2011-01-11 43 views
2

是否有空格或其他非打印字符可以插入到不會被刪除並導致NULL的varchar2列中?在Oracle 11g中的varchar2中存在的空格字符在SSRS 2008中顯示

我只想在列中插入一個空白,以便它在SSRS 2008報告中不顯示任何內容。該列是PK的一部分,因此它不能爲NULL。當然,使用''不起作用,因爲它在Oracle中被視爲NULL,並且' '不起作用,因爲它的varchar2和trimmed爲NULL。

那麼是否存在一個我可以插入的字面值,它將在SSRS中顯示爲無,但也可以插入Oracle 11g中的不可爲空的varchar2列?

想了一會兒,我猜想像一個製表符可以完成這項工作。但我期待您的建議。

UPDATE

哎呦。猜猜修剪行爲是從哪裏來的?我自己的RTRIM!對於那個很抱歉。我們只是說我被甲骨文的缺乏經驗所誤導,而我對此的失望導致我決定錯誤發生在產品而不是我的查詢中。但是,嘿,這不完全是一個簡單的查詢。

INSERT INTO WeeklyInvoice (GUID, Mo, VendorName, CostCenter, WkNum, Amt) 
SELECT 
    ExecID, 
    Mo, 
    VendorName, 
    CostCenter, 
    WkNum, 
    Amt 
FROM (
    WITH CostCenters AS (
     SELECT REGEXP_SUBSTR(CostCenterList, '[^,]+', 1, LEVEL) CostCenter 
     FROM DUAL 
     CONNECT BY LEVEL <= Length(CostCenterList) - Length(Replace(CostCenterList, ',', '')) + 1 
    ), Invoices AS (
     SELECT 
     TRUNC(I.Invoice_Dte, 'MM') Mo, 
     (TRUNC(I.Invoice_Dte, 'W') - TRUNC(I.Invoice_Dte, 'MM'))/7 + 1 WkNum, 
     I.Vendor, 
     V.Vendor_VName, 
     RTrim(D.Dis_Acct_Unit) CostCenter, 
     D.To_Base_Amt 
     FROM 
     CostCenters CC 
     CROSS JOIN prod.IcCompany C 
     INNER JOIN prod.ApDistrib D 
      ON C.Company = D.Company 
      AND D.Dis_Acct_Unit = CC.CostCenter 
     INNER JOIN prod.ApInvoice I 
      ON D.Invoice = I.Invoice 
      AND D.Vendor = I.Vendor 
      AND D.Suffix = I.Suffix 
      AND D.Company = I.Company 
     INNER JOIN prod.ApVenMast V ON I.Vendor = V.Vendor 
     WHERE 
     D.Cancel_Seq = 0 
     AND I.Cancel_Seq = 0 
     AND I.Invoice_Dte >= ADD_MONTHS(FromDate, -2) 
     AND I.Invoice_Dte < ToDate 
    ), Months AS (
     SELECT ADD_MONTHS(FromDate, LEVEL - 1) Mo 
     FROM DUAL 
     CONNECT BY LEVEL <= MONTHS_BETWEEN(ToDate, ADD_MONTHS(FromDate, -2)) 
    ), Names AS (
     SELECT DISTINCT 
     I.Mo, 
     I.Vendor, 
     I.Vendor_VName, 
     I.CostCenter 
     FROM Invoices I 
     UNION ALL 
     SELECT M.Mo, '0', 'No Paid Invoices', ' ' 
     FROM Months M 
     WHERE 
     NOT EXISTS (
      SELECT I.* 
      FROM Invoices I 
      WHERE I.Mo = M.Mo 
     ) 
    ), Weeks AS (
     SELECT LEVEL WkNum FROM DUAL CONNECT BY LEVEL <= 5 
    ) 
    SELECT 
     N.Mo, 
     N.Vendor_VName VendorName, 
     N.CostCenter, 
     W.WkNum, 
     Sum(I.To_Base_Amt) Amt 
    FROM 
     Names N 
     INNER JOIN Weeks W 
     ON W.WkNum < 5 
     OR EXTRACT (MONTH FROM (N.Mo + 28)) = EXTRACT (MONTH FROM N.Mo) 
     LEFT JOIN Invoices I 
     ON N.CostCenter = I.CostCenter 
     AND N.Vendor = I.Vendor 
     AND N.Mo = I.Mo 
     AND W.WkNum = I.WkNum 
    GROUP BY 
     N.Mo, 
     N.Vendor_VName, 
     N.CostCenter, 
     W.WkNum 
) X; 
+0

由於該列是一個PK並且不能爲空,您爲什麼要插入一個空格呢?數據模型不正確,或者只是報告問題可以在報告中處理。 – 2011-01-11 20:37:23

+0

由於報表使用矩陣(即它支持數據),因此當整個數據時間段爲空時,報表根本不顯示任何內容。這是不可取的。相反,我需要爲每週列設置一行,以便在所有4或5周內顯示該期間的「無支付的發票」。因此,我是UNION ALL在沒有發票的情況下選擇一個「種子行」來使用。在該種子行中,沒有賬戶單位。所以在這種情況下它是正確的空白,而不是空白。該表不適用於持久性存儲,但僅作爲報表的臨時表。 – ErikE 2011-01-12 01:35:39

回答

2

在下面我的測試中,空單未轉換爲空:

SQL> CREATE TABLE t (col VARCHAR2 (10) NOT NULL); 

    Table created. 

    SQL> INSERT INTO t (col) 
    2  VALUES (' '); 

    1 row created. 

    SQL> SELECT CASE col WHEN ' ' THEN 'I am a single space' ELSE 'I am not a space' END AS col FROM t; 

    COL 
    ------------------- 
    I am a single space 

    1 row selected. 

    SQL> SELECT LENGTH (col) FROM t; 
    LENGTH(COL) 
    ----------- 
      1 

    1 row selected. 

你插入之前修剪值是多少?