如何在變量達到最大長度時對輸入進行分割

Question

我正在編寫一個程序，它將其他程序的主體和 作爲文本文件在本地存儲在我的設備中。

它正常工作時，我使用了大量的程序在這種情況下會被截斷除外。請注意我使用nvarchar（最大）。 有沒有解決問題的建議？

這是過程的一部分：

DECLARE @V_STRING NVARCHAR(MAX)='' 
DECLARE @V_Table TABLE (ID INT IDENTITY(1,1),LINE NVARCHAR(MAX)) 
IF @V_TYPE ='P'--PROCEDURES 
    BEGIN 
     SET @V_PATH=@V_PATH+'4.PROCEDURES' 
     EXECUTE SP_CreateFolder @V_PATH,@P_DataBase 
     SET @V_TYPE='\CREATE PROCEDURES'+'.sql' 
     SET @V_STRING='USE ['+@P_NewDB+']; 
     GO 
     IF EXISTS (SELECT name from sys.objects where name='''+@P_ObjectName+''' AND TYPE=''P'') 
     BEGIN 
     DROP PROCEDURE ' +@P_ObjectName +' 
     END 
     GO' 
    END 
     SET @V_CheckType='USE '+@P_DataBase+'; EXECUTE SP_HELPTEXT '+@V_Objec --@v_object refer to the name of procedure and @P_DataBase refer to database which the procedure belong 
      INSERT INTO @V_Table (LINE)--get the body of given object and store in variable table by using sp_HELPTEXT dictionary 
       EXECUTE (@V_CheckType) 

      INSERT INTO @V_Table (LINE) 
       VALUES (' GO ') 


      SELECT @V_STRING=@V_STRING+LINE FROM @V_Table 
      Execute SP_WriteToFile @V_PATH , @V_STRING --this procedure will create a text file in the path just created 

Answer 1

sp_helptext的返回的255個字符的每個（如果定義是超過255個字符）的多個行; 嘗試使用sys.sql_modules或OBJECT_DEFINITION相反，定義將在單行的話，並更容易地工作着：

 SET @V_STRING='USE ['+@P_NewDB+']'; 

    SET @V_CheckType='USE '+@P_DataBase+'; select definition from sys.sql_modules where object_id = object_id('''+@V_Objec + ''')' --@v_object refer to the name of procedure and @P_DataBase refer to database which the procedure belong 
     INSERT INTO @V_Table (LINE)--get the body of given object and store in variable table by using sp_HELPTEXT dictionary 
      EXECUTE (@V_CheckType) 


     SELECT @V_STRING=@V_STRING+LINE + CHAR(10) + 'GO' FROM @V_Table 

     --SELECT @V_STRING 

     Execute SP_WriteToFile @V_PATH , @V_STRING