Question

我被困在一个查询中，我必须显示制造商的清单和他们采取的贷款金额以及他们退回的退款金额。我已经生成了查询，但我想总计没有：制造商的退款和贷款制造商已经采取的总数：。和差异，即LoanTaken - RefundAmount =剩余金额。如果它可以在查询中。

SELECT MM.*, ML.*, MR.*  FROM microfinance_manufacturers AS MM 
                INNER JOIN manufacturer_loans AS ML ON MM.ManufacturerId = Ml.ManufacturerId 
                INNER JOIN manufacturer_refunds AS MR ON MM.ManufacturerId = MR.manufacturerId
                WHERE 1 = 1

ManufacturerId  FirstName  LastName  Gender  Religion  PhoneNumber  EmailAddress  Notes              CustomerAddedDateTime  manufacturerTypeId  manufacturerRoles                                                                                                                                                                                                                                                                                                                                                                                 LoanID  ManufacturerId  LoanAmount  LoanDate    RefundId  manufacturerId  RefundAmount  RefundDate

         5  Saud       Jibran         0         0  8475983748G  HFDKJFH       VGHJXGVHJD         2015-04-29 14:12:20                    21  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_     6               5  65644343:1:"2015-05-06Em       6               5  77744s_Station2015-05-06:{
         5  Saud       Jibran         0         0  8475983748G  HFDKJFH       VGHJXGVHJD         2015-04-29 14:12:20                    21  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_    13               5  543543;s:1:"2015-05-07Em       6               5  77744s_Station2015-05-06:{
         7  Naveed     Ahmed          0         0  847893       hfkjhfskj     fjksddshkfjdshfkj  2015-04-29 14:22:16                    19  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_    16               7  8798u656:1:"2015-05-07Em       9               7  4354334Station2015-05-07:{
         7  Naveed     Ahmed          0         0  847893       hfkjhfskj     fjksddshkfjdshfkj  2015-04-29 14:22:16                    19  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_    16               7  8798u656:1:"2015-05-07Em      10               7  896789798ation2015-05-07:{
         7  Naveed     Ahmed          0         0  847893       hfkjhfskj     fjksddshkfjdshfkj  2015-04-29 14:22:16                    19  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_    17               7  87987687:1:"2015-05-07Em       9               7  4354334Station2015-05-07:{
         7  Naveed     Ahmed          0         0  847893       hfkjhfskj     fjksddshkfjdshfkj  2015-04-29 14:22:16                    19  O:16:"clsEmployeeRoles":68:{s:56:"aEmployeeRole_Organization_RegionalHierarchy_RegionTypes";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:52:"aEmployeeRole_Organization_RegionalHierarchy_Regions";a:4:{i:0;i:0;i:1;i:0;i:2;i:0;i:3;i:0;}s:69:"aEmployeeRole_Organization_RegionalHierarchy_Regions_RegionStatistics";a:2:{i:0;i:0;i:2;i:0;}s:82:"aEmployeeRole_Organization_RegionalHierarchy_Regions_    17               7  87987687:1:"2015-05-07Em      10               7  896789798ation2015-05-07:{

我附上了我正在获得的输出图片... 表是制造商，贷款，退款，manufacutrerId在所有表中都很常见。现在在图片中显示重复记录，因为制造商贷款2次但返还金额1次..但它在退款栏中重复。请帮助!!!

Answer 1

此查询应该有效：

SELECT ManufacturerId,FirstName,LA,RA, LA - RA as RemainingAmount FROM  (SELECT MM.ManufacturerId,MM. FirstName,SUM(LoanAmount) as LA, SUM(RefundAmount) as RA  FROM microfinance_manufacturers AS MM 
                INNER JOIN manufacturer_loans AS ML ON MM.ManufacturerId = Ml.ManufacturerId 
                INNER JOIN manufacturer_refunds AS MR ON MM.ManufacturerId = MR.manufacturerId
                GROUP BY MM.ManufacturerId) as a

Answer 2

您需要在 join之前进行聚合。否则，你最终会得到一个叛逆的产品，它会抛出这些值：

SELECT MM.*, ML.*, MR.* FROM microfinance_manufacturers MM left join (select Ml.ManufacturerId, count(*) as numloans, sum(ml.amount) as loanamount from manufacturer_loans ML group by ManufacturerId ) ml on MM.ManufacturerId = Ml.ManufacturerId left join (select Mr.ManufacturerId, count(*) as numrefunds, sum(ml.amount) as refundamount from manufacturer_refunds mr group by ManufacturerId ) mr on MM.ManufacturerId = MR.manufacturerId;

您的问题在数据布局和预期结果方面都不清楚。但这基本上应该是你需要的。

如何在两个不同的表中使用SUM和INNER JOIN

2 个答案: