row.test

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

# Initialise
--disable_warnings
drop table if exists t1;
--enable_warnings

select (1,2,3) IN ((3,2,3), (1,2,3), (1,3,3));
select row(10,2,3) IN (row(3,2,3), row(1,2,3), row(1,3,3));
select row(1,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3));
select row(10,2,3) IN (row(3,NULL,3), row(1,2,3), row(1,3,3));
select row('a',1.5,3) IN (row(1,2,3), row('a',1.5,3), row('a','a','a'));
select row('a',0,3) IN (row(3,2,3), row('a','a','3'), row(1,3,3));
select row('a',0,3) IN (row(3,2,3), row('a','0','3'), row(1,3,3));
select row('a',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3));
select row('b',1.5,3) IN (row(3,NULL,3), row('a',1.5,3), row(1,3,3));
select row('b',1.5,3) IN (row('b',NULL,3), row('a',1.5,3), row(1,3,3));
select row('b',1.5,3) IN (row('b',NULL,4), row('a',1.5,3), row(1,3,3));
select (1,2,(3,4)) IN ((3,2,(3,4)), (1,2,(3,4)));
-- error 1241
select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,4));
select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));
explain extended select row(1,2,row(3,4)) IN (row(3,2,row(3,4)), row(1,2,row(3,NULL)));

SELECT (1,2,3)=(0,NULL,3);
SELECT (1,2,3)=(1,NULL,3);
# here's something for Sanja to fix :)
SELECT (1,2,3)=(1,NULL,0);

SELECT ROW(1,2,3)=ROW(1,2,3);
SELECT ROW(2,2,3)=ROW(1+1,2,3);
SELECT ROW(1,2,3)=ROW(1+1,2,3);
SELECT ROW(1,2,3)<ROW(1+1,2,3);
SELECT ROW(1,2,3)>ROW(1+1,2,3);
SELECT ROW(1,2,3)<=ROW(1+1,2,3);
SELECT ROW(1,2,3)>=ROW(1+1,2,3);
SELECT ROW(1,2,3)<>ROW(1+1,2,3);
SELECT ROW(NULL,2,3)=ROW(NULL,2,3);
SELECT ROW(NULL,2,3)<=>ROW(NULL,2,3);
SELECT ROW(1,2,ROW(3,4,5))=ROW(1,2,ROW(3,4,5));
SELECT ROW('test',2,3.33)=ROW('test',2,3.33);
-- error 1241
SELECT ROW('test',2,3.33)=ROW('test',2,3.33,4);
SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,33));
SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,3));
SELECT ROW('test',2,ROW(3,33))=ROW('test',2,ROW(3,NULL));
-- error 1241
SELECT ROW('test',2,ROW(3,33))=ROW('test',2,4);

create table t1 ( a int, b int, c int);
insert into t1 values (1,2,3), (2,3,1), (3,2,1), (1,2,NULL);
select * from t1 where ROW(1,2,3)=ROW(a,b,c);
select * from t1 where ROW(0,2,3)=ROW(a,b,c);
select * from t1 where ROW(1,2,3)<ROW(a,b,c);
select ROW(a,2,3) IN(row(1,b,c), row(2,3,1)) from t1;
select ROW(c,2,3) IN(row(1,b,a), row(2,3,1)) from t1;
select ROW(a,b,c) IN(row(1,2,3), row(3,2,1)) from t1;
select ROW(1,2,3) IN(row(a,b,c), row(1,2,3)) from t1;
drop table t1;

-- error 1241
select ROW(1,1);

create table t1 (i int);
-- error 1241
select 1 from t1 where ROW(1,1);
-- error 1241
select count(*) from t1 order by ROW(1,1);
-- error 1241
select count(*) from t1 having (1,1) order by i;
drop table t1;

create table t1 (a int, b int);
insert into t1 values (1, 4);
insert into t1 values (10, 40);
insert into t1 values (1, 4);
insert into t1 values (10, 43);
insert into t1 values (1, 4);
insert into t1 values (10, 41);
insert into t1 values (1, 4);
insert into t1 values (10, 43);
insert into t1 values (1, 4);
select a, MAX(b), (1, MAX(b)) = (1, 4) from t1 group by a;
drop table t1;
SELECT ROW(2,10) <=> ROW(3,4);
SELECT ROW(NULL,10) <=> ROW(3,NULL);

#
# Bug #27484: nested row expressions in IN predicate
#

--error 1241
SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,1));
--error 1241
SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,1),ROW(1,ROW(2,3)));
--error 1241
SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),ROW(1,ROW(2,2,2)));
--error 1241
SELECT ROW(1,ROW(2,3,4)) IN (ROW(1,ROW(2,3,4)),ROW(1,ROW(2,2)));

--error 1241
SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),(SELECT 1,1));
--error 1241
SELECT ROW(1,ROW(2,3)) IN (ROW(1,ROW(2,3)),(SELECT 1,1),ROW(1,ROW(2,4)));
--error 1241
SELECT ROW(1,ROW(2,3)) IN ((SELECT 1,1),ROW(1,ROW(2,3)));

--error 1241
SELECT ROW(2,1) IN (ROW(21,2),ROW(ROW(1,1,3),0));
--error 1241
SELECT ROW(2,1) IN (ROW(ROW(1,1,3),0),ROW(21,2));

#
# Bug#27704: erroneous comparison of rows with NULL components
#
CREATE TABLE t1(a int, b int, c int);
INSERT INTO t1 VALUES (1, 2, 3),
  (NULL, 2, 3  ), (1, NULL, 3  ), (1, 2,   NULL),
  (NULL, 2, 3+1), (1, NULL, 3+1), (1, 2+1, NULL),
  (NULL, 2, 3-1), (1, NULL, 3-1), (1, 2-1, NULL);

