[英]Update query mysql to VB.net
I tried this query on mysql and it works perfectly. 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
But when I tried it with VB.net it doesn't update nor give a error message. 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()
Sorry guys I was in a hurry doing my program and I missed a clear error. 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)
query should be query3 查询应该是query3
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