Vb.net 如何在参数化Insert Into语句中使用Select语句

我正在尝试此代码，但出现错误：

Dim cmd3 As OleDbCommand = New OleDbCommand("INSERT INTO Criteria (Calculation, [Interval], Weight) VALUES (?, ?, ?)", Nordeen_Investing_3.con)
    cmd3.Parameters.AddWithValue("@Calculation", Calculation)
    cmd3.Parameters.AddWithValue("@[Interval]", Interval)
    cmd3.Parameters.AddWithValue("@Weight", "(SELECT (Avg(C." & Calculation & " * G.Growth) - Avg(C." & Calculation & ") * Avg(G.Growth)) / (StDevP(C." & Calculation & ") * StDevP(G.Growth)) AS Weight FROM " & Calculation & " AS C INNER JOIN " & Growth_Rate & " AS G " & On_Statement & ")")
    cmd3.ExecuteNonQuery()

这是错误消息：

条件表达式中的数据类型不匹配。

问题在于这一行代码：

cmd3.Parameters.AddWithValue（“@Weight””，“（选择（平均值（C.“&Calculation&“*G.Growth）-Avg（C.”&Calculation&“）*Avg（G.Growth））/（标准差（C.“&Calculation&”）标准差（G.Growth））作为权重_
从“&计算&”作为C_
内部连接“&增长率&”作为G_
“&On_语句（”）

如果我用

Select语句

生成的值替换

Select语句

，那么代码运行正常

我怎样才能让它工作

更新 根据以下建议，我已将代码更改为：

Dim cmd3 As OleDbCommand = New OleDbCommand("INSERT INTO Criteria (Calculation, [Interval], Weight) VALUES (?, ?, (SELECT (Avg(C." & Calculation & " * G.Growth) - Avg(C." & Calculation & ") * Avg(G.Growth)) / (StDevP(C." & Calculation & ") * StDevP(G.Growth)) AS Weight FROM " & Calculation & " AS C INNER JOIN " & Growth_Rate & " AS G " & On_Statement & "))", Nordeen_Investing_3.con)
    cmd3.Parameters.AddWithValue("@Calculation", Calculation)
    cmd3.Parameters.AddWithValue("@[Interval]", Interval)
    cmd3.ExecuteNonQuery()

我在运行新代码时收到此错误：

---

未指定错误

您试图通过子查询插入数据，您进行查询的方式不正确

应该是这样的

INSERT INTO table1
SELECT id FROM table2
WHERE ...

在您的特定情况下，OleDBCommand的查询如下所示

"INSERT INTO Criteria (Calculation, [Interval], Weight)
SELECT ?, ?, (Avg(C." & Calculation & " * G.Growth) - Avg(C." & Calculation & ") * Avg(G.Growth)) / (StDevP(C." & Calculation & ") * StDevP(G.Growth)) AS Weight FROM " & Calculation & " AS C INNER JOIN " & Growth_Rate & " AS G " & On_Statement 

---

您应该将计算第三个参数的查询放在主查询中，而不是作为parameter@EstebanElverdin我接受了你的建议（见原始帖子更新）。我收到了这个错误

未指定的错误
@EstebanElverdin如果我自己运行select语句，它将返回一个没有错误的值。但是当我把它添加到我的
INSERT-INTO语句中时，我得到了错误。