Selectively Disabling Trigger Recursion
May 3, 2008
I have a bit of an issue with an app I'm working on. The app integrates two different SQL Server applications - both of which employ recursive triggers to some extent. My integration basically serves to establish a link between different tables in the applications, and maintains consistency between the two applications (where common fields exist) by employing INSERT, UPDATE, and DELETE triggers.
In order to prevent infinitely recursive triggers (AppA.TableA's update trigger updates AppB.TableA. AppB.TableA's update trigger updates AppA.TableA...and so on, and so on) I need to be able to somehow selectively prevent these triggers only from executing recursively. For example, if the trigger in AppA is what calls the trigger in AppB, I do not want AppB's trigger to fire (and vice versa).
Further Information:
The apps may be on the same, or different, SQL servers.
I'm fully aware of the database-wide options to disable trigger recursion (ALTER DATABASE), but I can't disable recursion for the balance of the triggers in the databases.
The integration will run on either SQL 2000 or SQL 2005 - and perhaps one server on 2000, and one on 2005 (depending upon the deployment).
I'm perfectly amenable to handling it in the trigger code, if possible, but I'm at a bit of a loss as to how to properly and efficiently manage that.
I know that SQL Server will kill infinitely recursive triggers once it detects them, but that doesn't exactly solve my original problem.
Thanks very much for any input you can offer.
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May 18, 2001
I need to disable a trigger for a week w/o droping it. Is there a way in sql ?
Thanks and nice week-end.
Ivan
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Mar 25, 2003
Hi,
I have a update trigger on a table. Can I disable this trigger for duration of a job which updates this table.
Thanks in advance ...j
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Nov 16, 2000
I want to disable a trigger on a table in a database from inside a stored procedure in another database.
Can I disable then enable? Do I have to drop then recreate the trigger?
How do I code it? I've tried several ways but I can't get it right...
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Aug 3, 2006
I have a scenario whereby I will have 200+ clients putting messages onto a service broker queue. This message will go through a pipes and filters based messaging system, and ultimately the message will pop out the other end.
Here's the question: what is a good way of making sure the same client gets the response to the message he received. Is there anyway I can selectively receive messages from a queue, i.e., pass a correlation id in with the message, and then filter messages based on that id.
Or if someone knows a better way to do it altogether i'd really appreciate it.
Many thanks,
Paul
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Jul 30, 2014
So here is the question, on the last line, MAX(LAST T.LastDate) has a date, or it's NULL.
How can I change the statement to say, IF MAX(LAST T.LastDate) IS NULL use NULL?
SELECT DISTINCT
TOP (100) PERCENT O.CompID, O.Comp_Name, COUNT(DISTINCT O.Comm_Unit) AS Apartments, FL.First_MI, FL.Last_MO, O.Bldg, DATEDIFF(day, FL.First_MI,
FL.Last_MO) AS days, O2.MoveoutDescription
FROM dbo.OccupancyHistory AS O RIGHT OUTER JOIN
(SELECT O.CompID, MIN(FIRST_T.FirstDate) AS First_MI, MAX(LAST_T.LastDate) AS Last_MO, MAX(LAST_T.LAST_ID) AS LAST_ID
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Mar 20, 2007
Based on some report parameters value?
My dataset to display is coming from a stored procedure. Now based on a report parameter which user selects, I want to filter the results being displayed but only if user selects certain value in the parameter drop down. I tried using iif statement and I can use it to filter dataset based on parameter but can't get how NOT to apply the filter for a particular value of the user selected parameter.
Hope I am clear.
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Dec 4, 2007
This might be tricky, but I wanted to know if I can add a row to the table and decide wht keys I want to generate for that row.
For example: I have a table which have 4 different keys. I want to generate only 2 of them for certain rows and all for the remaining rows. Is this possible? This does sound like an advanced feature for sql databases, but its easy to do with custom dbs like berkeley db
Trust me, its a very helpful feature.
