Recursive Stored Procedures
Nov 19, 2003
I've got an application where I need to traverse a "tree" of parent and child relationships. I've got code in my application that does this nicely, and I want to move it to the database in the form of stored procs for a little better performance. The initial way I created it, is that the stored proc creates a cursor for the parent nodes, then calls itself for each child node, and rips through it that way. The problem is is that I get a cursor already exists error. Am I doing something wrong, or is that a limitation of SQL server to only have one named cursor open at a time? Is there a better way to do this?
Thanks in advance...
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Jul 23, 2005
I am having problem to apply updates into this function below. I triedusing cursor for updates, etc. but no success. Sql server keeps tellingme that I cannot execute insert or update from inside a function and itgives me an option that I could write an extended stored procedure, butI don't have a clue of how to do it. To quickly fix the problem theonly solution left in my case is to convert this recursive functioninto one recursive stored procedure. However, I am facing one problem.How to convert the select command in this piece of code below into an"execute" by passing parameters and calling the sp recursively again.### piece of code ############SELECT @subtotal = dbo.Mkt_GetChildren(uid, @subtotal,@DateStart, @DateEnd)FROM categories WHERE ParentID = @uid######### my function ###########CREATE FUNCTION Mkt_GetChildren(@uid int, @subtotal decimal ,@DateStart datetime, @DateEnd datetime)RETURNS decimalASBEGINIF EXISTS (SELECTuidFROMcategories WHEREParentID = @uid)BEGINDECLARE my_cursor CURSOR FORSELECT uid, classid5 FROM categories WHERE parentid = @uiddeclare @getclassid5 varchar(50), @getuid bigint, @calculate decimalOPEN my_cursorFETCH NEXT FROM my_cursor INTO @getuid, @getclassid5WHILE @@FETCH_STATUS = 0BEGINFETCH NEXT FROM my_cursor INTO @getuid, @getclassid5select @calculate = dbo.Mkt_CalculateTotal(@getclassid5, @DateStart,@DateEnd)SET @subtotal = CONVERT (decimal (19,4),(@subtotal + @calculate))ENDCLOSE my_cursorDEALLOCATE my_cursorSELECT @subtotal = dbo.Mkt_GetChildren(uid, @subtotal,@DateStart, @DateEnd)FROM categories WHERE ParentID = @uidENDRETURN @subtotalENDGORod
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Jul 23, 2005
I want to know the differences between SQL Server 2000 storedprocedures and oracle stored procedures? Do they have differentsyntax? The concept should be the same that the stored proceduresexecute in the database server with better performance?Please advise good references for Oracle stored procedures also.thanks!!
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Aug 25, 2015
Msg 240, Level 16, State 1, Line 14
Types don't match between the anchor and the recursive part in column "ParentId" of recursive query "tmp". Below is query,
DECLARE @TBL TABLE (RowNum INT, DataId int, DataName NVARCHAR(50), RowOrder DECIMAL(18,2) NULL, ParentId INT NULL)
INSERT INTO @TBL VALUES
(1, 105508, 'A', 1.00, NULL),
(2, 105717, 'A1', NULL, NULL),
(3, 105718, 'A1', NULL, NULL),
(4, 105509, 'B', 2.00, NULL),
(5, 105510, 'C', 3.00, NULL),
(6, 105514, 'C1', NULL, NULL),
[code]....
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Jul 23, 2004
I'm trying to write a recursive stored proc for the TreeView control that will return XML for the TreeView. Does anyone have any examples of code to do this or any resources that might help me write the stored proc?
Thanks
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Mar 11, 2007
Hi,
I would like some help on a stored recursive procedure I have been working on for my assigment. I had the solution from my course master some time back, but accidentally deleted the file before finishing the course, and would like the solution to that problem.
The questions are as follows:
1) Create a recursive stored procedure that counts from 1 to 10
2) Create a recursive stored procedure that counts from 10 to 1
I believe there's more than one approach in solving these procedures, and any feeback is welcome.
cheers
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Oct 16, 2006
How do I call my Stored Procedure recursively:CREATE PROCEDURE dbo.GetParentIONode(@IONodeID int,@FullNodeAddress char(100) OUTPUT)ASBEGINDECLARE @ParentIONodeID intIF EXISTS (SELECT ParentIONodeID FROM IONodes WHERE IONodeID = @IONodeID)BEGINSET @FullNodeAddress = CAST((SELECT ParentIONodeID FROM IONodes WHEREIONodeID = @IONodeID) AS VARCHAR) + ' / ' + @FullNodeAddress--CALL SP Again with @ParentIONodeID and @FullNodeAddress untilParentIONodeID = NULLSELECT @FullNodeAddressENDENDGO
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Aug 31, 2003
Hi,
I have 2 SQL SERVER tables MSTHDRML (Header table) & MSTDTLML(details Table)
MSTHDRML
MLID int 4
MLITemID int 4
ConcatStringvarchar 20
EffectiveDateFromsmalldatetime
EffectiveDateTodatetime
MSTDTLML
MLID int40
ItemID int40
ConcatStringvarchar201
Qty money81
The MLID in the header table will be generated automatically.All the Parents will be stored in the HEADER and their childs in the DETAIL.When a child is added to a parent,the Parent's MLID will be stored in the MLID field in the DETAIL table with the newly added child.That child will come to the PARENT table when a child is added to that.The MLITEM id in the parent table can be repeated when that item undergoes a rivision.But the MLID for this will be a new one.An item in the Parent Table can have any number of childs and these childs can have any number of children(there is no limit for the level.)
Some Sample Data
MSTHDRML
--------------
MLIDMLITemID ConcatStringEffectiveDateFromEffectiveDateTo
11000 56V 01/06/200331/12/9999
21003 Red 01/08/200331/12/9999
31001 01/08/200331/12/9999
41007 01/08/200331/12/9999
51008 01/08/200331/12/9999
61002 01/08/200331/12/9999
71005 01/08/200331/12/9999
82000 01/08/200331/12/9999
MSTDTLML
--------------
MLIDItemIDConcatStringQty
11001Round 10
11002Square 20
21004Blue 19
11005Green 22
31007Flat 223
41008 100
51009 200
61010 11
71011 22
71010 45
71012 454
82001 5
Now if i select an item id '1000' (for example from the Header Table) with a concatstring (it could be without a concat string also).all its childs and their children should be printed in a report like the following
1000
|
--- 1001
| |
| --1007
| |_ 1008
----1002 |__1009
| |_1010
|
----1005
************************************************** ***************************
I NEED TO CREATE THE TREE USING BOTH THE HEADER(MSTHDRML) AND THE DETAIL TABLE(MSTDTLML)
************************************************** ***************************
How can this be done.Is it necessary to use a recursive function in a stored procedure to generate this ...... i have never used Recursive function in SQL SERVER Stored Procedures.Can anyone help me on this(with Code).if not stored procedure, then what else can be done for this.
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Jul 20, 2005
Hi allI am implementing a stored procedure which needs to recursively callitself until specific condition is reached, Could anyone give someadvice about that?Thanks a lotRobert Song
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Aug 24, 2007
I need to develope a stored procedure (eventually called by a trigger) that creates a record in an event table for all the descendants of a drawing. There are 3 tables involved as example tables shown below:
DwgTable
DwgID (integer)--drawing record identifier
PrntDwgID (integer)--parent drawing record identifier (a previously defined DwgID from this table)
DwgEventTable
DwgEventID (integer)--record identifier
DwgID (integer)--value from DwgTable
EventID (integer)--value from EventTable
EventTable
EventID
There are other fields in two of the tables and only the fields shown in the DwgEventTable, but only the fields shown are required for adding a record in the DwgEventTable for a new event in the EventTable. The problem is identifying all the DwgID's of the descendant of the DwgID where the EventID occurred. There may be 0 to N descendants in 0 to N generations. I need to add a record for the original DwgID and all the descendant DwgID's in the DwgEventTable for the event identified by EventID.
I could do this from the client side, but a better place would be from the server side. I need some clue(s) on how to start coding a recursive stored procedure in SQL Server 2005. From what I have read, you cannot create a managed code procedure that appends or updates records--if managed code can add/modify records then I can do the above with managed code procedure.
Any Suggestions?
