from:https://controls.engin.umich.edu/wiki/index.php/Basic_statistics:_mean,_median,_average,_standard_deviation,_z-scores,_and_p-value#Mean_and_Weigh...
分类:
其他好文 时间:
2015-10-15 12:46:00
阅读次数:
205
实例级别的监控,一直开启并且低开销:建立基础表:createtablesys.sesstat_historytablespaceEOLas
SELECTc.username,
c.osuser,
a.sid,
c.serial#,
c.paddr,
c.process,
c.logon_time,
a.statistic#,
b.name,
a.value,
SYSDATEASlogoff_timestamp
FROMv$sesstata,v$statnameb..
分类:
数据库 时间:
2015-09-17 17:45:59
阅读次数:
215
请看下表: 问题: 把统计时间(statistic)相同的,服务域(service_domain_moid)?a中的hd100的数量的和与hd100s的数量的和计算出来。 使用方法:?group by 首先,我们把service_domain_moid为a的筛选出来,如下:...
分类:
数据库 时间:
2015-09-16 11:00:34
阅读次数:
256
官网的链接如下:http://docs.oracle.com/cd/E11882_01/server.112/e26088/statements_4005.htm#SQLRF01105使用DBMS_STATS 收集统计信息参考:Oracle Statistic 统计信息 小结http://blog....
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数据库 时间:
2015-09-10 01:44:08
阅读次数:
429
Matrix Multiplication
Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)
Submit Statistic Next
Problem
Problem Description
Let us consider undirected...
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其他好文 时间:
2015-08-28 00:54:46
阅读次数:
187
High Speed Trains
Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)
Submit Statistic Next
Problem
Problem Description
The kingdom of Flatland has n c...
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其他好文 时间:
2015-08-26 17:56:23
阅读次数:
141
Matrix Multiplication
Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)
Submit Statistic Next
Problem
Problem Description
Let us consider undirected ...
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其他好文 时间:
2015-08-26 12:15:52
阅读次数:
136
Beautiful People
Special Judge Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB
(Java/Others)
Submit Statistic Next
Problem
Problem Description
The most prestig...
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其他好文 时间:
2015-08-26 01:57:41
阅读次数:
196
High Speed Trains
Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)
Submit Statistic Next
Problem
Problem Description
The kingdom of Flatland has n c...
分类:
编程语言 时间:
2015-08-26 01:56:40
阅读次数:
223
KIDx's Triangle
Time Limit: 2000/1000MS (Java/Others)
Memory Limit: 128000/64000KB (Java/Others)
Submit
Statistic
Next Problem
Problem Description
One day, KIDx solved a math problem for m...
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其他好文 时间:
2015-08-15 23:05:58
阅读次数:
191