Question

我的查询确实在运行，但没有返回任何结果：

SET NoCount ON

SELECT 
   Inventory.EffectiveDate, 
   Inventory.Quantity, 
   Inventory.SourceType,
   Inventory.PickingLocation, 
   Inventory.SourceInventory,
   Locations.LocationId,
   Customers.CustomerName,
   Products.ProductId,
   LocationFrom.LocationId as lFrom,
   LocationTo.LocationId as lTo

FROM (((((((dbo.Inventory AS Inventory

   LEFT JOIN dbo.Products AS Products ON  Products.Product = Inventory.Product )
   LEFT JOIN dbo.Locations AS Locations ON Locations.Location = Inventory.Location )
   LEFT JOIN dbo.Customers AS Customers ON Customers.ConsignmentLocation = Inventory.Location )

   LEFT JOIN dbo.Inventory AS SourceLocation ON SourceLocation.Inventory = Inventory.SourceInventory)
   LEFT JOIN dbo.Locations AS LocationFrom ON LocationFrom.Location = SourceLocation.Location )

   LEFT JOIN dbo.Inventory AS TargetLocation ON TargetLocation.Inventory = Inventory.TargetInventory)
   LEFT JOIN dbo.Locations AS LocationTo ON LocationTo.Location = TargetLocation.Location)

WHERE  
    (Inventory.SourceType = 'Q' OR Inventory.SourceType = 'G' OR Inventory.SourceType = 'P' OR Inventory.SourceType = 'A' OR Inventory.SourceType = 'B') 
    AND 
    ((Inventory.EffectiveDate >= 2011-12-30 And Inventory.EffectiveDate <= 2011-12-31));

此查询从Excel运行正常。但我一直在寻找能够查看表格的工具，这就是我使用Access的原因 - 但它给了我更多的问题....

Answer 1

您需要用单引号括住日期参数。

Inventory.EffectiveDate >= '2011-12-30'

您还应该考虑使用较短的别名来使代码更简洁。我不确定使用像Products这样的别名来表示dbo.Products的目的......如果Access没有强制它们，你也应该删除所有不必要的括号。

SET NOCOUNT ON;

SELECT 
   inv.EffectiveDate, 
   inv.Quantity, 
   inv.SourceType,
   inv.PickingLocation, 
   inv.SourceInventory,
   loc.LocationId,
   cust.CustomerName,
   prod.ProductId,
   lFrom.LocationId as lFrom,
   lTo.LocationId as lTo
FROM  dbo.Inventory AS inv
LEFT OUTER JOIN dbo.Products  AS prod  ON prod.Product   = inv.Product
LEFT OUTER JOIN dbo.Locations AS loc   ON loc.Location   = inv.Location
LEFT OUTER JOIN dbo.Customers AS cust  ON inv.Location   = cust.ConsignmentLocation
LEFT OUTER JOIN dbo.Inventory AS src   ON src.Inventory  = inv.SourceInventory
LEFT OUTER JOIN dbo.Locations AS lFrom ON lFrom.Location = src.Location
LEFT OUTER JOIN dbo.Inventory AS trg   ON trg.Inventory  = inv.TargetInventory
LEFT OUTER JOIN dbo.Locations AS lTo   ON lTo.Location   = trg.Location
WHERE  
    inv.SourceType IN ('Q', 'G', 'P', 'A', 'B') 
    AND inv.EffectiveDate >= '2011-12-30' 
    AND inv.EffectiveDate <= '2011-12-31'; -- suspect you want < '2012-01-01' here
    -- unless your column doesn't store time.

MS Access / SQL Server传递查询

1 个答案: