Question

我目前正在从2列的sql数据库填充datagridview，有进入数据库的：

董事会|缺陷

数据：

Board 1 | 1
Board 1 | 1
Board 3 | 1
Board 2 | 1
Board 3 | 1

我收到一个显示此信息的datagridview，但我想添加这些项目，以便datagridview显示。

Board 1 | 2
Board 2 | 1
Board 3 | 2

到目前为止，我的代码如下：

        Try
        connect()

        viewboards.AutoGenerateColumns = True

        cmd.CommandText = "SELECT board, defect FROM [sqlccmdefects]"

        Dim viewboards_dataAdapter = New SqlDataAdapter(cmd.CommandText, con.ConnectionString)
        Dim viewboards_table As New DataTable()
        viewboards_table.Locale = System.Globalization.CultureInfo.InvariantCulture
        viewboards_dataAdapter.Fill(viewboards_table)
        Me.viewboards_bindingsource.DataSource = viewboards_table

        viewboards.DataSource = viewboards_bindingsource

        disconnect()

    Catch ex As Exception
    End Try


    viewboards.Columns(0).Width = 142
    viewboards.Columns(1).Width = 100

    viewboards.Columns(0).HeaderText = "Board:"
    viewboards.Columns(1).HeaderText = "Defect:"


    viewboards.EnableHeadersVisualStyles = False

    viewboards.Rows(0).Selected = True

任何帮助都是brill，非常感谢，皮特

Answer 1

尝试以下查询

select board, count(defect) as defect from [sqlccmdefects] group by board

SQL和显示计数中的计数条目并排

1 个答案: