mysql - 根据时间戳搜索相关行并添加行

Question

Name       Count   Timestamp

'1FODC1IN', 5,  '2013-11-19 12:20:00'
'1FODC2IN', 6,  '2013-11-19 12:20:00'
'1FODC3IN', 42,  '2013-11-19 12:20:00'
'1FODC4IN', 34,  '2013-11-19 12:20:00'
'2FDCIN', 2,  '2013-11-19 12:20:00'
'2FISIN', 3,  '2013-11-19 12:20:00'
'2FODC1IN', 24, '2013-11-19 12:20:00'
'2FODC3IN', 4,  '2013-11-19 12:20:00'
'2FODC4IN', 6, '2013-11-19 12:20:00'
'CMNZ', 35,  '2013-11-19 12:20:00'
'GFAODCIN', 29,  '2013-11-19 12:20:00'
'MAINZN1', 111, '2013-11-19 12:20:00'

'1FODC1IN', 5,  '2013-11-20 11:50:13'
'1FODC2IN', 6,  '2013-11-20 11:50:13'
'1FODC3IN', 45,  '2013-11-20 11:50:13'
'1FODC4IN', 39,  '2013-11-20 11:50:13'
'2FISIN', 2, '2013-11-20 11:50:13'
'2FODC1IN', 20, '2013-11-20 11:50:13'
'2FODC3IN', 10,  '2013-11-20 11:50:13'
'2FODC4IN', 7, '2013-11-20 11:50:13'
'CMNZ', 39,  '2013-11-20 11:50:13'
'GFAODCIN', 23,  '2013-11-20 11:50:13'
'MAINZN1', 131, '2013-11-20 11:50:13'

这种数据每 15 分钟记录一次。

我的要求是找到名称中的“IN”字，然后将所有一起出现的 1F%IN、类似地一起出现的 2F%IN、一起出现的 GF%IN 加起来等等。

需要输出为

Name  count  timestamp

first  87    2013-11-19 12:20:00
Second 39    2013-11-19 12:20:00
ground 29    2013-11-19 12:20:00
first  87    2013-11-20 11:50:13
Second 39    2013-11-20 11:50:13
ground 29    2013-11-20 11:50:13

根据时间戳添加也很重要。

我该怎么做。

Answer 1

SQLFiddle demo

SELECT GName,
       SUM(`Count`),
       `Timestamp`
FROM
(
select 
     CASE WHEN Name LIKE '1F%IN' THEN 'first'
          WHEN Name LIKE '2F%IN' THEN 'second'
          WHEN Name LIKE 'GF%IN' THEN 'ground'
          ELSE 'Unknown'
     END as GName, 
     `Count`,
     `Timestamp`
FROM T
  WHERE Name LIKE '%IN'
) T1 
Group by GName,`Timestamp` 
order by `Timestamp`,GName