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Sep 30, 2006
Hi,
This Might be a really simple thing, however we have just installed SQL server 2005 on a new server, and are having difficulties with the set up of the Store Procedures. Every time we try to modify an existing stored procedure it attempts to save it as an SQL file, unlike in 2000 where it saved it as part of the database itself.
Thank you in advance for any help on this matter
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Jan 17, 2008
I apologize if I posted in the wrong section, but I cannot find a solution to this. I was hoping that some one can help me figure this out.
I need this solution in a stored procedure VS using dataset because there are thousands of categories and it is extremely slow with a dataset.
I have a category table
ID intPARENTID intNAME
SAMPLE DATA:
ID
NAME
PARENT_ID
1
ANIMALS
0
2
DOGS
1
3
CATS
1
4
Abyssinian
3
5
Persian
3
6
Rurkish Van
3
7
Dalmation
2
8
German Shepherd
2
9
Irish Setter
2
10
Bulldog
2
I need the stored proc to return results in a single record set like this:
ANIMALS - DOGS - - Dalmation - - German Shepherd - - Irish Setter - - Bulldog - CATS - - Abyssinian - - Persian - - Turkish Van
Seems fairly easy but I have been battling with this for days now.
Thank you in advance,
EL
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Feb 25, 2008
Hello, I am hoping someone can help me in this. I am looking to write a stored procedure that will return the heirarchy of an organization. I will display how the heirarchy might look and then list the tables involved.
John Smith
- Jacob Jones
- Lisa Thompson
- Samuel Barber
- Paul Smith
- John Jackson
Ok, so Jacob, Lisa, an Samuel report up to John Smith. Paul and John Jackson report up to Samuel Barber.
Here are the tables:
Users holds the user_id, first_name, last_name, and reports_to_user_id.
User_Roles holds the user_id, role_type_id
Role_Types holds the role_type_id, and the type (which could be Administrator, Standard, Guest) for example. In addition, Role_Types also has ranking which must be taken into consideration as well. 1 being the top rank and 9 being the lowest.
Thanks very much in advance,
Saied
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Nov 6, 2007
Using SQL 2005, SP2. All of a sudden, whenever I create any stored procedures in the master database, they get created as system stored procedures. Doesn't matter what I name them, and what they do.
For example, even this simple little guy:
CREATE PROCEDURE BOB
AS
PRINT 'BOB'
GO
Gets created as a system stored procedure.
Any ideas what would cause that and/or how to fix it?
Thanks,
Jason
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Apr 29, 2008
How do I search for and print all stored procedure names in a particular database? I can use the following query to search and print out all table names in a database. I just need to figure out how to modify the code below to search for stored procedure names. Can anyone help me out?
SELECT TABLE_SCHEMA + '.' + TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
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Jun 13, 2007
Seems like I'm stealing all the threads here, : But I need to learn :) I have a StoredProcedure that needs to return values that other StoredProcedures return.Rather than have my DataAccess layer access the DB multiple times, I would like to call One stored Procedure, and have that stored procedure call the others to get the information I need. I think this way would be more efficient than accessing the DB multiple times. One of my SP is:SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, S.Name AS 'StatusName', S.ItemDetailStatusID, S.InProgress as 'StatusInProgress', S.Color AS 'StatusColor',T.[Name] AS 'TypeName', T.Prefix, T.Name AS 'ItemDetailTypeName', T.ItemDetailTypeID FROM [Item].ItemDetails I INNER JOIN Item.ItemDetailStatus S ON I.ItemDetailStatusID = S.ItemDetailStatusID INNER JOIN [Item].ItemDetailTypes T ON I.ItemDetailTypeID = T.ItemDetailTypeID However, I already have StoredProcedures that return the exact same data from the ItemDetailStatus table and ItemDetailTypes table.Would it be better to do it above, and have more code to change when a new column/field is added, or more checks, or do something like:(This is not propper SQL) SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, EXEC [Item].ItemDetailStatusInfo I.ItemDetailStatusID, EXEC [Item].ItemDetailTypeInfo I.ItemDetailTypeID FROM [Item].ItemDetails IOr something like that... Any thoughts?
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May 13, 2008
Greetings:
I have MSSQL 2005. On earlier versions of MSSQL saving a stored procedure wasn't a confusing action. However, every time I try to save my completed stored procedure (parsed successfully ) I'm prompted to save it as a query on the hard drive.
