按字母順序對DataAdapter進行排序-VB.Net

Question

這應該是一個相當簡單的。 我正在創建一個數據集，其中包含一個我想要排序的描述字段。 我想對dataadapter而不是在我的SQL中排序的原因是我已經按具有特定值的結果排序。

我的SQL看起來像這樣：

SELECT pif_desc, pif_fund, psf_end, (CASE WHEN SUM(pmi_units) IS Null THEN 0 ELSE SUM(pmi_units) END) As fundunits 
    FROM tbl_mem INNER JOIN tbl_sfunds
    ON pm_scheme = psf_scheme
    INNER JOIN tbl_invfun
    ON tbl_fund = tbl_fund
    LEFT JOIN pe_minv
    ON pmi_fund = pif_fund AND pm_member = pmi_member
    WHERE pm_member = @pm_member 
    GROUP BY pif_desc, pif_fund, psf_end
    ORDER BY fundunits DESC

我的VB看起來像這樣：

Dim cmd As New SqlCommand("getMembersFundsDCGENST", conn)
        cmd.CommandType = CommandType.StoredProcedure

        Dim p_pm_member As New SqlParameter("@pm_member", SqlDbType.Int)
        p_pm_member.Value = pm_member
        cmd.Parameters.Add(p_pm_member)

        Dim p_period_closing_date As New SqlParameter("@closingdate", SqlDbType.DateTime)
        p_period_closing_date.Value = period_closing_date
        cmd.Parameters.Add(p_closing_date)

        Dim da As New SqlDataAdapter(cmd)
        da.Fill(ds)

我想通過pif_desc對datarows進行排序是ds.tables（0），但仍然首先列出基金單元> 0的行。

我也願意就如何實現正確訂購提出其他建議。

Answer 1

每當在代碼中進行排序或過濾時，都應使用DataView 。 看一看。

Answer 2

您正在尋找的輸出更像是這樣嗎？

pif_desc    fundunits
ABCDEF      6
CBCDEG      2
DEFGHI      4
ADFKHG      0
BFJSKL      0
XDFDKF      0

如果是這樣，請嘗試以下SQL查詢：

SELECT  pif_desc,
        pif_fund,
        psf_end,
        (CASE WHEN fundunits IS Null THEN 0
        ELSE fundunits END) As fundunits,
        (CASE WHEN fundunits IS Null THEN 0
        ELSE 1 END) As pif_order
FROM    (
            SELECT  pif_desc,
                    pif_fund,
                    psf_end,
                    SUM(pmi_units) As fundunits
            FROM    tbl_mem
            INNER   JOIN tbl_sfunds
                    ON pm_scheme = psf_scheme
            INNER   JOIN tbl_invfun
                    ON tbl_fund = tbl_fund
            LEFT    JOIN pe_minv
                    ON pmi_fund = pif_fund AND pm_member = pmi_member
            WHERE   pm_member = @pm_member 
            GROUP   BY pif_desc, pif_fund, psf_end
        ) pifs
ORDER   BY pif_order,pif_desc