Question

我正在尝试在访问中添加表达式。如果商品代码和InvoiceNo重复，我需要有一些标志。我希望该列表示-1。

ItemCode    UnitPrice   InvoiceNo
R50         18.60       0446394
R50         18.60       0446395
R64         20.60       0444965
R64         20.60       0444965
R64         22.60       0446394
R64         22.60       0446394
G32         24.60       0445689

你能帮忙吗？这是我用来获得这些结果的sql。

SELECT [Amerinet sales]。[销售人员]，[Amerinet销售] .ShipToName，[Amerinet销售] .ShipToAddress1，[Amerinet销售] .ShipToAddress2，[Amerinet销售] .ShipToAddress3，[Amerinet销售] .ShipToCity，[ Amerinet销售] .ShipToState，[Amerinet销售] .ShipToZipCode，[Amerinet销售] .ItemCode，[Amerinet销售] .UnitPrice，[Amerinet销售] .QuantityShipped，[Amerinet销售] .ExtensionAmt，[Amerinet销售] .InvoiceDate，[Amerinet销售] .InvoiceNo，[Amerinet销售]。总计，[Amerinet销售] .BillToName，[Amerinet销售] .BillToAddress1，[Amerinet销售] .BillToAddress2，[Amerinet销售] .BillToAddress3，[Amerinet销售] .BillToCity，[Amerinet销售] ] .BillToState，[Amerinet sales] .BillToZipCode，[Amerinet Match]。[销售人员]，[Amerinet Match] .ShipToName，[Amerinet Match] .ShipToAddress1，[Amerinet Match] .ShipToAddress2，[Amerinet Match] .ShipToAddress3，[ Amerinet Match] .ShipToCity，[Amerinet Match] .ShipToState，[Amerinet Match] .ShipToZipCode，[Amerinet Match] .ItemCode，[Amerinet Match] .UnitPrice，[Amerinet匹配] .QuantityShipped，[Amerinet Match] .ExtensionAmt，[Amerinet Match] .InvoiceDate，[Amerinet Match] .InvoiceNo，[Amerinet Match] .Totals，[Amerinet Match] .BillToName，[Amerinet Match] .BillToAddress1，[Amerinet Match] ] .BillToAddress2，[Amerinet Match] .BillToAddress3，[Amerinet Match] .BillToCity，[Amerinet Match] .BillToState，[Amerinet Match] .BillToZipCode，[Amerinet Match]。[GPO ID]，[Amerinet Match] .GLN，[ Amerinet比赛] .Field3，[Amerinet比赛]。[DEA＃]，[Amerinet比赛]。[名字1]，[Amerinet比赛]。[地址1]，[Amerinet比赛] .City，[Amerinet比赛]。[状态] /省]，[Amerinet比赛]。[邮政编码]，[Amerinet比赛]。[名称2]，[Amerinet比赛]。[地址类型]，[Amerinet比赛]。[地址2]，[Amerinet比赛]。[地址3]，[Amerinet比赛]。国家，[Amerinet比赛] .Phone，[Amerinet比赛] .Fax，[Amerinet比赛] .Field17，[Amerinet比赛] .Field18，[Amerinet比赛]。[直接父GPO ID] ，[Amerinet Match]。[直接父母姓名1]，[Amerinet比赛]。[顶级家长GPO ID]，[Amerinet比赛]。[Top Parent Na]我1，[Amerinet比赛] .Field23，[Amerinet比赛] .Field24，[Amerinet比赛] .Field25，[Amerinet比赛]。[交易等级]，[Amerinet比赛] .Field27，[Amerinet比赛] .Field28， [Amerinet比赛] .Field29，[Amerinet比赛] .Field30，[Amerinet比赛] .Field31，[Amerinet比赛] .Field32，[Amerinet比赛] .Field33，[Amerinet比赛] .Field34，[Amerinet比赛]。[Sub- Class]，[Amerinet Match] .Alliance，[Amerinet Match] .IDN，[Amerinet Match]。[Sole Source Mbr Y / N]，[Amerinet Match]。[床位数] FROM [Amerinet sales] LEFT JOIN [Amerinet Match] ON（[Amerinet sales] .ItemCode = [Amerinet Match] .ItemCode）AND（[Amerinet sales] .InvoiceNo = [Amerinet Match] .InvoiceNo） GROUP BY [Amerinet销售]。[销售人员]，[Amerinet销售] .ShipToName，[Amerinet销售] .ShipToAddress1，[Amerinet销售] .ShipToAddress2，[Amerinet销售] .ShipToAddress3，[Amerinet销售] .ShipToCity，[Amerinet销售] .ShipToState，[Amerinet sales] .ShipToZipCode，[Amerinet sales] .ItemCode，[Amerinet sales] .UnitPrice，[Amerinet sales] .QuantityShipped，[Amerinet sales] .ExtensionAmt，[Amerinet sales] .InvoiceDate，[Amerinet sales] .InvoiceNo，[Amerinet sales] .Totals，[Amerinet sales] .BillToName，[Amerinet sales] .BillToAddress1，[Amerinet sales] .BillToAddress2，[Amerinet sales] .BillToAddress3，[Amerinet sales] .BillToCity，[Amerinet sales]。 BillToState，[Amerinet sales] .BillToZipCode，[Amerinet Match]。[销售人员]，[Amerinet Match] .ShipToName，[Amerinet Match] .ShipToAddress1，[Amerinet Match] .ShipToAddress2，[Amerinet Match] .ShipToAddress3，[Amerinet Match ] .ShipToCity，[Amerinet Match] .ShipToState，[Amerinet Match] .ShipToZipCode，[Amerinet Match] .ItemCode，[Amerinet Match] .UnitPrice，[Amerinet]匹配] .QuantityShipped，[Amerinet Match] .ExtensionAmt，[Amerinet Match] .InvoiceDate，[Amerinet Match] .InvoiceNo，[Amerinet Match] .Totals，[Amerinet Match] .BillToName，[Amerinet Match] .BillToAddress1，[Amerinet Match] ] .BillToAddress2，[Amerinet Match] .BillToAddress3，[Amerinet Match] .BillToCity，[Amerinet Match] .BillToState，[Amerinet Match] .BillToZipCode，[Amerinet Match]。[GPO ID]，[Amerinet Match] .GLN，[ Amerinet比赛] .Field3，[Amerinet比赛]。[DEA＃]，[Amerinet比赛]。[名字1]，[Amerinet比赛]。[地址1]，[Amerinet比赛] .City，[Amerinet比赛]。[状态] /省]，[Amerinet比赛]。[邮政编码]，[Amerinet比赛]。[名称2]，[Amerinet比赛]。[地址类型]，[Amerinet比赛]。[地址2]，[Amerinet比赛]。[地址3]，[Amerinet比赛]。国家，[Amerinet比赛] .Phone，[Amerinet比赛] .Fax，[Amerinet比赛] .Field17，[Amerinet比赛] .Field18，[Amerinet比赛]。[直接父GPO ID] ，[Amerinet Match]。[直接父母姓名1]，[Amerinet比赛]。[顶级家长GPO ID]，[Amerinet比赛]。[Top Parent Nam] e 1]，[Amerinet Match] .Field23，[Amerinet Match] .Field24，[Amerinet Match] .Field25，[Amerinet Match]。[贸易等级]，[Amerinet Match] .Field27，[Amerinet Match] .Field28， [Amerinet比赛] .Field29，[Amerinet比赛] .Field30，[Amerinet比赛] .Field31，[Amerinet比赛] .Field32，[Amerinet比赛] .Field33，[Amerinet比赛] .Field34，[Amerinet比赛]。[Sub- Class]，[Amerinet Match] .Alliance，[Amerinet Match] .IDN，[Amerinet Match]。[Sole Source Mbr Y / N]，[Amerinet Match]。[床位数];

Answer 1

你想要这样的东西吗？

select t.*,
       iif(cnt > 1, -1, 0) as HasDuplicate
from test as t inner join
      (select itemcode, invoiceno, count(*) as cnt
       from test as t
       group by itemcode, invoiceno
      ) as ii
      on ii.itemcode = t.itemcode and ii.invoiceno = t.invoiceno;

Answer 2

Have you tried it with an inner join?

添加一个名为dupe的列后，我使用MySQL测试了这个查询。应该可以访问。

update test a
join (SELECT itemCode, invoiceNo
            from test t 
    GROUP BY itemCode, invoiceNo 
    HAVING COUNT(*) > 1 ) x 
ON (a.itemCode = x.itemCode AND a.invoiceNo = x.invoiceNo)
SET dupe = "-1"

产生以下输出

"itemCode"  "UnitPrice" "InvoiceNo" "dupe"
"R50"            "19"    "0446394"  "0"
"R50"            "19"    "0446395"  "0"
"R64"            "21"    "0444965"  "-1"
"R64"            "21"    "0444965"  "-1"
"R64"            "23"    "0446394"  "-1"
"R64"            "23"    "0446394"  "-1"
"G32"            "25"    "0445689"  "0"

我试图在访问查询中找到Duplicate而不删除

2 个答案: