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Grouping Data


Submitted on: 11/29/2003 1:44:49 AM
By: Thivya Prabakaran 
Level: Intermediate
User Rating: Unrated
Compatibility:SQL Server 2000

Users have accessed this article 627 times.
     Often we have to group certain values by providing their id's. If the id's are seperated by comma's, this function gives you the simple methodology rather than parsing the id's one by one.

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/* ***************************************************************************** Creator Name : Thivya Date : Nov-29-2003 Description : Often we have to group certain values by providing their id's. If the id's are seperated by comma's, this function gives you the simple methodology. Purpose : To Get the student names concatenated by some delimiter Input Details : student id's ,output delimiter Assumption: Input Delimiter is assumed as "," ***************************************************************************** */ CREATE Procedure GroupStudentNames @Student_List Varchar(2000), @Out_Delimiter Varchar(10), as Begin Set NoCount On Declare @Name_List Varchar(6000) Declare @SQLString NVarchar(4000) SET @SQLString = N'Select @Name_OUT = Coalesce(@Name_OUT+@Delimiter,'') + StudentName From Student Where Stud_Id in (' + @Student_List +')' EXECUTE sp_executesql @SQLString, N'@Delimiter Varchar(10),@Name_OUT Varchar(6000) OUTPUT', @Delimiter = @Out_Delimiter,@Name_OUT = @Name_List OUTPUT -- The same query can be done by using EXEC -- sp_executeSQL has advantage than using EXEC -- In sp_executeSQL, SQL server likely to resuse the Execution Plan generated Select @Name_OUT As 'StudentName' -- which gives student names seperated by the given delimiter End

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