Thanx in advance,
Premal
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Apr 24, 2014
I have about 1200 sql files in one of my folders. Almost all of these files do data inserts and updates, so they should be run only once. As and when required I have manually ran around 150 of them already. Whenever I ran any of these scripts, I log that file name into a log table in my sql server including the execution time. Since running 1000+ more files takes a lot of time, I want to automate running of these files through a batch file. But I also want to filter the files that are already run.My file list looks like follows.
InsertToOrderTypes.sql
UpdateClientAddress.sql
DeleteDuplicateOrders.sql
InsertToEmailAddress.sql
ConsolidateBrokerData.sql
UpdateInventory.sql
EliminateInvalidOfficeLocations.sql
My log table in the database looks like this.
select * from sqlfileexecutionlog
FileNameRunTimeResult
---------------------
DeleteDuplicateOrders.sql03/12/2014 14:23:45:091Success
UpdateInventory.sql04/06/2014 08:44:17:176Success
Now I want to create a batch file to run the remaining files from my directory to my sql server. I also want to wrap each of these sql file executions in a transaction and log success/failure along with the runtime and filename into sqlfileexecutionlog table. As I add new sql files into this directory, I should be able to run the same batch file and execute only the sql files that have not bee run.
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Jan 8, 2005
Hi there, Any tips on my problem would be most welcome...
right, the scenario.
A web Blog
blogger1 posts a blog_entry, e.g I love the simpsons
blogger2 comments on that blog_entry, e.g No, I hate the simpsons
Blogger3 comments on that comment, ie, How can you hate the simpsons.
so you can comment on a comment on a comment etc.. lool.
right, i have got two tables... Blog_entry & comment. i need to be able to search for a blog_entry + all the comments on that blog_entry..
at the moment i can search for the comments on the blog_entry using the FK in the comment table.
blog_entry
INSERT INTO Blog_Entry VALUES(0001,'I love the Simpsons');
comments
INSERT INTO Comment VALUES(0001,' No I hate the simpsons, cID 1000);
but i need to be able to search for the comments on comments
INSERT INTO Comment VALUES(0001,' How can you hate the simpsons, cID1000);
hopefully you can see the problem here, with only one comments table how can i get the search for the comment on the comment.. there’s nothing linking them...
I could make a sub comments table, and use a FK (as with the blog_entry & first comment)
but then I would have to make another sub sub table to be able to get those comments on the first sub table... this would go on and on for each comment on comment.
you can see the cID1000 (comment PK) I can't use this to get the comment because its duplicating the PK...
So, I need to be able to search for the comments on comments… eg. I need to be able to search for blogger2, and any comments that were made on his comments.
Someone I know mention using recursion to get the comment on comment info, is this right ?
Hehe, I hope you understand what im asking here… the is my first exploration of SQL, so any tips, hints, would be most welcome….
Thanks loads…
PS: if there anything you don’t understand about what I have written, or what im asking… please say so…
Spence.
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Mar 28, 2008
I have a table
CREATE TABLE [dbo].[chart_hiera2](
[AccessID] [int] NULL,
[ChildID] [int] NULL,
[Child] [varchar](100) NULL,
[ParentID] [int] NULL,
[CGID] [int] NULL,
[Depth] [smallint] NULL,
[Lineage] [varchar](255) NULL,
[node] [bit] NULL,
[PercentOwnership] [varchar](10) NULL,
[Notes] [varchar](80) NULL
) ON [PRIMARY]
I am trying to build the value off hierarchy that will be later inserted in the linage and Depth column. I am trying to do so using recursion . the rulles for recording the linages as as follows Lineage = parent.Lineage + Ltrim(Str(ParentID,6,0)) + '/'
here is my code below
with BuildHierarchy as (
SELECT AN.AccessID,AN.ChildID,AN.Child,AN.ParentID,AN.CGI D, 1 as Depth,AN.Lineage,AN.node,AN.PercentOwnership, AN.Notes
FROM chart_hiera2 as AN WHERE AN.Depth Is Null and AN.AccessID = @accID
union all
SELECT AN.AccessID,AN.ChildID,AN.Child,AN.ParentID,AN.CGI D,Cast(AN.Depth as smallint) +1 ,Cast(BH.Lineage+ Ltrim(Str(AN.ParentID,6,0)) + '/' as varchar(255)),AN.node,AN.PercentOwnership, AN.Notes
FROM chart_hiera2 as AN inner join BuildHierarchy BH on AN.ParentID=BH.ChildID
WHERE AN.Depth>=0 AND AN.Lineage Is Not Null AND AN.Depth Is Null and AN.AccessID = @accID)--@accID --and T.AccessID = @accID)
select * from BuildHierarchy
but it does not increment Depth or builds Lineage .What am I doing wrong?
