analyze.result

来自「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.」· RESULT 代码 · 共 59 行

create table t1 (a bigint);
lock tables t1 write;
insert into t1 values(0);
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
unlock tables;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
drop table t1;
create table t1 (a bigint);
insert into t1 values(0);
lock tables t1 write;
delete from t1;
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
unlock tables;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
drop table t1;
create table t1 (a bigint);
insert into t1 values(0);
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
drop table t1;
create table t1 (a mediumtext, fulltext key key1(a)) charset utf8 collate utf8_general_ci engine myisam;
insert into t1 values ('hello');
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	Table is already up to date
drop table t1;
CREATE TABLE t1 (a int);
prepare stmt1 from "SELECT * FROM t1 PROCEDURE ANALYSE()";
execute stmt1;
Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
execute stmt1;
Field_name	Min_value	Max_value	Min_length	Max_length	Empties_or_zeros	Nulls	Avg_value_or_avg_length	Std	Optimal_fieldtype
deallocate prepare stmt1;
drop table t1;
create temporary table t1(a int, index(a));
insert into t1 values('1'),('2'),('3'),('4'),('5');
analyze table t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	OK
show index from t1;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
t1	1	a	1	a	A	5	NULL	NULL	YES	BTREE	
drop table t1;