JMeter---QPS(Query Per Second) QPS为每秒查询率.是一台查询服务器每秒能够处理的查询次数,在因特网上,作为域名系统服务器的性能经常用每秒查询率来衡量.步骤:1.添加线程组(之前学过啦)注:参数 ramp-up period 用于告知JMeter 要在多长时间内建立全部的线程.默认值是0.假如未指定,也就是说ramp-up period 为零, JMeter 将立即建立所有线程,假设ramp-up period 设置成T 秒, 全部线程数设置成N个, JMeter
group by DATE_FORMAT(createtime,'%Y-%m');//按月统计数据 group by DATE_FORMAT(createtime,'%Y-%m-%d');//按天统计数据 +---------------------------------+----------+ | DATE_FORMAT(createtime,'%Y-%m') | count(*) | +---------------------------------+----------+ | | |
一系列统计数据 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 40487 Accepted Submission(s): 22532 Problem Description 对于给定的一个字符串.统计当中数字字符出现的次数. Input 输入数据有多行.第一行是一个整数n,表示測试实例的个数,后面跟着n行,每行包含一个由字母
查看最新用户表统计信息 select owner,table_name,last_analyzed from dba_tables where owner not like '%SYS%' order by 1,3; SELECT Table_Name,Num_Rows,Blocks,Empty_Blocks,Avg_Space,Chain_Cnt,Avg_Row_Len,Sample_Size,Last_AnalyzedFROM Dba_Tables WHERE owner = 'SCOTT'
PROCEDURE SET_TABLE_STATS Argument Name Type In/Out Default? ------------------------------ ----------------------- ------ -------- OWNNAME VARCHAR2 IN TABNAME VARCHAR2 IN PARTNAME VARCHAR2 IN DEFAULT STATTAB VARCHAR2 IN DEFAULT STATID VARCHAR2 IN DE