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Nov 12, 2007
How to write a recursive Procedure in SQL Server to find factorial of 50?
The recursive call is limited to 32..could any one help me out.
Thanks in Advance
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Nov 20, 2007
Guys,
I desperately need your help.
what i need to do is call a function getdate to return dates recursively
like so
classdate=getdate(class#, repeat, sportcategory,date)
while (classdate <yearend)
begin
classdate=getdate(class#, repeat, sportcategory, classdate)
end
I want to use the date returned and keep calling that function till the yearend is reached, to get a bunch of dates
declare @startDate datetime
with cteStartDate as
(
select x= classdate,
repeat,
class#,
sportcategory,
yearend
from sports
union all
select x=getdate( classdate,
repeat,
yearend),
repeat,
class#,
sportcategory,
yearend
from cteStartDate
where x < cteStartDate .yearend
)
I tried using cte for this, it only returns one date for everything, as opposed to an array of dates, how do i solve this problem.Any
insight will be greatly apprecaited.
Thanks
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Apr 28, 2008
Hi there! I have an application that uses stored procedures wuth CTE statements to populate trees from database. Every second I need to populate 100-300 trees each one of them has 15-20 nodes. I checked those procedures with profiler and payed attention that populate procedure with CTE is slower that others (without CTE) per 1000 times! Would procedures with recursion faster than same ones with CTE? I am asking because I read somewhere that CTE is becomes slower while populating little chunks of data. Is that right and I should use recursions?
And second question: here the code -
Code Snippet
;WITH dt (Id, NodeText, PId, State, RowNumber) AS
(
SELECT Id, NodeText, PId, State, ROW_NUMBER() OVER(ORDER BY Id) AS RowNumber
FROM DataTable
WHERE Id = 1
UNION ALL
SELECT d.Id, d.NodeText, d.PId, d.State, ROW_NUMBER() OVER(ORDER BY d.Id) AS RowNumber
FROM DataTable AS d
INNER JOIN dt ON dt.Id = d.PId
)
SELECT * FROM dt
This is how I populate a tree with CTE. Could you give me some example how to do exactly same but with recursion?(without CTE). Thank you!
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Oct 27, 2006
Hi Y'all,I receive an error while using recursion:The maximum recursion 100 has been exhausted before statement completion. Can someone tell me where i can alter the default value?Thanks in advance
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Oct 5, 2007
Hello
Maximum nesting level of recursion in SQL Server 2000 is 32. How much is maximum nesting level in SQL Server 2005?
Thanks
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Jul 31, 2006
I have a multi-level folders table, named folders with attributes of folder_id, parent_id and user_id, and have another table, users, contains all the user_id. I need to list all the users for each folder which has parent_id = 0 and its all sub-folders' users into one table. I have created a function to return a table with folder_id and user_id for one single folder. However, I don't know how to use this function to get the sub-folder's users and merge them together as one single table.
Here is my function:
CREATE FUNCTION [dbo].[FolderUsers] (@fid int) RETURNS Table AS Return (select folder_id, f.user_id from folders f, users u where f.user_id = u.user_id and folder_id = @fid)Go
where @fid is the top folder with parent_id = 0 at here, the next level sub-folder's parent_id would be = @fid.
I am thinking to have recursive call from the parent_id = @fid that returns another table and have to concatenate to the called table. I have been thinking of store procedure, "insert into" and so on, but don't know how to implement it.
Do you have any good inspiration for me? Thank you in advance!
