join.test

开启mysql的远程连接的方法 mysql-noinstall-5.1.6-alpha-win32.zip

INSERT INTO t2 VALUES ('rivercats','cust',20);
SELECT emp.rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE emp.emp_id = 'psmith' AND lr.siteid = 'rivercats';
SELECT emp.rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE lr.siteid = 'rivercats' AND emp.emp_id = 'psmith';
SELECT rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE emp.emp_id = 'psmith' AND siteid = 'rivercats';
SELECT rate_code, lr.base_rate FROM t1 AS emp LEFT JOIN t2 AS lr USING (siteid, rate_code) WHERE siteid = 'rivercats' AND emp.emp_id = 'psmith';
drop table t1,t2;

#
# Problem with internal list handling when reducing WHERE
#

CREATE TABLE t1 (ID INTEGER NOT NULL PRIMARY KEY, Value1 VARCHAR(255));
CREATE TABLE t2 (ID INTEGER NOT NULL PRIMARY KEY, Value2 VARCHAR(255));
INSERT INTO t1 VALUES (1, 'A');
INSERT INTO t2 VALUES (1, 'B');

SELECT * FROM t1 NATURAL JOIN t2 WHERE 1 AND (Value1 = 'A' AND Value2 <> 'B');
SELECT * FROM t1 NATURAL JOIN t2 WHERE 1 AND Value1 = 'A' AND Value2 <> 'B';
SELECT * FROM t1 NATURAL JOIN t2 WHERE (Value1 = 'A' AND Value2 <> 'B') AND 1;
drop table t1,t2;

#
# dummy natural join (no common columns) Bug #4807
#

CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);
CREATE TABLE t3 (c int);
SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3;
DROP TABLE t1, t2, t3;

#
# Test combination of join methods
#

create table t1 (i int);
create table t2 (i int);
create table t3 (i int);
insert into t1 values(1),(2);
insert into t2 values(2),(3);
insert into t3 values (2),(4);

select * from t1 natural left join t2;
select * from t1 left join t2 on (t1.i=t2.i);
select * from t1 natural left join t2 natural left join t3;
select * from t1 left join t2 on (t1.i=t2.i) left join t3 on (t2.i=t3.i);

select * from t3 natural right join t2;
select * from t3 right join t2 on (t3.i=t2.i);
select * from t3 natural right join t2 natural right join t1;
select * from t3 right join t2 on (t3.i=t2.i) right join t1 on (t2.i=t1.i);

select * from t1,t2 natural left join t3 order by t1.i,t2.i,t3.i;
select * from t1,t2 left join t3 on (t2.i=t3.i) order by t1.i,t2.i,t3.i;
select t1.i,t2.i,t3.i from t2 natural left join t3,t1 order by t1.i,t2.i,t3.i;
select t1.i,t2.i,t3.i from t2 left join t3 on (t2.i=t3.i),t1 order by t1.i,t2.i,t3.i;

select * from t1,t2 natural right join t3 order by t1.i,t2.i,t3.i;
select * from t1,t2 right join t3 on (t2.i=t3.i) order by t1.i,t2.i,t3.i;
select t1.i,t2.i,t3.i from t2 natural right join t3,t1 order by t1.i,t2.i,t3.i;
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;
drop table t1,t2,t3;

# End of 4.1 tests

#
#  Tests for WL#2486 Natural/using join according to SQL:2003.
#
#  NOTICE:
#  - The tests are designed so that all statements, except MySQL
#    extensions run on any SQL server. Please do no change.
#  - Tests marked with TODO will be submitted as bugs.
#

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);

-- Views with simple natural join.
create algorithm=merge view v1a as
select * from t1 natural join t2;
-- as above, but column names are cross-renamed: a->c, c->b, b->a
create algorithm=merge view v1b(a,b,c) as
select * from t1 natural join t2;
-- as above, but column names are aliased: a->c, c->b, b->a
create algorithm=merge view v1c as
select b as a, c as b, a as c from t1 natural join t2;
--  as above, but column names are cross-renamed, and aliased
--  a->c->b, c->b->a, b->a->c
create algorithm=merge view v1d(b, a, c) as
select a as c, c as b, b as a from t1 natural join t2;

-- Views with JOIN ... ON
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;

-- Views with bigger natural join
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);

-- View over views with mixed natural join and join ... on
create algorithm=merge view v4 as
select * from v2a natural join v3a;

