将SQL Server SQL查询转换为MySQL

下面是我要转换为MySQL的SQL Server查询：

SELECT SaleDetail.cTaxiNo, Category.cCarName, qryDriverExpenses.nAmount,
       Sale.nInvoiceNo, Sale.cCustomerName, IIf([cPackageType] ='GENERAL', 
       [nProviderRate],[nProviderRate]/[nProviderKM]) AS nARate, SaleDetail.nKM, 
       SaleDetail.nAmount, Sale.dInvoiceDate, qryFuel.nAmount, 
       SaleDetail.nProviderKM, SaleDetail.nProviderRate
FROM qryFuel 
RIGHT JOIN (((Sale INNER JOIN SaleDetail ON Sale.nSalePk = SaleDetail.nSalePk) 
INNER JOIN (CarMaster 
INNER JOIN Category 
ON CarMaster.nCategoryPk = Category.nCategoryPK) ON SaleDetail.cTaxiNo = 
     CarMaster.cCarNo) 
LEFT JOIN qryDriverExpenses 
    ON SaleDetail.nTourBookingpk = qryDriverExpenses.nTourBookingPK) 
ON qryFuel.nTourBookingPK = 
     SaleDetail.nTourBookingpk

ORDER BY Sale.nInvoiceNo, Sale.dInvoiceDate; 

我得到了错误的sql

语法错误。近[cPackageType]

请帮忙

SQL Server中的IIf是MySQL中的If

---

使用这种连接只是自找麻烦。请学习正确的连接语法。以下是格式化查询：

SELECT SaleDetail.cTaxiNo
,Category.cCarName
,qryDriverExpenses.nAmount
,Sale.nInvoiceNo
,Sale.cCustomerName
,CASE WHEN `cPackageType` ='GENERAL' THEN 
        `nProviderRate`
    ELSE
        `nProviderRate`/`nProviderKM`
    END AS nARate
,SaleDetail.nKM
,SaleDetail.nAmount
,Sale.dInvoiceDate
,qryFuel.nAmount
,SaleDetail.nProviderKM
,SaleDetail.nProviderRate
FROM qryFuel 
INNER JOIN SaleDetail
    ON qryFuel.nTourBookingPK = SaleDetail.nTourBookingpk
RIGHT OUTER JOIN Sale
    ON Sale.nSalePk = SaleDetail.nSalePk
INNER JOIN CarMaster 
    ON SaleDetail.cTaxiNo = CarMaster.cCarNo
INNER JOIN Category 
    ON CarMaster.nCategoryPk = Category.nCategoryPK
LEFT OUTER JOIN qryDriverExpenses 
    ON SaleDetail.nTourBookingpk = qryDriverExpenses.nTourBookingPK
ORDER BY Sale.nInvoiceNo, Sale.dInvoiceDate; 

---

引用的列名应该用记号而不是方括号括起来。

试试这个。MySQL使用IF而不是IIF，也不太像方括号：

SELECT SaleDetail.cTaxiNo, Category.cCarName, qryDriverExpenses.nAmount,
   Sale.nInvoiceNo, Sale.cCustomerName, If(cPackageType ='GENERAL', 
nProviderRate,nProviderRate/nProviderKM) AS nARate, SaleDetail.nKM, 
SaleDetail.nAmount, Sale.dInvoiceDate, qryFuel.nAmount, 
SaleDetail.nProviderKM, SaleDetail.nProviderRate


  FROM qryFuel RIGHT JOIN (((Sale INNER JOIN SaleDetail ON Sale.nSalePk =            
  SaleDetail.nSalePk) INNER JOIN (CarMaster INNER JOIN Category ON 
 CarMaster.nCategoryPk = Category.nCategoryPK) ON SaleDetail.cTaxiNo = 
 CarMaster.cCarNo) LEFT JOIN qryDriverExpenses ON SaleDetail.nTourBookingpk 
 = qryDriverExpenses.nTourBookingPK) ON qryFuel.nTourBookingPK = 
 SaleDetail.nTourBookingpk

   ORDER BY Sale.nInvoiceNo, Sale.dInvoiceDate;

---

IIF在MySQL中无效

改变

IIf([cPackageType] ='GENERAL', 
       [nProviderRate],[nProviderRate]/[nProviderKM]) AS nARate

到

---

MYSQL中没有IIF，请改用IF；如果[cPackageType]='GENERAL'，[nProviderRate]，[nProviderRate]/[nProviderKM]作为nARate，那么实际上TSQL+SQL Server使用IIF。此外，op正在尝试从SQL Server转换为MySQLAh，我一直忘记他们在2012年添加了它。谢谢由于方括号的原因，查询仍然会抛出相同的错误。

SELECT SaleDetail.cTaxiNo, Category.cCarName, qryDriverExpenses.nAmount,
   Sale.nInvoiceNo, Sale.cCustomerName, If(cPackageType ='GENERAL', 
nProviderRate,nProviderRate/nProviderKM) AS nARate, SaleDetail.nKM, 
SaleDetail.nAmount, Sale.dInvoiceDate, qryFuel.nAmount, 
SaleDetail.nProviderKM, SaleDetail.nProviderRate


  FROM qryFuel RIGHT JOIN (((Sale INNER JOIN SaleDetail ON Sale.nSalePk =            
  SaleDetail.nSalePk) INNER JOIN (CarMaster INNER JOIN Category ON 
 CarMaster.nCategoryPk = Category.nCategoryPK) ON SaleDetail.cTaxiNo = 
 CarMaster.cCarNo) LEFT JOIN qryDriverExpenses ON SaleDetail.nTourBookingpk 
 = qryDriverExpenses.nTourBookingPK) ON qryFuel.nTourBookingPK = 
 SaleDetail.nTourBookingpk

   ORDER BY Sale.nInvoiceNo, Sale.dInvoiceDate;

IIf([cPackageType] ='GENERAL', 
       [nProviderRate],[nProviderRate]/[nProviderKM]) AS nARate

if [cPackageType] = 'GENERAL' then nProviderRate 
 else nProviderRate/nProviderKM
end as nARate