WHERE 子句具有有效的无效参数

Question

我有一个交叉表查询，如下图：

TRANSFORM Sum([Raw Scores].[Raw Score]) AS SumOfScore
SELECT [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number], Sum([Raw Scores].Score) AS [Final Score], Sum([Raw Scores].[Raw Score]) AS [Total Shots]
FROM [Raw Scores]
WHERE [Round Number] = [Enter Round Number:]
GROUP BY [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number]
PIVOT [Raw Scores].[Hole ID];

[Raw Scores].[Round Number] 是另一个 table 中的列，其中包含数据。
this.[Enter Round Number:] 然而，是一个参数。

问题：

我想做的是按获得分数的回合对所有分数进行排序，但是，WHERE 子句似乎有问题。
每当使用非列名时，它都会吐出以下错误：

但是，当使用一个明确的值（一个写在查询中而不是参数）时，查询运行得很好。

TRANSFORM Sum([Raw Scores].[Raw Score]) AS SumOfScore
SELECT [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number], Sum([Raw Scores].Score) AS [Final Score], Sum([Raw Scores].[Raw Score]) AS [Total Shots]
FROM [Raw Scores]
WHERE [Round Number] = 1
GROUP BY [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number]
PIVOT [Raw Scores].[Hole ID];

注：[Raw Scores]为查询。将带有参数的 WHERE 子句添加到该查询会产生非常好的结果，但是当与上述查询结合使用时，它会显示错误消息（如上图所示）...

这是 [Raw Scores] 查询，其参数有效（并且其中有一个未知变量）：

SELECT Scores.PlayerID, Scores.Score AS [Raw Score], Scores.[Hole ID], Holes.Par, IIf([Raw Score]=0,Holes.Par,[Raw Score]-Holes.Par) AS Score, Players.[First Name], Players.[Last Name], Scores.[Round Number], Players.Country
FROM (Scores INNER JOIN Holes ON Scores.[Hole ID] = Holes.[Hole Number]) INNER JOIN Players ON Scores.PlayerID = Players.[Player ID]
WHERE [Round Number] = [Enter Round Number:];

更新： 未将参数定义为字段似乎解决了问题，但为了可读性，我仍然需要它显示正确的名称。

TRANSFORM Sum([Raw Scores].[Raw Score]) AS SumOfScore
SELECT [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number], Sum([Raw Scores].Score) AS [Final Score], Sum([Raw Scores].[Raw Score]) AS [Total Shots]
FROM [Raw Scores]
WHERE [Round Number] = ?
GROUP BY [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number]
PIVOT [Raw Scores].[Hole ID];

问题：

如何使查询工作；求值？

像这样：

Answer 1

问题是

WHERE [Round Number] = [Enter Round Number:]

然后它将 [Enter Round Number:] 视为表达式或值，看起来两者都不是，因此您会收到您提到的错误。

您需要为 [Enter Round Number:] 表达式提供适当的值。您可以将值传递到参数中，然后就可以使用它了。您可以使用 QueryDefs，然后使用参数创建查询。

Imports Data.OleDb

dim cmd as new OleDbCommand
cmd.Connection = con
cmd.CommandType = CommandType.Text
cmd.CommandText = "SELECT [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number], Sum([Raw Scores].Score) AS [Final Score], Sum([Raw Scores].[Raw Score]) AS [Total Shots]
FROM [Raw Scores]
WHERE [RoundNumber] = ?
GROUP BY [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores]. [Last Name], [Raw Scores].[Round Number]
PIVOT [Raw Scores].[Hole ID];"

cmd.Parameters.Add("@RoundNumber", OleDbType.VarChar).value = "RoundNumber"

Dim da as new OleDbDataAdapter(cmd)

Answer 2

显然，你所要做的就是嵌套它来消除它在检查它是否是一个字段时的混乱。

PARAMETERS [Enter Round Number:] Value;
TRANSFORM Sum([Raw Scores].[Raw Score]) AS SumOfScore
SELECT [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number], Sum([Raw Scores].Score) AS [Final Score], Sum([Raw Scores].[Raw Score]) AS [Total Shots]
FROM [Raw Scores]
WHERE ((([Raw Scores].[Round Number])=[Enter Round Number:]))
GROUP BY [Raw Scores].PlayerID, [Raw Scores].[First Name], [Raw Scores].[Last Name], [Raw Scores].[Round Number]
PIVOT [Raw Scores].[Hole ID];

WHERE 子句具有有效的无效参数

WHERE clause has a valid invalid parameter

sql

oledb

ms-access

问题：

问题：