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Apr 17, 2008
// I need to write a query to extract data from two tables where I save information on my tables in one and the relationship between the tables in the second.
//CREATE TABLE [dbo].[tblPages](
// [PageID] [int] NOT NULL,
// [PagePath] [varchar](max) ,
// [MenuName] [nchar](10),
// [Directory] [varchar](15))
//CREATE TABLE [dbo].[tblPageRelation](
// [PageRelationshipID] [int] NOT NULL,
// [TopPageID] [int] NOT NULL,
// [BasePageID] [int] NOT NULL)
// What I would like to do is do the following in SQL is a combination of this
// SELECT * FROM TblPageRelation PR LEFT OUTER JOIN TblPages P on PR.TopPageID = P.PageID
//WHERE P.DIRECTORY = 'MENUBLOCK' UNION SELECT * FROM TblPageRelation PR LEFT OUTER JOIN TblPages P on PR.TopPageID = P.PageID
//WHERE P.DIRECTORY = P.DIRECTORY
//public void recursivemove (String Directory)
// {// Find Rows that Have this Block Name associated with em
// For each returned row find the rows that share the same Directory
// }
//}
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Nov 17, 2004
I am not sure if select recursion is possible and thought I would throw this challenge to the dba community. The preference would be to create a view that does the work on the backend instead of writing frontend VB code.
Below is script that creates and populates a temp table along with the desired result-set.
create table #myTest
([id] int identity (1,1),
[Parent] int ,
minutes smallint
)
insert into #myTest (parent,minutes) values (null,1)
insert into #myTest (parent,minutes) values (1,2)
insert into #myTest (parent,minutes) values (1,4)
insert into #myTest (parent,minutes) values (3,8)
Desired resultset:
id Parent Totalminutes
----------- ----------- -------
1 NULL 15
2 1 2
3 1 12
4 3 8
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Jun 17, 2005
Hi Everybody, I have a table that contains two field Group_ID, ParentGroup_ID this maintains parent Child relation ships between groups now I need a stored procedure in SQL Server that would give the ID's of all Parents of a specified group. it is possible through recursion in stored procedure. I have not much idea of recursion in procedure. Can anybody help, by providing a related sample or code? I would be highly thankful.
Sample
ParentGroup_ID Group_ID
12 8
13 8
14 9
15 12
16 25
0 15
How can I find all the parents of 8 i.e. 12,13,15,0 through procedure and in same format.
RegardsDheeraj Verma
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Jul 20, 2005
I've encountered some strange behavior in a recursive procedure I'mwriting for a bill of materials. First let me ask directly if what Ithink is happening is even possible:It seems like the procedure is not following the recursion in serialorder, but in parallel. In other words, after one instance of theprocedure calls itself, it continues executing lines below therecursion before the recursion is done. Is that possible? I lookedfor SQL Server Options that might deal with recursion or threading butI couldn't find anything.Now let me explain what's happening in terms of the BoM. All the rowsI expect are returned, but not in the correct order. Let's assume thefollowing tree:1|-2| |-5| | |-7| | -8| -6| -9|-3| |-10| |-11| | |-13| | -14| | |-15| | |-16| | -17| -12| -18| -19| -20| |-21| -22-4-23|-24-25-26This is stored in table P using MemberID and ParentID fields. Forexample,MemberID ParentID-------- --------1 NULL2 13 14 15 26 2(etc...)Based on how I wrote the recursion (I will provide the procedurebelow), I would expect output when starting from MemberID of 1 to looklike this:MemberID Depth Sort-------- ----- ----2 1 15 2 27 3 38 3 46 2 59 3 6(etc... basically, the line order of the graphical tree above, or acounter-clockwise traverse around the tree)Instead, I get this (I'll provide the whole thing because I don't seea pattern):MemberID Depth Sort-------- ----- ----2 1 15 2 23 1 210 2 37 3 34 1 36 2 39 3 423 2 48 3 411 2 413 3 512 2 524 3 525 3 618 3 614 3 615 