mysql日期格式与字符串格式的转化

 

直接贴代码吧，例子在代码里，本例经过测试。

 select * from (select  str_to_date(concat(substr(ctiWorkEventTbl.hourValue, 1, 4), '-',substr(ctiWorkEventTbl.hourValue, 5, 2),'-',substr(ctiWorkEventTbl.hourValue, 7, 2)), '%Y-%m-%d') strdate ,  concat(substr(ctiWorkEventTbl.hourValue, 1, 4), '-',substr(ctiWorkEventTbl.hourValue, 5, 2),'-',substr(ctiWorkEventTbl.hourValue, 7, 2)),ctiWorkEventTbl.hourValue,ctiWorkEventTbl.agentCnt,ctiCallstaTbl.totalCallCnt/ctiWorkEventTbl.agentCnt as perAgtCallCnt    /*坐席平均呼叫次数*/,ctiCallstaTbl.totalCallCnt   ,ctiCallstaTbl.totalOkCallCnt,ctiCallstaTbl.totalOkCallCnt/ctiWorkEventTbl.agentCnt as perAgtOkCallCnt    /*平均通话次数*/,ctiCallstaTbl.totalBadCallCnt,ctiCallstaTbl.badToAgtCnt,ctiCallstaTbl.userAbandonCnt,ctiCallstaTbl.callDuration,ctiCallstaTbl.perCallDuration,ctiCallstaTbl.ringCnt,ctiCallstaTbl.ringDuration,ctiCallstaTbl.perRingDuration,ctiWorkEventTbl.refer2OtherCnt,ctiWorkEventTbl.transfer2OtherCnt,ctiCallstaTbl.agentDisconnectCnt,ctiCallstaTbl.userDisconnectCnt,ctiCallstaTbl.otherGrpCallInCnt,ctiCallstaTbl.perOtherGrpCallInCnt,ctiCallstaTbl.otherGrpCallInDuration,ctiCallstaTbl.maxCallDurationfrom(select     substr(starttime, 1, 8) as  hourValue , concat(substr(starttime, 1, 4), '-',substr(starttime, 5, 2),'-',substr(starttime, 7, 2)) starttimestr,sum(if(calltype = 3 && direction = 1, 1, 0)) as totalCallCnt   /*总呼叫次数*/,sum(if(calltype = 3 && direction = 1 && status = 1, 1, 0)) as totalOkCallCnt/*通话次数*/,sum(if(calltype = 3 && direction = 1, 1, 0)) as totalCallInCnt/*呼入次数*/,sum(if(calltype = 3 && direction = 1  &&  status = 2 , 1, 0)) as totalBadCallCnt/*总失败次数*/,sum(if(calltype = 3 && detail = 0007 , 1, 0)) as badToAgtCnt/*坐席未接起*/,sum(if(calltype = 3 && (detail = 0008 || detail = 0106 || detail = 0107), 1, 0)) as userAbandonCnt  /*用户放弃*/,sum(if(calltype = 3 && detail = 0009 , 1, 0)) as agentNoAnswerCnt/*坐席无应答*/,sum(if(calltype = 3 && direction = 1 && status = 1, duration, 0)) as callDuration/*通话时长*/,sum(if(calltype = 3 && direction = 1 && status = 1, duration, 0))/sum(if(calltype = 3 && direction = 1 && status = 1, 1, 0))  as perCallDuration/*平均通话时长*/,sum(if(calltype = 3 && (direction = 1 || direction = 2 ) &&  ringseconds > 0, 1, 0)) as ringCnt/*振铃次数*/,sum(if(calltype = 3 && (direction = 1 || direction = 2 ) &&  ringseconds > 0, ringseconds, 0)) as ringDuration/*振铃时长*/,sum(if(calltype = 3 && (direction = 1 || direction = 2 ) &&  ringseconds > 0, ringseconds, 0))/sum(if(calltype = 3 && (direction = 1 || direction = 2 ) &&  ringseconds > 0, 1, 0))  as perRingDuration/*平均振铃时长*/,sum(if((calltype = 3 && direction = 1 && disconnection = 2) || (calltype = 3 && direction = 2 && disconnection = 1) , 1, 0)) as  agentDisconnectCnt/*坐席挂机*/,sum(if((calltype = 3 && direction = 1 && disconnection = 1) || (calltype = 3 && direction = 2 && disconnection = 2) , 1, 0)) as  userDisconnectCnt/*用户挂机*/,sum(if(calltype = 3 && direction = 1 &&  substr(taskid, 9, 6) != substr(department, 15, 6), 1, 0)) as otherGrpCallInCnt /*非本组代答*/,sum(if(calltype = 3 && direction = 1 &&  substr(taskid, 9, 6) != substr(department, 15, 6), 1, 0)) / sum(if(calltype = 3 && direction = 1, 1, 0))  as perOtherGrpCallInCnt /*非本组代答率*/,sum(if(calltype = 3 && direction = 1 &&  substr(taskid, 9, 6) != substr(department, 15, 6), duration, 0)) as otherGrpCallInDuration /*非本组代答时长*/,max(if(calltype = 3 && direction = 1 && status = 1, duration, 0)) as maxCallDuration/*最长通话时长*/from  cti_callstatgroup by  substr(starttime, 1, 8)) ctiCallstaTblleft join (  select    count(distinct(agentid))as agentCnt  ,substr(etime, 1, 8) as  hourValue   ,sum(if(event = 5, 1, 0)) as refer2OtherCnt/*咨询次数*/,sum(if(event = 6 || event = 7 , 1, 0))  as transfer2OtherCnt/*转移次数*/from cti_workeventgroup by  substr(etime, 1, 8)) ctiWorkEventTbl on ctiCallstaTbl.hourValue = ctiWorkEventTbl.hourValue )  d     where d.strdate > date_format('2012-05-03','%y-%m-%d')  

总结：

字符串转日期：

  str_to_date(concat(substr(ctiWorkEventTbl.hourValue, 1, 4), '-',substr(ctiWorkEventTbl.hourValue, 5, 2),'-',substr(ctiWorkEventTbl.hourValue, 7, 2)), '%Y-%m-%d') strdate

  简化就是  str_to_date(‘2012-03-06’,'%Y-%m-%d') strdate

日期格式的格式化：

date_format('2012-05-03','%y-%m-%d')

 

 

 

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

DATE_FORMAT(date,format) 
根据format字符串格式化date值。下列修饰符可以被用在format字符串中： %M 月名字(January……December) 
%W 星期名字(Sunday……Saturday) 
%D 有英语前缀的月份的日期(1st, 2nd, 3rd, 等等。） 
%Y 年, 数字, 4 位 
%y 年, 数字, 2 位 
%a 缩写的星期名字(Sun……Sat) 
%d 月份中的天数, 数字(00……31) 
%e 月份中的天数, 数字(0……31) 
%m 月, 数字(01……12) 
%c 月, 数字(1……12) 
%b 缩写的月份名字(Jan……Dec) 
%j 一年中的天数(001……366) 
%H 小时(00……23) 
%k 小时(0……23) 
%h 小时(01……12) 
%I 小时(01……12) 
%l 小时(1……12) 
%i 分钟, 数字(00……59) 
%r 时间,12 小时(hh:mm:ss [AP]M) 
%T 时间,24 小时(hh:mm:ss) 
%S 秒(00……59) 
%s 秒(00……59) 
%p AM或PM 
%w 一个星期中的天数(0=Sunday ……6=Saturday ） 
%U 星期(0……52), 这里星期天是星期的第一天 
%u 星期(0……52), 这里星期一是星期的第一天 
%% 一个文字“%”。