How do I cause the 'Save' action to add the new stored procedure to my database's list of stored procedures?
Thanks!
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Apr 7, 2006
We recently upgraded to SQL Server 2005. We had several stored procedures in the master database and, rather than completely rewriting a lot of code, we just recreated these stored procedures in the new master database.
For some reason, some of these stored procedures are getting stored as "System Stored Procedures" rather than just as "Stored Procedures". Queries to sys.Objects and sys.Procedures shows that these procs are being saved with the is_ms_shipped field set to 1, even though they obviously were not shipped with the product.
I can't update the sys.Objects or sys.Procedures views in 2005.
What effect will this flag (is_ms_shipped = 1) have on my stored procedures?
Can I move these out of "System Stored Procedures" and into "Stored Procedures"?
Thanks!
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Apr 23, 2008
Hello friends......How are you ? I want to ask you all that how can I do the following ?
I want to now that how many ways are there to do this ?
How can I call one or more stored procedures into perticular one Stored Proc ? in MS SQL Server 2000/05.
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Mar 26, 2008
Hello
I'm start to work with SSIS.
We have a lot (many hundreds) of old (SQL Server2000) procedures on SQL 2005.
Most of the Stored Procedures ends with the following commands:
SET @SQLSTRING = 'SELECT * INTO ' + @OutputTableName + ' FROM #RESULTTABLE'
EXEC @RETVAL = sp_executeSQL @SQLSTRING
How can I use SSIS to move the complete #RESULTTABLE to Excel or to a Flat File? (e.g. as a *.csv -File)
I found a way but I think i'ts only a workaround:
1. Write the #Resulttable to DB (changed Prozedure)
2. create data flow task (ole DB Source - Data Conversion - Excel Destination)
Does anyone know a better way to transfer the #RESULTTABLE to Excel or Flat file?
Thanks for an early Answer
Chaepp
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Jun 16, 2007
Hi,
Do you know how to write stored procedures inside another stored procedure in MS SQL.
Create procedure spMyProc inputData varchar(50)
AS
----- some logical
procedure spMyProc inputInsideData varchar(10)
AS
--- some logical
--- go
-------
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May 8, 2008
I am writing a set of store procedures (around 30), most of them require the same basic logic to get an ID, I was thinking to add this logic into an stored procedure.
The question is: Would calling an stored procedure from within an stored procedure affect performance? I mean, would it need to create a separate db connection? am I better off copying and pasting the logic into all the store procedures (in terms of performance)?
Thanks in advance
John
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Nov 1, 2007
Hi all - I'm trying to optimized my stored procedures to be a bit easier to maintain, and am sure this is possible, not am very unclear on the syntax to doing this correctly. For example, I have a simple stored procedure that takes a string as a parameter, and returns its resolved index that corresponds to a record in my database. ie
exec dbo.DeriveStatusID 'Created'
returns an int value as 1
(performed by "SELECT statusID FROM statusList WHERE statusName= 'Created')
but I also have a second stored procedure that needs to make reference to this procedure first, in order to resolve an id - ie:
exec dbo.AddProduct_Insert 'widget1'
which currently performs:SET @statusID = (SELECT statusID FROM statusList WHERE statusName='Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
I want to simply the insert to perform (in one sproc):
SET @statusID = EXEC deriveStatusID ('Created')INSERT INTO Products (productname, statusID) VALUES (''widget1', @statusID)
This works fine if I call this stored procedure in code first, then pass it to the second stored procedure, but NOT if it is reference in the second stored procedure directly (I end up with an empty value for @statusID in this example).
My actual "Insert" stored procedures are far more complicated, but I am working towards lightening the business logic in my application ( it shouldn't have to pre-vet the data prior to executing a valid insert).
Hopefully this makes some sense - it doesn't seem right to me that this is impossible, and am fairly sure I'm just missing some simple syntax - can anyone assist?
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May 15, 2008
i have created the folowing function but keep geting an error.
Only functions and extended stored procedures can be executed from within a function.
Why am i getting this error!
