工作中用到统计12月份通话记录,统计号码拨打次数,但是问题出在一个号码可以拨打多次,每次可能接通也可能不接通,如果用主叫号码caller字段group by分组后count(*)统计数目,这样会导致不能看到统计数目中几条是接通,几条是未接通的,于是想到用union分是否接通各自统计,然后将统计结果按照号码排序放到一起,具体实现如下
billid(通话记录id),caller(主叫号码),callerstarttime(拨打时间),callerResult(拨打结果0未接通 1接通)
sql实现语句如下:
SELECT bill_id,Caller,from_unixtime(CallerStartTime,‘%Y-%c-%d %h:%i:%s‘) as date,CallResult,count(*) as num FROM `sup_tel_record` where CallerStartTime > 1417363200 and CallerStartTime < 1420041600 and CallResult = 0 group by Caller union SELECT bill_id,Caller,from_unixtime(CallerStartTime,‘%Y-%c-%d %h:%i:%s‘) as date,CallResult,count(*) as num FROM `sup_tel_record` where CallerStartTime > 1417363200 and CallerStartTime < 1420041600 and CallResult = 1 group by Caller order by date asc
输出结果如下:
注意使用union进行sql语句连接时,第一条sql语句不能使用order by排序,否则会出现
mysql错误 1221 Incorrect usage of union and order by
时间: 2024-10-11 10:58:33