4 719 4 726 4 720 5 816 4 817 4 921 6 922 6 10Call me crazy, but it looks like my tree was parsed in the same orderthat a set of dominos arranged in the same shape would topple. Theonly way I could see that happening is if the recursion is non-linear,allowing both children and siblings to be parsed simultaneously. Itwould also explain why my sort counter didn't increment properly, butthe depth counter is always correct.Now here are the procedures. There's also a Qty column, since this isa BoM after all, but I didn't need to mention it for my illustrationof the problem above.CREATE PROC makebom @root bigint---- This would be called by the client to find all the parts andquantities-- under a specific part (@root)--ASSET NOCOUNT ONCREATE TABLE #result (MemberID bigint, Qty bigint, Depth bigint, sortbigint)EXEC bomrecurse @root, 1, 0SET NOCOUNT OFFSELECT MemberID, Qty, Depth, sort FROM #result ORDER BY sortGOCREATE PROC bomrecurse @root bigint, @depthcounter bigint,@sortcounter bigint---- This is the recursive procedure, called once by makebom, butrecalling-- itself until the whole tree is parsed, filling the #result table--ASDECLARE @memberid bigint, @qty bigint, @nextdepth bigintDECLARE children_cursor CURSOR LOCAL FORSELECT MemberID, Qty FROM PWHERE ParentID = @rootORDER BY MemberIDOPEN children_cursorFETCH NEXT FROM children_cursorINTO @memberid, @qtyWHILE @@FETCH_STATUS = 0BEGINSET @sortcounter = @sortcounter + 1INSERT INTO #result VALUES (@memberid, @qty, @depthcounter,@sortcounter)SET @nextdepth = @depthcounter + 1EXEC bomrecurse @memberid, @nextdepth, @sortcounterFETCH NEXT FROM children_cursorINTO @memberid, @qtyENDCLOSE children_cursorDEALLOCATE children_cursorGOI'm surprised this even worked as well as it did because I'm a newbiewhen it comes to stored procedures and I put this together fromexamples I found around this group, online and in the T-SQL Help. Sofeel free to comment on other aspects of my code or approach, but I'mmost interested in understanding the behavior of this recursion.
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Jun 12, 2006
I have a table describing a hierarchy structure and the number of levels is very large, say 10000. Can I control the recursive CTE to get the first 1000 levels? Thanks!
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Jun 12, 2006
I have a table describing a hierarchy structure and the number of levels is very large, say 10000. Can I control the recursive CTE to get the first 1000 levels? Thanks!
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Sep 22, 2006
Hello my friendsThis is my sql table structureFK = ID int, Empnaam varchar(200), PK = EmpID int With this table, where i insert values, employees can hire other employees. Now i want to see with a function in visual studio who hired who. I get stuck when a person hired more than 1 person....This is my stored procedure :set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO ALTER PROC [dbo].[ShowHierarchy] ( @Root int ) AS BEGIN SET NOCOUNT ON DECLARE @EmpID int, @EmpNaam varchar(30) SET @EmpNaam = (SELECT EmpNaam FROM dbo.Emp WHERE EmpID = @Root) PRINT REPLICATE('-', @@NESTLEVEL * 4) + @EmpNaam SET @EmpID = (SELECT MIN(EmpID) FROM dbo.Emp WHERE ID = @Root) WHILE @EmpID IS NOT NULL BEGIN EXEC dbo.ShowHierarchy @EmpID SET @EmpID = (SELECT MIN(EmpID) FROM dbo.Emp WHERE ID = @Root AND EmpID > @EmpID) END END Thanks in advance!Grtz
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Sep 7, 2015
I have a table (folderstructure) with the following columns:
pcmid, cmid, foldername
pcmid is the parent directory
cmid is the directory
foldername is the name of the directory
e.g. note, number of levels are unknown
cmid pcmid name
1 NULL c:
101 1 level1
201 101 level2
45 101 level2a
56 201 level3
57 201 level3a
I'm looking to create a table that has cmid followed by the full directory path
So either (using above):
cmid path
1 c:
101 c:level1
201 c:level1level2
45 c:level1level2a
56 c:level1level2level3
57 c:level1level2level3a
etc.
