我有一个需要以一种有趣的方式去规范化的查询。
这是来源:
SELECT
BILL_Invoice.Invoice_Number as AccountNumber,
replace(convert(varchar(10), dbo.BILL_Invoice.Invoice_Date,101) ,'/','') as AdmitDate,
BILL_InvoiceCPT.InvoiceCPT_Code AS CPTCode,
InvoiceCPT_FeeAmount as ItemCharge
FROM
dbo.BILL_InvoiceCPT
LEFT JOIN dbo.BILL_Invoice
ON dbo.BILL_InvoiceCPT.Invoice_ID = dbo.BILL_Invoice.Invoice_ID
输出如下所示:
AccountNumber | AdmitDate | CPTCode | ItemCharge
38689 | 02192013 | 99213 | 110.00
38689 | 02192013 | 80053 | 0.00
38689 | 02192013 | 86361 | 0.00
38689 | 02192013 | 85025 | 0.00
38689 | 02192013 | 87536 | 0.00
38689 | 02192013 | 93000 | 25.00
我需要的是:
AccountNumber | AdmitDate | TotalCharges | CPTCodes | ItemCharges
38689 | 02192013 | 135.00 | 99213;80053;86361;85025;87536;93000 | 110.00;0.00;0.00;0.00;0.00;25.00
这是输入到 3rd 方软件应用程序所必需的。我不太确定如何正确地对这些信息进行非规范化。 PIVOT 函数会这样做吗?
最佳答案
MySQL 有一个名为 GROUP_CONCAT 的就绪函数。 !
它看起来像这样:
SELECT
AccountNumber
,AdmitDate
,SUM(TotalCharges)
,GROUP_CONCAT(CPTCode)
,GROUP_CONCAT(ItemCharges)
FROM tbl
WHERE condition
GROUP BY AccountNumber, AdmitDate
关于sql - 非规范化 SQL 查询和组合列,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14984706/