-- Nested natural/using joins.
select * from (t1 natural join t2) natural join (t3 natural join t4);
select * from (t1 natural join t2) natural left join (t3 natural join t4);
select * from (t3 natural join t4) natural right join (t1 natural join t2);
select * from (t1 natural left join t2) natural left join (t3 natural left join t4);
select * from (t4 natural right join t3) natural right join (t2 natural right join t1);
select * from t1 natural join t2 natural join t3 natural join t4;
select * from ((t1 natural join t2) natural join t3) natural join t4;
select * from t1 natural join (t2 natural join (t3 natural join t4));
-- BUG#15355: this query fails in 'prepared statements' mode
-- select * from ((t3 natural join (t1 natural join t2)) natural join t4) natural join t5;
-- select * from ((t3 natural left join (t1 natural left join t2)) natural left join t4) natural left join t5;
select * from t5 natural right join (t4 natural right join ((t2 natural right join t1) natural right join t3));
select * from (t1 natural join t2), (t3 natural join t4);
-- MySQL extension - nested comma ',' operator instead of cross join.
-- BUG#15357 - natural join with nested cross-join results in incorrect columns
-- select * from t5 natural join ((t1 natural join t2), (t3 natural join t4));
-- select * from  ((t1 natural join t2),  (t3 natural join t4)) natural join t5;
-- select * from t5 natural join ((t1 natural join t2) cross join (t3 natural join t4));
-- select * from  ((t1 natural join t2) cross join (t3 natural join t4)) natural join t5;

select * from (t1 join t2 using (b)) join (t3 join t4 using (c)) using (c);
select * from (t1 join t2 using (b)) natural join (t3 join t4 using (c));


-- Other clauses refer to NJ columns.
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;
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;
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;

-- Qualified column references to NJ columns.
select * from t1 natural join t2 where t1.c > t2.a;
select * from t1 natural join t2 where t1.b > t2.b;
select * from t1 natural left join (t4 natural join t5) where t5.z is not NULL;

-- Nested 'join ... on' - name resolution of ON conditions
select * from t1 join (t2 join t4 on b + 1 = y) on t1.c = t4.c;
select * from (t2 join t4 on b + 1 = y) join t1 on t1.c = t4.c;
select * from t1 natural join (t2 join t4 on b + 1 = y);
select * from (t1 cross join t2) join (t3 cross join t4) on (a < y and t2.b < t3.c);

-- MySQL extension - 'join ... on' over nested comma operator
select * from (t1, t2) join (t3, t4) on (a < y and t2.b < t3.c);
select * from (t1 natural join t2) join (t3 natural join t4) on a = y;
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;

-- MySQL extension - refererence qualified coalesced columns
select * from t1 natural join t2 where t1.b > 0;
select * from t1 natural join (t4 natural join t5) where t4.y > 7;
select * from (t4 natural join t5) natural join t1 where t4.y > 7;
select * from t1 natural left join (t4 natural join t5) where t4.y > 7;
select * from (t4 natural join t5) natural right join t1 where t4.y > 7;
select * from (t1 natural join t2) join (t3 natural join t4) on t1.b = t3.b;

-- MySQL extension - select qualified columns of NJ columns
select t1.*, t2.* from t1 natural join t2;
select t1.*, t2.*, t3.*, t4.* from (t1 natural join t2) natural join (t3 natural join t4);

-- Queries over subselects in the FROM clause
select * from (select * from t1 natural join t2) as t12
              natural join
              (select * from t3 natural join t4) as t34;
select * from (select * from t1 natural join t2) as t12
              natural left join
              (select * from t3 natural join t4) as t34;
select * from (select * from t3 natural join t4) as t34
              natural right join
              (select * from t1 natural join t2) as t12;

-- Queries over views
select * from v1a;
select * from v1b;
select * from v1c;
select * from v1d;
select * from v2a;
select * from v2b;
select * from v3a;
select * from v3b;
select * from v4;
select * from v1a natural join v2a;
select v2a.* from v1a natural join v2a;
select * from v1b join v2a on v1b.b = v2a.c;
select * from v1c join v2a on v1c.b = v2a.c;
select * from v1d join v2a on v1d.a = v2a.c;
select * from v1a join (t3 natural join t4) on a = y;

-- TODO: add tests with correlated subqueries for natural join/join on.
-- related to BUG#15269


----------------------------------------------------------------------
-- Negative tests (tests for errors)
----------------------------------------------------------------------
-- error 1052
select * from t1 natural join (t3 cross join t4); -- works in Oracle - bug
-- error 1052
select * from (t3 cross join t4) natural join t1; -- works in Oracle - bug
-- error 1052
select * from t1 join (t2, t3) using (b);
-- error 1052
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
-- error 1052
select * from ((t1 natural join t2), (t3 natural join t4)) natural join t6;
-- error 1052
-- BUG#15357: doesn't detect non-unique column 'c', as in the above query.
-- select * from t6 natural join ((t1 natural join t2),  (t3 natural join t4));
-- error 1052
select * from (t1 join t2 on t1.b=t2.b) natural join (t3 natural join t4);
-- error 1052
select * from  (t3 natural join t4) natural join (t1 join t2 on t1.b=t2.b);
-- this one is OK, the next equivalent one is incorrect (bug in Oracle)
-- error 1052
select * from (t3 join (t4 natural join t5) on (b < z))
              natural join
              (t1 natural join t2);
-- error 1052
-- BUG#15357: this query should return an ambiguous column error
-- Expected result: the query must return error with duplicate column 'c'
--select * from (t1 natural join t2)
--              natural join
--              (t3 join (t4 natural join t5) on (b < z));

-- error 1054
select t1.b from v1a;
-- error 1054
select * from v1a join v1b on t1.b = t2.b;

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;

# End of tests for WL#2486 - natural/using join