将查询mysql更新到VB.net

Question

我在mysql上尝试了这个查询，它完美无缺。

UPDATE tblstocklog 
SET quantity = quantity - 5
WHERE(ProductNo = 25370)
AND quantity >= 5
ORDER BY StockNo ASC LIMIT 1

但是，当我尝试使用VB.net时，它不会更新也不会给出错误消息。

con3.Open()

query3 = "UPDATE tblstocklog set Quantity = Quantity - '" & txt_qty.Text & _
"' WHERE (ProductNo = '" & txt_pno.Text & _ 
"') AND Quantity >= '" & txt_qty.Text & "' ORDER by StockNo ASC LIMIT 1"

Dim cmd3 As MySqlCommand = New MySqlCommand(query, con3)
Dim i3 As Integer = cmd3.ExecuteNonQuery()
con3.Close()

Answer 1

对不起家伙我匆忙做我的程序，我错过了一个明确的错误。

Dim cmd3 As MySqlCommand = New MySqlCommand(**query**, con3)

查询应该是query3