mysqlsql按日期统计（sqlserver/mysql按天、按小时、按分钟统计连续时间段数据推荐）

-- 按年产生连续的
SELECT 
 substring(CONVERT(NVARCHAR(10), DateAdd(YEAR, number, '2016-01-01'),120),1,4) AS GroupDay,type 
FROM 
 master..spt_values 
WHERE type = 'p' AND number <= DateDiff(YEAR, '2016-01-01', '2019-01-01') 
-- 按月产生连续的
SELECT 
 substring(CONVERT(NVARCHAR(10), DateAdd(MONTH, number, '2019-01-01'),120),1,7) AS GroupDay,type 
FROM 
 master..spt_values 
WHERE type = 'p' AND number <= DateDiff(MONTH, '2018-01-01', '2019-01-01') 
-- 按天产生连续的
SELECT 
 CONVERT(NVARCHAR(10), DateAdd(day, number, '2019-01-01'),120) AS GroupDay,type 
FROM 
 master..spt_values 
WHERE type = 'p' AND number <= DateDiff(day, '2019-01-01', '2019-01-18') 
-- 按小时产生连续的
SELECT 
 substring(convert(char(32),DATEADD(HH,number,CONCAT('2019-01-18',' ', '00:00')),120),1,16) AS GroupDay,type 
FROM
 master..spt_values 
WHERE type = 'p' AND DATEDIFF(HH,DATEADD(HH,number,CONCAT('2019-01-18',' ', '00:00')),CONCAT('2019-01-18',' ', '23:00'))>=0
-- 按分钟的就自己可以YY了
......

-- 按天统计交易笔数
select a.GroupDay, ISNULL(b.e, 0) 'feeCount' from (
   SELECT 
    CONVERT(NVARCHAR(10), DateAdd(day, number, @paySdate),120) AS GroupDay,type 
   FROM 
    master..spt_values 
   WHERE 
    type = 'p' AND number <= DateDiff(day, @paySdate, @payEdate) 
   ) a 
   left join 
    (select 
     convert(char(32),create_time,23) as d, count(*) as e 
    from 
     trade_log where create_time >= @paySdate and create_time<=@payEdate
    group by convert(char(32),create_time,23)) b on b.d=a.GroupDay
-- 按小时统计交易笔数
select a.GroupDay, ISNULL(b.e,0) 'feeCount' from (
    SELECT 
     substring(convert(char(32),DATEADD(HH,number,CONCAT(@paySdate,' ', @paySTime)),120),1,16) AS GroupDay,type 
    FROM 
     master..spt_values 
    WHERE 
     type = 'p' AND DATEDIFF(HH,DATEADD(HH,number,CONCAT(@paySdate,' ', @paySTime)),CONCAT(@payEdate,' ', @payETime))>=0 
    ) a 
    left join (
    select 
     convert(char(32),create_time,23) as d, datepart(hh,create_time) as h,
     substring(convert(char(32),DATEADD(HH,datepart(hh,create_time),convert(char(32),create_time,23)),120),1,16) as st,
     count(*) as e 
    from 
     trade_log 
    where create_time >= @paySdate and create_time<=@payEdate 
     and convert(char(8),create_time,108)>=@paySTime and convert(char(8),create_time,108)<=@payETime 
    group by convert(char(32),create_time,23),datepart(hh,create_time)) b 
    on b.st=a.GroupDay order by GroupDay

select DATE_FORMAT(create_time,'%Y%m%d') days,count(caseid) count from tc_case group by days;
 select DATE_FORMAT(create_time,'%Y%u') weeks,count(caseid) count from tc_case group by weeks;
 select DATE_FORMAT(create_time,'%Y%m') months,count(caseid) count from tc_case group by months;