Oracle 11g - 使用回車換行在CLOB中查找記錄

Question

我在Oracle 11g上。我正在嘗試在CLOB字段上執行查找和替換功能（使用REPLACE）。

現在我的CLOB中的數據在其中有CRLF，替換工作得很好，直到我想找到包含CRLF的字符串。

So say the text in my field is: 
---------------------------------- 
Hi there this is some text 
that has CRLFS in it. 
Some other text that 
is there also. 
Have a nice day 

現在我想做的是替換所有這一切的發生，包括CRLFs：

Search Text 
-------------------------------------------------------------------------------- 
Some other text that 
is there also. 

有了這個文本INCLUING的CRLFs：

Replace Text 
------------------------------------ 
Some other text that 
has some new text that is there also. 

也許這將通過例子來最好的解釋

所以這可能會出現：

---------------------------------- 
Hi there this is some text 
that has CRLFS in it. 
Some other text that 
has some new text that is there also. 
Have a nice day 

現在我在存儲過程中執行此操作，搜索文本和替換文本作爲變量進入，但當我嘗試說出％|| ReplaceText || '％'它返回0行。

有沒有人有一個想法如何做到這一點？

這裏是我的存儲過程（iOldResponsibilities是搜索文本，iNewResponsibilities是替換文本：

PROCEDURE FindReplaceResponsibilities (
    iOldResponsibilities IN JP_JOB_FAMILIES.RESPONSIBILITIES%TYPE, 
    iNewResponsibilities IN JP_JOB_FAMILIES.RESPONSIBILITIES%TYPE, 
    oNumRowsUpdated   OUT INTEGER 
) 
IS 

    BEGIN 
     oNumRowsUpdated := 0; 


     SAVEPOINT sp_jf_findrepresp; 

     -- If there is no old text to search for then, 
     -- append the new text to the end of every row. 
     -- Else replace all occurrences of the old text with the new text 
     IF iOldResponsibilities IS NULL THEN 
      UPDATE JP_JOB_FAMILIES 
      SET RESPONSIBILITIES = RESPONSIBILITIES || iNewResponsibilities; 

      oNumRowsUpdated := SQL%ROWCOUNT; 

     ELSE 
      UPDATE JP_JOB_FAMILIES 
      SET RESPONSIBILITIES = REPLACE(RESPONSIBILITIES, iOldResponsibilities, iNewResponsibilities) 
      WHERE RESPONSIBILITIES like '%' || iOldResponsibilities || '%'; 

      -- I have also tried this: 
      --WHERE dbms_lob.instr(RESPONSIBILITIES, TO_CLOB(iOldResponsibilities)) > 0; -- This is a LIKE for CLOBS 

      oNumRowsUpdated := SQL%ROWCOUNT; 

     END IF; 

     RETURN; 

     EXCEPTION 

      WHEN OTHERS THEN 
       BEGIN 
        oNumRowsUpdated := -1; 
        ROLLBACK TO sp_jf_findrepresp; 
        dbms_output.put_line('error: ' || sqlerrm); 
        RETURN; 
       END; 

END FindReplaceResponsibilities; 

文本從一個asp.net應用程序（C＃）作爲字符串值來：

public int FindReplaceJobFamilyResponsibilities(String oldResponsibilities, String newResponsibilities, IDbTransaction transaction = null) 
    { 
     using (IDbCommand cmd = this._dataHelper.GetStoredProcedure(_connectionString, 
      "JP_JOBFAM_PKG.FindReplaceResponsibilities", true)) 
     { 
      _dataHelper.SetParameterValue(cmd, "iOldResponsibilities", oldResponsibilities); 
      _dataHelper.SetParameterValue(cmd, "iNewResponsibilities", newResponsibilities); 
      DataHelperBase.VerifyParameters(cmd.Parameters, false); 
      base.SetExecuteConnection(cmd, transaction); 
      _dataHelper.ExecuteNonQuery(cmd); 

      return Convert.ToInt32(_dataHelper.GetParameterValue(cmd, "oNumRowsUpdated")); 
     } 
    } 

Answer 1

真可謂是壞數據的情況。在我的測試數據庫中的數據已損壞，只有而非CRLFs的LF。

GIGO :-)

感謝您的全力幫助

哦，順便說一句在我的代碼示例中，我使用了INSTR函數而不是類似的函數。如果用戶在文本中輸入％來搜索可能已經搞亂了類似聲明的內容。 （不能過濾出那些因爲％可能是我的數據是有效的字符）

下面是最終代碼：

PROCEDURE FindReplaceResponsibilities (
iOldResponsibilities IN JP_JOB_FAMILIES.RESPONSIBILITIES%TYPE, 
iNewResponsibilities IN JP_JOB_FAMILIES.RESPONSIBILITIES%TYPE, 
oNumRowsUpdated   OUT INTEGER 

） IS

BEGIN oNumRowsUpdated：= 0;

SAVEPOINT sp_jf_findrepresp; 

    -- If there is no old text to search for then, 
    -- append the new text to the end of every row. 
    -- Else replace all occurrences of the old text with the new text 
    IF iOldResponsibilities IS NULL THEN 
     UPDATE JP_JOB_FAMILIES 
     SET RESPONSIBILITIES = RESPONSIBILITIES || iNewResponsibilities; 

     oNumRowsUpdated := SQL%ROWCOUNT; 

    ELSE 
     UPDATE JP_JOB_FAMILIES 
     SET RESPONSIBILITIES = REPLACE(RESPONSIBILITIES, iOldResponsibilities, iNewResponsibilities) 
     WHERE dbms_lob.instr(RESPONSIBILITIES, iOldResponsibilities) > 0; 

     oNumRowsUpdated := SQL%ROWCOUNT; 

    END IF; 

    RETURN; 

    EXCEPTION 

     WHEN OTHERS THEN 
      BEGIN 
       oNumRowsUpdated := -1; 
       ROLLBACK TO sp_jf_findrepresp; 
       dbms_output.put_line('error: ' || sqlerrm); 
       RETURN; 
      END; 

END FindReplaceResponsibilities;

從我的應用程序的代碼是罰款：

public int FindReplaceJobFamilyResponsibilities(String oldResponsibilities, String newResponsibilities, IDbTransaction transaction = null) 
{ 
    using (IDbCommand cmd = this._dataHelper.GetStoredProcedure(_connectionString, 
     "JP_JOBFAM_PKG.FindReplaceResponsibilities", true)) 
    { 
     _dataHelper.SetParameterValue(cmd, "iOldResponsibilities", oldResponsibilities); 
     _dataHelper.SetParameterValue(cmd, "iNewResponsibilities", newResponsibilities); 
     DataHelperBase.VerifyParameters(cmd.Parameters, false); 
     base.SetExecuteConnection(cmd, transaction); 
     _dataHelper.ExecuteNonQuery(cmd); 

     return Convert.ToInt32(_dataHelper.GetParameterValue(cmd, "oNumRowsUpdated")); 
    } 
}