Question

我必须在存储过程中选择如下所示的查询。

sklearn

如您所见，以上两个选择查询之间的唯一区别是，在第二个选择查询的末尾，还有一个额外的where条件SELECT @licenseCount = COUNT(*) FROM ServicePool SP INNER JOIN UserPackages UP ON UP.ServicePoolId = SP.Id AND SP.UserId = UP.UserId INNER JOIN Package P ON P.Id = UP.PackageId LEFT OUTER JOIN CompanyProfile C ON C.LicenseId = SP.Id INNER JOIN CompanyProfile CP ON CP.CurrencyId = P.CurrencyId INNER JOIN PackageCategory PC ON PC.OrganizationTypeId = CP.OrganisationType AND PC.PackageId = P.Id WHERE SP.Active = 1 AND SP.UserId = @uId AND P.Active = 1 and CP.CompanyID = @cId and ISNULL(C.CompanyID,0) = 0 AND DATEDIFF(DAY,GETDATE(),DATEADD(DAY,P.ValidityPeriod,UP.PurchaseDate)) > 0 SELECT @paymentCount = COUNT(*) FROM ServicePool SP INNER JOIN UserPackages UP ON UP.ServicePoolId=SP.Id AND SP.UserId = UP.UserId INNER JOIN Package P ON P.Id = UP.PackageId LEFT OUTER JOIN CompanyProfile C ON C.LicenseId = SP.Id INNER JOIN CompanyProfile CP ON CP.CurrencyId = P.CurrencyId INNER JOIN PackageCategory PC ON PC.OrganizationTypeId = CP.OrganisationType AND PC.PackageId = P.Id WHERE SP.Active = 1 AND SP.UserId = @uId AND P.Active = 1 and CP.CompanyID = @cId and ISNULL(C.CompanyID,0) = 0 AND DATEDIFF(DAY,GETDATE(),DATEADD(DAY,P.ValidityPeriod,UP.PurchaseDate)) > 0 AND UP.PaymentStatus = 'P'。

所以我想知道有什么方法可以简化此查询吗？

Answer 1

下面将是查询

SELECT @licenseCount = COUNT(*), @paymentCount = COUNT(case when UP.PaymentStatus = 'P' then 1 else 0 end)   FROM ServicePool SP
    INNER JOIN UserPackages UP ON UP.ServicePoolId = SP.Id 
        AND SP.UserId = UP.UserId
    INNER JOIN Package P ON P.Id = UP.PackageId
    LEFT OUTER JOIN CompanyProfile C ON C.LicenseId = SP.Id         
    INNER JOIN CompanyProfile CP ON CP.CurrencyId = P.CurrencyId    
    INNER JOIN PackageCategory PC ON PC.OrganizationTypeId = CP.OrganisationType 
        AND PC.PackageId = P.Id     
    WHERE SP.Active = 1  
        AND SP.UserId = @uId 
        AND P.Active = 1  
        and CP.CompanyID = @cId
        and ISNULL(C.CompanyID,0) = 0 
        AND 
DATEDIFF(DAY,GETDATE(),DATEADD(DAY,P.ValidityPeriod,UP.PurchaseDate))

您可以在第一个查询本身中定义@paymentCount变量

测试结果-

hive> select * from test_so_t1;
OK
123     90001   90001
123     90001   90002
123     90001   90003
123     90002   90001
123     90002   90002
123     90003   90002
123     90003   90003
Time taken: 0.118 seconds, Fetched: 7 row(s)
hive> select count(case when mem_id=90001 then 1 else 0 end) as groupBy, group_id from test_so_t1 group by group_id;
Total MapReduce CPU Time Spent: 3 seconds 900 msec
OK
7       123
Time taken: 17.271 seconds, Fetched: 1 row(s)

如何简化选择查询

1 个答案: