Question

这是我在postgresql数据库中的插入函数：

Private Sub insertIntoDataBase(date As DateTime, value As String)

    Dim Command As NpgsqlCommand

    Command = New NpgsqlCommand("insert into test_base(date,value) values(" + date + "," + value ")", conn)
    Dim rowsaffected As Int32
    Try
        rowsaffected = Command.ExecuteNonQuery()
        Console.WriteLine("It was added {0} lines in table table1", rowsaffected)
    Catch ex As Exception
        Console.WriteLine(ex.Message)
    End Try

End Sub

我想要做的是插入当前时间戳（在日期字段中），而不传递插入函数中的值。就像字段ID一样，自动插入＆＃34;自动增量＆＃34;。这可能吗？

Answer 1

我不知道postgressql（在mySql中它是可能的）但是在vb.net中，也许你可以这样改变你的代码：

Private Sub insertIntoDataBase(value As String)

Dim Command As NpgsqlCommand
Dim mTS as datetime = DateTime.Now

Command = New NpgsqlCommand("insert into test_base(date,value) values(" + mTS.tostring("yyyy-MM-dd HH:mm") + "," + value + ")", conn)
Dim rowsaffected As Int32
Try
    rowsaffected = Command.ExecuteNonQuery()
    Console.WriteLine("It was added {0} lines in table table1", rowsaffected)
Catch ex As Exception
    Console.WriteLine(ex.Message)
End Try

End Sub

我使用了mySql的时间戳格式：根据需要进行更改。

注意：在你的代码中它缺少一个“+”

使用VB.Net将当前时间戳插入postgresql

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