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[求助]mysql過濾條件加總問題[複製鏈接]

ayabreay1

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電梯直達

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發表於 2022-11-18 06:33 PM|只看該作者|倒序瀏覽

成為伊莉的版主，你將獲得更高級和無限的權限。把你感興趣的版面一步步地發展和豐盛，那種滿足感等著你來嚐嚐喔。

想請教各位大大，我要如何從以下表下sql抓取最後10筆00:20的keyboard的數量加總?

日期	時間	欄位	數量
2022/11/17	00:03	keyboard	88
2022/11/17	00:03	mouse	77
2022/11/17	00:03	trumpet	66
2022/11/17	00:03	screen	55
2022/11/17	00:20	keyboard	99
2022/11/17	00:20	mouse	66
2022/11/17	00:20	trumpet	55
2022/11/17	00:20	screen	33
2022/11/17	00:40	keyboard	22
2022/11/17	00:40	mouse	11
2022/11/17	00:40	trumpet	33
2022/11/17	00:40	screen	44
2022/11/17	00:55	keyboard	55
2022/11/17	00:55	mouse	66
2022/11/17	00:55	trumpet	77
2022/11/17	00:55	screen	88
2022/11/18	00:03	keyboard	88
2022/11/18	00:03	mouse	77
2022/11/18	00:03	trumpet	66
2022/11/18	00:03	screen	55
2022/11/18	00:20	keyboard	99
2022/11/18	00:20	mouse	66
2022/11/18	00:20	trumpet	55
2022/11/18	00:20	screen	33
2022/11/18	00:40	keyboard	22
2022/11/18	00:40	mouse	11
2022/11/18	00:40	trumpet	33
2022/11/18	00:40	screen	44
2022/11/18	00:55	keyboard	55
2022/11/18	00:55	mouse	66
2022/11/18	00:55	trumpet	77
2022/11/18	00:55	screen	88
2022/11/19	00:03	keyboard	88
2022/11/19	00:03	mouse	77
2022/11/19	00:03	trumpet	66
2022/11/19	00:03	screen	55
2022/11/19	00:20	keyboard	99
2022/11/19	00:20	mouse	66
2022/11/19	00:20	trumpet	55
2022/11/19	00:20	screen	33
2022/11/19	00:40	keyboard	22
2022/11/19	00:40	mouse	11
2022/11/19	00:40	trumpet	33
2022/11/19	00:40	screen	44
2022/11/19	00:55	keyboard	55
2022/11/19	00:55	mouse	66
2022/11/19	00:55	trumpet	77
2022/11/19	00:55	screen	88
2022/11/20	00:03	keyboard	88
2022/11/20	00:03	mouse	77
2022/11/20	00:03	trumpet	66
2022/11/20	00:03	screen	55
2022/11/20	00:20	keyboard	99
2022/11/20	00:20	mouse	66
2022/11/20	00:20	trumpet	55
2022/11/20	00:20	screen	33
2022/11/20	00:40	keyboard	22
2022/11/20	00:40	mouse	11
2022/11/20	00:40	trumpet	33
2022/11/20	00:40	screen	44
2022/11/20	00:55	keyboard	55
2022/11/20	00:55	mouse	66
2022/11/20	00:55	trumpet	77
2022/11/20	00:55	screen	88

...

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yku

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發表於 2023-2-8 11:04 AM|只看該作者

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本帖最後由 yku 於 2023-2-8 11:05 AM 編輯

