ndb_cache.result

来自「这是linux下运行的mysql软件包,可用于linux 下安装 php + m」· RESULT 代码 · 共 192 行

drop table if exists t1;
set GLOBAL query_cache_type=on;
set GLOBAL query_cache_size=1355776;
reset query cache;
flush status;
CREATE TABLE t1 ( pk int not null primary key,
a int, b int not null, c varchar(20)) ENGINE=ndbcluster;
insert into t1 value (1, 2, 3, 'First row');
select * from t1;
pk	a	b	c
1	2	3	First row
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	1
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	1
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	0
select * from t1;
pk	a	b	c
1	2	3	First row
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	1
update t1 set a=3 where pk=1;
select * from t1;
pk	a	b	c
1	3	3	First row
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	2
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	1
insert into t1 value (2, 7, 8, 'Second row');
insert into t1 value (4, 5, 6, 'Fourth row');
select * from t1 order by pk;
pk	a	b	c
1	3	3	First row
2	7	8	Second row
4	5	6	Fourth row
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	3
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	1
select * from t1 order by pk;
pk	a	b	c
1	3	3	First row
2	7	8	Second row
4	5	6	Fourth row
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	2
select * from t1 where b=3;
pk	a	b	c
1	3	3	First row
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	2
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	2
select * from t1 where b=3;
pk	a	b	c
1	3	3	First row
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	3
delete from t1 where c='Fourth row';
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	0
select * from t1 where b=3;
pk	a	b	c
1	3	3	First row
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	3
use test;
select * from t1 order by pk;
pk	a	b	c
1	3	3	First row
2	7	8	Second row
select * from t1 where b=3;
pk	a	b	c
1	3	3	First row
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	4
update t1 set a=4 where b=3;
use test;
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	0
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	4	3	First row
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	4	3	First row
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	7
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	5
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	4	3	First row
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	4	3	First row
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	1
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	7
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	7
begin;
update t1 set a=5 where pk=1;
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	0
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	7
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	7
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	4	3	First row
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	1
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	8
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	7
commit;
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	1
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	8
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	7
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	5	3	First row
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	9
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	7
select * from t1 order by pk desc;
pk	a	b	c
2	7	8	Second row
1	5	3	First row
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	1
show status like "Qcache_inserts";
Variable_name	Value
Qcache_inserts	9
show status like "Qcache_hits";
Variable_name	Value
Qcache_hits	8
drop table t1;
show status like "Qcache_queries_in_cache";
Variable_name	Value
Qcache_queries_in_cache	0
SET GLOBAL query_cache_size=0;