Create Function myDateAdd
(@buildd nvarchar(4), @avdate as nvarchar(25))
Returns nvarchar(25)
as
Begin
declare @ret nvarchar(25)
declare @sqlval as nvarchar(3000)
set @sqlval = 'select ''@ret'' = max(realday) from (
select top '+ @buildd +' realday from v_caltable where realday >= '''+ @avdate +''' and prod = 1 )a'
execute sp_executesql @sqlval
return @ret
end
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Jun 17, 2006
hi
i need to use only one stored procedure and access many tablesso how write a stored procedure for that dohelp me looking forward for a reply to the earliest i am developing web page using asp.net using c# and sqlserver as backend
looking forward for a replygayathri
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Dec 15, 2006
I am interested to know about stored procedures in Mssql .Can anyone please help me out.
Thanx in advance.
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Feb 24, 2007
Hello I have two stored procedures
@ID INT
AS
SELECT (CASE WHEN NUM >= 10 THEN CAST(PAID AS FLOAT) / CAST(NUM AS FLOAT) * 100 WHEN NUM < 10 THEN 0 END) AS PER
FROM (SELECT (SELECT COUNT(*) AS Expr1
FROM Event_data AS D LEFT OUTER JOIN
Events AS E ON E.id = D.Event_id
WHERE (D.Transaction_type = 1) AND (D.Player_id = @ID)) AS NUM,
(SELECT COUNT(*) AS Expr1
FROM Event_data AS D LEFT OUTER JOIN
Events AS E ON E.id = D.Event_id
WHERE (D.Transaction_type = 1) AND (D.Transaction_value > 0) AND (D.Player_id = @ID)) AS PAID) AS X
and
@ID INT
AS
SELECT P.*,'/' + DBO.GETCHIPFOLDER(@ID) + '/' + ISNULL(P.PHOTO,'BLANK.GIF') AS PIC,ISNULL(
(SELECT SUM(TRANSACTION_VALUE)
FROM EVENT_DATA WHERE PLAYER_ID=@ID AND TRANSACTION_TYPE=1
GROUP BY PLAYER_ID),0) AS WINNINGS FROM PLAYERS P
undefined P
The first returns a percentage for player wins, the second gives me a photo and sums the player winnings
I would like to combine the results so I can get the percentage and wininngs in one query, in another matter all together I would like create a procedure like the first but instead of returning only one player, I would like to return the percentage for each player
Thanks in advance for any light you can shine on this.
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Feb 25, 2007
I have a question about stored procedures, Is it better to use stored procedures even if I only use it once at my site? Or is it better to write the sql-part directly in the sqldatasource?
And am I forced to create two different stored procedures even if they are exactly the same except the "Where-part"?
Now I have around 40 stored procedures, and quite many of them looks the same except the where-part...
(Iam just a beginner with SQL)
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May 2, 2007
Hello every one,
I m working in aspx 2.0 with sql server 2005, please tell me how can I create Stored Procedures for two or more tables not a single table(select,insert,update,delete please send me the queries which can help me in easy way I will very thankful to you
Thank you
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Jun 19, 2007
I am learning to make a ASP web site and feel that if i can do it the harder way using some stored procedures instead of using multiple datasources on each page requiring that it might be better. So i am wondering what are these used for:DECLARE vs just entering "@param1 varchar(30)"When i use "DECLARE @rc int" i get the error "Incorrect syntax near DECLARE"How to return values to ASP page in Visual Studio 2005 How to use @@rowcount - doesn't seem to work for me?i tried using DECLARE @rc intSET @rc = @@rowcountWhen to use GO, BEGIN etcIf i want to use the variable only in the procedure, and not needed to be inputed, do i need to put it in the CREATE PROCEDURE (section)?Should i use my own stored procedures or VS2005 created ones using datasources? not really procedures but SQL, in SQL can i do like IF ELSE? if i use my own i cant use the Optimistic Concurrency right? and whats that?
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Jul 5, 2007
Is there a website or somewhere i can go to read up on stored procedures??
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Aug 2, 2007
cREATE PROCEDURE emp @val varchar(50)AS
declare @test varchar(50)declare @a varchar(50)set @a= @val + '_a'set @test = 'alter table dbo.rights_user add ' + @a + ' varchar(50) null'
execute(@test)
GO
this is my procedure...anyth wrong here...i can able to execute procedure only with 3 char..egexec emp 'na'exec emp 'hr10'--->wen i try like this cannot..showing datataype mis match
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