MySQL按行分组
我有一张这样的桌子:MySQL按行分组,mysql,sql,group-by,pivot-table,summarization,Mysql,Sql,Group By,Pivot Table,Summarization,我有一张这样的桌子: Pay Code2 Pay Code Site Sum of Hours Week Year OT OT Africa 8.0 10 2014 Jamaica 5.0 10 2014 Paid Shrink PERS
Pay Code2 Pay Code Site Sum of Hours Week Year
OT OT Africa 8.0 10 2014
Jamaica 5.0 10 2014
Paid Shrink PERS Canada 2.0 10 2014
Iraq 16.0 10 2014
US 2.0 10 2014
VACP Iraq 16.0 10 2014
REG REG Africa 40.0 10 2014
Canada 38.0 10 2014
England 40.0 10 2014
Iraq 8.0 10 2014
Jamaica 40.0 10 2014
US 32.0 10 2014
Unpaid Shrink VTO US 6.0 10 2014
此查询:
SELECT Pay_Code, Site, SUM(Hours), Week(Date,4), YEAR(Date)
FROM table
GROUP BY Pay_Code, Site, YEAR(Date), WEEK(Date,4)
给我:
Pay Code Site Sum of Hours Week Year
OT Africa 8.0 10 2014
Jamaica 5.0 10 2014
PERS Canada 2.0 10 2014
Iraq 16.0 10 2014
US 2.0 10 2014
REG Africa 40.0 10 2014
Canada 38.0 10 2014
England 40.0 10 2014
Iraq 8.0 10 2014
Jamaica 40.0 10 2014
US 32.0 10 2014
VACP Iraq 16.0 10 2014
VTO US 6.0 10 2014
我想做的是将Pay_代码组分组,以便进一步汇总。看起来像这样的东西:
Pay Code2 Pay Code Site Sum of Hours Week Year
OT OT Africa 8.0 10 2014
Jamaica 5.0 10 2014
Paid Shrink PERS Canada 2.0 10 2014
Iraq 16.0 10 2014
US 2.0 10 2014
VACP Iraq 16.0 10 2014
REG REG Africa 40.0 10 2014
Canada 38.0 10 2014
England 40.0 10 2014
Iraq 8.0 10 2014
Jamaica 40.0 10 2014
US 32.0 10 2014
Unpaid Shrink VTO US 6.0 10 2014
目标是按站点、按周报告Pay_Code2字段,但表中不存在Pay_Code2字段。现在我查询大量数据,并使用数据透视表对行进行分组。如果可能的话,我想在MySQL中这样做。听起来您正试图基于PayCode值创建一个新类别。您可以尝试以下方法:
SELECT CASE
WHEN Pay_Code = 'OT' THEN 'OT'
WHEN Pay_Code IN ('VACP','PERS') THEN 'Paid Shrink'
WHEN Pay_Code = 'REG' THEN 'REG'
WHEN Pay_Code IN ('VTO','LOA','BER') THEN 'Unpaid Shrink'
ELSE 'Unknown'
END as PayCode_2
,YEAR(Date), WEEK(Date,4), SUM(Hours), Site, Pay_Code
FROM table
GROUP BY PayCode_2, Pay_Code, Site, YEAR(Date), WEEK(Date,4)
什么是
pay Shrink
,REG REG
,pay Shrink
?为什么不添加一列“pay\u code\u 2”或一个查找表?@pce-我有RO到表中,所以我不能添加任何字段。我不知道设置组的MySQL方法,即Pay Shrink=VACP+PERS、Pay Shrink=VTO+LOA等@bluefeet-Pay_Code2标题下的所有项目都是分组行。例如,付费收缩=VACP+PERS、REG=REG、OT=OT、未付费收缩=VTO+LOA+BER等。目前我正在使用数据透视表将行分组在一起。如果可能的话,我想使用MySQL代码来完成这项工作,这样工作就可以在DB服务器上完成,并且查询不会返回太多数据。