SELECT (1,2,3) = (1,   NULL, 3);
SELECT (1,2,3) = (1+1, NULL, 3);
SELECT (1,2,3) = (1,   NULL, 3+1);
SELECT * FROM t1 WHERE (a,b,c) = (1,2,3);

SELECT (1,2,3) <> (1,   NULL, 3);
SELECT (1,2,3) <> (1+1, NULL, 3);
SELECT (1,2,3) <> (1,   NULL, 3+1);
SELECT * FROM t1 WHERE (a,b,c) <> (1,2,3);

SELECT (1,2,3) < (NULL, 2,    3);
SELECT (1,2,3) < (1,    NULL, 3);
SELECT (1,2,3) < (1-1,  NULL, 3);
SELECT (1,2,3) < (1+1,  NULL, 3);
SELECT * FROM t1 WHERE (a,b,c) < (1,2,3);

SELECT (1,2,3) <= (NULL, 2,    3);
SELECT (1,2,3) <= (1,    NULL, 3);
SELECT (1,2,3) <= (1-1,  NULL, 3);
SELECT (1,2,3) <= (1+1,  NULL, 3);
SELECT * FROM t1 WHERE (a,b,c) <= (1,2,3);

SELECT (1,2,3) > (NULL, 2,    3);
SELECT (1,2,3) > (1,    NULL, 3);
SELECT (1,2,3) > (1-1,  NULL, 3);
SELECT (1,2,3) > (1+1,  NULL, 3);
SELECT * FROM t1 WHERE (a,b,c) > (1,2,3);

SELECT (1,2,3) >= (NULL, 2,    3);
SELECT (1,2,3) >= (1,    NULL, 3);
SELECT (1,2,3) >= (1-1,  NULL, 3);
SELECT (1,2,3) >= (1+1,  NULL, 3);
SELECT * FROM t1 WHERE (a,b,c) >= (1,2,3);

DROP TABLE t1;

# End of 4.1 tests

#
# Correct NULL handling in row comporison (BUG#12509)
#
SELECT ROW(1,1,1) = ROW(1,1,1) as `1`, ROW(1,1,1) = ROW(1,2,1) as `0`, ROW(1,NULL,1) = ROW(2,2,1) as `0`, ROW(1,NULL,1) = ROW(1,2,2) as `0`, ROW(1,NULL,1) = ROW(1,2,1) as `null` ;
select row(NULL,1)=(2,0);

#
# Bug #16081: row equalities are to be used for query optimizations  
#

CREATE TABLE t1 (a int, b int, PRIMARY KEY (a,b));
INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (1,2), (3,2), (3,3);

EXPLAIN SELECT * FROM t1 WHERE a=3 AND b=2;
EXPLAIN SELECT * FROM t1 WHERE (a,b)=(3,2);
SELECT * FROM t1 WHERE a=3 and b=2;
SELECT * FROM t1 WHERE (a,b)=(3,2);

CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c));
INSERT INTO t2 VALUES
  (1,1,2), (3,1,3), (1,2,2), (4,4,2),
  (1,1,1), (3,1,1), (1,2,1);

EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b=t2.b;
EXPLAIN SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b);
SELECT * FROM t1,t2 WHERE t1.a=t2.a and t1.b=t2.b;
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b);

EXPLAIN SELECT * FROM t1,t2 WHERE t1.a=t2.a AND t1.b=2;
EXPLAIN SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,2);
SELECT * FROM t1,t2 WHERE t1.a=1 and t1.b=t2.b;
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,2);

EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b+1);
SELECT * FROM t1,t2 WHERE (t1.a,t1.b)=(t2.a,t2.b+1);

EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1);
SELECT * FROM t1,t2 WHERE (t1.a-1,t1.b)=(t2.a-1,t2.b+1);

EXPLAIN SELECT * FROM t2 WHERE a=3 AND b=2;
EXPLAIN SELECT * FROM t2 WHERE (a,b)=(3,2);
SELECT * FROM t2 WHERE a=3 and b=2;
SELECT * FROM t2 WHERE (a,b)=(3,2);

EXPLAIN SELECT * FROM t1,t2 WHERE t2.a=t1.a AND t2.b=2 AND t2.c=1;
EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE (t2.a,(t2.b,t2.c))=(t1.a,(2,1));
SELECT * FROM t1,t2 WHERE (t2.a,(t2.b,t2.c))=(t1.a,(2,1));

EXPLAIN EXTENDED SELECT * FROM t1,t2 WHERE t2.a=t1.a AND (t2.b,t2.c)=(2,1);
SELECT * FROM t1,t2 WHERE t2.a=t1.a AND (t2.b,t2.c)=(2,1);

DROP TABLE t1,t2;

#
# Bug #27154: crash (memory corruption) when using row equalities   
#

CREATE TABLE t1(
 a int, b int, c int, d int, e int, f int, g int, h int,
 PRIMARY KEY (a,b,c,d,e,f,g)
);
INSERT INTO t1 VALUES (1,2,3,4,5,6,7,99);

SELECT h FROM t1 WHERE (a,b,c,d,e,f,g)=(1,2,3,4,5,6,7);

SET @x:= (SELECT h FROM t1 WHERE (a,b,c,d,e,f,g)=(1,2,3,4,5,6,7));
SELECT @x;

DROP TABLE t1;