select sum(ret2.a4) as sum_tot
from(
select ret.*
from (
select '2022/11/17' as a1,'00:03' as a2,'keyboard' as a3,'88' as a4 union all
select '2022/11/17' as a1,'00:03' as a2,'mouse' as a3,'77' as a4 union all
select '2022/11/17' as a1,'00:03' as a2,'trumpet' as a3,'66' as a4 union all
select '2022/11/17' as a1,'00:03' as a2,'screen' as a3,'55' as a4 union all
select '2022/11/17' as a1,'00:20' as a2,'keyboard' as a3,'99' as a4 union all
select '2022/11/17' as a1,'00:20' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/17' as a1,'00:20' as a2,'trumpet' as a3,'55' as a4 union all
select '2022/11/17' as a1,'00:20' as a2,'screen' as a3,'33' as a4 union all
select '2022/11/17' as a1,'00:40' as a2,'keyboard' as a3,'22' as a4 union all
select '2022/11/17' as a1,'00:40' as a2,'mouse' as a3,'11' as a4 union all
select '2022/11/17' as a1,'00:40' as a2,'trumpet' as a3,'33' as a4 union all
select '2022/11/17' as a1,'00:40' as a2,'screen' as a3,'44' as a4 union all
select '2022/11/17' as a1,'00:55' as a2,'keyboard' as a3,'55' as a4 union all
select '2022/11/17' as a1,'00:55' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/17' as a1,'00:55' as a2,'trumpet' as a3,'77' as a4 union all
select '2022/11/17' as a1,'00:55' as a2,'screen' as a3,'88' as a4 union all
select '2022/11/18' as a1,'00:03' as a2,'keyboard' as a3,'88' as a4 union all
select '2022/11/18' as a1,'00:03' as a2,'mouse' as a3,'77' as a4 union all
select '2022/11/18' as a1,'00:03' as a2,'trumpet' as a3,'66' as a4 union all
select '2022/11/18' as a1,'00:03' as a2,'screen' as a3,'55' as a4 union all
select '2022/11/18' as a1,'00:20' as a2,'keyboard' as a3,'99' as a4 union all
select '2022/11/18' as a1,'00:20' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/18' as a1,'00:20' as a2,'trumpet' as a3,'55' as a4 union all
select '2022/11/18' as a1,'00:20' as a2,'screen' as a3,'33' as a4 union all
select '2022/11/18' as a1,'00:40' as a2,'keyboard' as a3,'22' as a4 union all
select '2022/11/18' as a1,'00:40' as a2,'mouse' as a3,'11' as a4 union all
select '2022/11/18' as a1,'00:40' as a2,'trumpet' as a3,'33' as a4 union all
select '2022/11/18' as a1,'00:40' as a2,'screen' as a3,'44' as a4 union all
select '2022/11/18' as a1,'00:55' as a2,'keyboard' as a3,'55' as a4 union all
select '2022/11/18' as a1,'00:55' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/18' as a1,'00:55' as a2,'trumpet' as a3,'77' as a4 union all
select '2022/11/18' as a1,'00:55' as a2,'screen' as a3,'88' as a4 union all
select '2022/11/19' as a1,'00:03' as a2,'keyboard' as a3,'88' as a4 union all
select '2022/11/19' as a1,'00:03' as a2,'mouse' as a3,'77' as a4 union all
select '2022/11/19' as a1,'00:03' as a2,'trumpet' as a3,'66' as a4 union all
select '2022/11/19' as a1,'00:03' as a2,'screen' as a3,'55' as a4 union all
select '2022/11/19' as a1,'00:20' as a2,'keyboard' as a3,'99' as a4 union all
select '2022/11/19' as a1,'00:20' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/19' as a1,'00:20' as a2,'trumpet' as a3,'55' as a4 union all
select '2022/11/19' as a1,'00:20' as a2,'screen' as a3,'33' as a4 union all
select '2022/11/19' as a1,'00:40' as a2,'keyboard' as a3,'22' as a4 union all
select '2022/11/19' as a1,'00:40' as a2,'mouse' as a3,'11' as a4 union all
select '2022/11/19' as a1,'00:40' as a2,'trumpet' as a3,'33' as a4 union all
select '2022/11/19' as a1,'00:40' as a2,'screen' as a3,'44' as a4 union all
select '2022/11/19' as a1,'00:55' as a2,'keyboard' as a3,'55' as a4 union all
select '2022/11/19' as a1,'00:55' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/19' as a1,'00:55' as a2,'trumpet' as a3,'77' as a4 union all
select '2022/11/19' as a1,'00:55' as a2,'screen' as a3,'88' as a4 union all
select '2022/11/20' as a1,'00:03' as a2,'keyboard' as a3,'88' as a4 union all
select '2022/11/20' as a1,'00:03' as a2,'mouse' as a3,'77' as a4 union all
select '2022/11/20' as a1,'00:03' as a2,'trumpet' as a3,'66' as a4 union all
select '2022/11/20' as a1,'00:03' as a2,'screen' as a3,'55' as a4 union all
select '2022/11/20' as a1,'00:20' as a2,'keyboard' as a3,'99' as a4 union all
select '2022/11/20' as a1,'00:20' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/20' as a1,'00:20' as a2,'trumpet' as a3,'55' as a4 union all
select '2022/11/20' as a1,'00:20' as a2,'screen' as a3,'33' as a4 union all
select '2022/11/20' as a1,'00:40' as a2,'keyboard' as a3,'22' as a4 union all
select '2022/11/20' as a1,'00:40' as a2,'mouse' as a3,'11' as a4 union all
select '2022/11/20' as a1,'00:40' as a2,'trumpet' as a3,'33' as a4 union all
select '2022/11/20' as a1,'00:40' as a2,'screen' as a3,'44' as a4 union all
select '2022/11/20' as a1,'00:55' as a2,'keyboard' as a3,'55' as a4 union all
select '2022/11/20' as a1,'00:55' as a2,'mouse' as a3,'66' as a4 union all
select '2022/11/20' as a1,'00:55' as a2,'trumpet' as a3,'77' as a4 union all
select '2022/11/20' as a1,'00:55' as a2,'screen' as a3,'88' as a4 )ret
where ret.a2 = '00:20' order by a1 desc limit 10 ) ret2
where a3 = 'keyboard'

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