t3 natural join t4) on t1.b = t3.b;
b	c	a	c	b	y
1	10	2	3	1	11
1	10	2	3	1	2
1	3	2	3	1	11
1	3	2	3	1	2
select t1.*, t2.* from t1 natural join t2;
c	b	a	b
10	1	2	1
3	1	2	1
select t1.*, t2.*, t3.*, t4.* from (t1 natural join t2) natural join (t3 natural join t4);
c	b	a	b	b	c	y	c
3	1	2	1	1	3	11	3
3	1	2	1	1	3	2	3
select * from (select * from t1 natural join t2) as t12
natural join
(select * from t3 natural join t4) as t34;
b	c	a	y
1	3	2	11
1	3	2	2
select * from (select * from t1 natural join t2) as t12
natural left join
(select * from t3 natural join t4) as t34;
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
select * from (select * from t3 natural join t4) as t34
natural right join
(select * from t1 natural join t2) as t12;
b	c	a	y
1	10	2	NULL
1	3	2	11
1	3	2	2
select * from v1a;
b	c	a
1	10	2
1	3	2
select * from v1b;
a	b	c
1	10	2
1	3	2
select * from v1c;
a	b	c
1	10	2
1	3	2
select * from v1d;
b	a	c
2	10	1
2	3	1
select * from v2a;
c	b	a
3	1	2
3	2	2
select * from v2b;
b	a	c
3	1	2
3	2	2
select * from v3a;
b	c	a
1	10	2
1	3	2
select * from v3b;
c	b	a
10	1	2
3	1	2
select * from v4;
c	b	a
3	1	2
select * from v1a natural join v2a;
b	c	a
1	3	2
select v2a.* from v1a natural join v2a;
c	b	a
3	1	2
select * from v1b join v2a on v1b.b = v2a.c;
a	b	c	c	b	a
1	3	2	3	1	2
1	3	2	3	2	2
select * from v1c join v2a on v1c.b = v2a.c;
a	b	c	c	b	a
1	3	2	3	1	2
1	3	2	3	2	2
select * from v1d join v2a on v1d.a = v2a.c;
b	a	c	c	b	a
2	3	1	3	1	2
2	3	1	3	2	2
select * from v1a join (t3 natural join t4) on a = y;
b	c	a	c	b	y
1	10	2	3	1	2
1	3	2	3	1	2
select * from t1 natural join (t3 cross join t4);
ERROR 23000: Column 'c' in from clause is ambiguous
select * from (t3 cross join t4) natural join t1;
ERROR 23000: Column 'c' in from clause is ambiguous
select * from t1 join (t2, t3) using (b);
ERROR 23000: Column 'b' in from clause is ambiguous
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
ERROR 23000: Column 'c' in from clause is ambiguous
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
ERROR 23000: Column 'c' in from clause is ambiguous
select * from t6 natural join ((t1 natural join t2),  (t3 natural join t4));
ERROR 23000: Column 'c' in from clause is ambiguous
select * from (t1 join t2 on t1.b=t2.b) natural join (t3 natural join t4);
ERROR 23000: Column 'b' in from clause is ambiguous
select * from  (t3 natural join t4) natural join (t1 join t2 on t1.b=t2.b);
ERROR 23000: Column 'b' in from clause is ambiguous
select * from (t3 join (t4 natural join t5) on (b < z))
natural join
(t1 natural join t2);
ERROR 23000: Column 'c' in from clause is ambiguous
select * from (t1 natural join t2) natural join (t3 join (t4 natural join t5) on (b < z));
ERROR 23000: Column 'c' in from clause is ambiguous
select t1.b from v1a;
ERROR 42S22: Unknown column 't1.b' in 'field list'
select * from v1a join v1b on t1.b = t2.b;
ERROR 42S22: Unknown column 't1.b' in 'on clause'
select * from information_schema.statistics join information_schema.columns
using(table_name,column_name) where table_name='user';
TABLE_NAME	COLUMN_NAME	TABLE_CATALOG	TABLE_SCHEMA	NON_UNIQUE	INDEX_SCHEMA	INDEX_NAME	SEQ_IN_INDEX	COLLATION	CARDINALITY	SUB_PART	PACKED	NULLABLE	INDEX_TYPE	COMMENT	TABLE_CATALOG	TABLE_SCHEMA	ORDINAL_POSITION	COLUMN_DEFAULT	IS_NULLABLE	DATA_TYPE	CHARACTER_MAXIMUM_LENGTH	CHARACTER_OCTET_LENGTH	NUMERIC_PRECISION	NUMERIC_SCALE	CHARACTER_SET_NAME	COLLATION_NAME	COLUMN_TYPE	COLUMN_KEY	EXTRA	PRIVILEGES	COLUMN_COMMENT
user	Host	NULL	mysql	0	mysql	PRIMARY	1	A	NULL	NULL	NULL		BTREE		NULL	mysql	1		NO	char	20	60	NULL	NULL	utf8	utf8_bin	char(60)	PRI		select,insert,update,references	
user	User	NULL	mysql	0	mysql	PRIMARY	2	A	5	NULL	NULL		BTREE		NULL	mysql	2		NO	char	5	16	NULL	NULL	utf8	utf8_bin	char(16)	PRI		select,insert,update,references	
drop table t1;
drop table t2;
drop table t3;
drop table t4;
drop table t5;
drop table t6;
drop view v1a;
drop view v1b;
drop view v1c;
drop view v1d;
drop view v2a;
drop view v2b;
drop view v3a;
drop view v3b;
drop view v4;
create table t1 (a1 int, a2 int);
create table t2 (a1 int, b int);
create table t3 (c1 int, c2 int);
create table t4 (c2 int);
insert into t1 values (1,1);
insert into t2 values (1,1);
insert into t3 values (1,1);
insert into t4 values (1);
select * from t1 join t2 using (a1) join t3 on b=c1 join t4 using (c2);
c2	a1	a2	b	c1
1	1	1	1	1
select * from t3 join (t1 join t2 using (a1)) on b=c1 join t4 using (c2);
c2	c1	a1	a2	b
1	1	1	1	1
select a2 from t1 join t2 using (a1) join t3 on b=c1 join t4 using (c2);
a2
1
select a2 from t3 join (t1 join t2 using (a1)) on b=c1 join t4 using (c2);
a2
1
select a2 from ((t1 join t2 using (a1)) join t3 on b=c1) join t4 using (c2);
a2
1
select a2 from ((t1 natural join t2) join t3 on b=c1) natural join t4;
a2
1
drop table t1,t2,t3,t4;