OR
cmid 1 2 3 4
1 c:
101 c: level1
201 c: level1 level2
45 c: level1 level2a
56 c: level1 level2 level3
57 c: level1 level2 level3a
etc.
I've can use recursion to allocate a level to each name /cmid/pcmid combination
I could use multiple self joins
Is there a way this can be achieved using pivots or CTE recursion or something else...
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Oct 2, 2014
I have a table :
id + A + B
1 |0,11| 0
2 |0,45| 0,5
3 |0,85| 0,75
I need to calculate the following :
F = 0,85 * ( 1 - 0,75 * ( 1 - 0,45 * ( 1 - 0,5 * ( 1 - 0,11 * ( 1 - 0 )))))
In which F = A3 * ( 1 - B3 * ( 1 - A2 * ( 1 - B2 * ( 1 - A1 * ( 1 - B1 )))))
It seemed quite easy at first glance. I Built it up via string concatenation and thought to execute the dynamic sql with sp_exec and get the result. As I don't like dynamic sql I was wondering If there is any other way..
ALTER PROC [dbo].[Tools_Serial_FE]
AS
BEGIN
DECLARE @IP FLOAT,
@IF FLOAT,
@FE FLOAT,
[Code] ....
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Apr 12, 2002
Please help if you can! I have setup a job that runs every day on an hourly basis. Every morning I find that it's been disabled. The funny thing is is that the schedule is disabled, but the job is not (you see 'Enabled' in the jobs list in EM, but when you view the schedules tab, it's disabled.) Also, it runs a several times before becoming disabled.
TIA,
Colleen
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Jan 9, 2003
I have a server that was being used for logshipping and had
replication set up at some point as well. One of the databases got out
of sync in the logshipping process so I removed logshipping and was
going to reinitialize the database and set up the logshipping again.
The database is in read only mode and when I try to take it out of
read only I get the following message:
Error 5063: Database 'XXXXXXXX' is in warm standby. A warm stanby
database is read-only. ALTER DATABASE statment failed. sp_dboption
command failed.
I have tried to disable replication on the server but get the
following error message:
SQL Server Enterprise Manager could not disable 'SRVXXXX' as a
publisher.
Error 3906: Could not run BEGIN TRANSACTION in database 'XXXXXXX'
because the database is read only.
So my problem is that I can't take the database out of read-only mode
because of replication and I can't disable replication because the
database is in read-only mode.
Has anyone come across this before and how should I resolve it? I
tried dropping the database as well and that didn't work either.
Any ideas or help would be greatly appreciated.
Thanks in advance,
Brad
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Feb 15, 2001
Is there a way to disable a trigger when performing a transaction besides dropping and recreating the trigger? I am trying to perform an insert on a table, and this keeps firing a trigger that I want to disable.
Any help is appreciated.
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May 28, 2008
I have accidentally registered an existing database as a distribution database, which made it a system database.
the data itself is safe and sound, but I want to undo the whole thing.
How can I do this?
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Jun 6, 2008
I have an SQL job that runs a .vbs script. It has the following code:
Cmd2.ActiveConnection = Conn2
Cmd2.CommandText = "USE msdb EXEC sp_update_job @job_name = 'Email Download',@enabled = 0"
Cmd2.CommandType = 1
Cmd2.Execute()
It's not disabling the job. If I execute in Query Analyzer, it works. I'm thinking it might be a permissions issue. Any suggestions?
TIA
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Jul 20, 2005
Hii have a table with primary key defined on col1 and col2. now i want tohave col3 also included in primary key. when i alter the table it givesme error for duplicate rows. there is an option for 'with nocheck' butit only works with check or foreign key constraint. is there any optionin sql server like in oracle 'no validate' which doesnt validate theexisting data and force the data validation from new records.thanxFarid*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Dec 4, 2007
Hi all,
1) Can anybody provide me the script for DISABLING all the jobs in the server and vice versa (i.e.) for enabling also.
2) Script for DISABLING LOGINS and script for ENABLING all Logins.
Its Sql Server 2005
Thanks... Any Help Greatly appreciated.
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