Delete Doesn't Delete Rows, But @@ROWCOUNT Says It Did
Aug 20, 2007
I ran the following query in Query Analyzer on a machine running SQL Server 2000. I'm attempting to delete from a linked server running SQL Server 2005:
DELETE FROM sql2005.production.dbo.products
WHERE vendor='Foo'
AND productId NOT IN
(
SELECT productId FROM sql2000.staging.dbo.fooProductList
)
The status message (and @@ROWCOUNT) told me 8 rows were affected, but nothing was actually deleted; when I ran a SELECT with the same criteria as the DELETE, all 8 rows are still there. So, once more I tried the DELETE command. This time it told me 7 rows were affected; when I ran the SELECT again, 5 of the rows were still there. Finally, after running this exact same DELETE query 5 times, I was able to remove all 8 rows. Each time it would tell me that a different number of rows had been deleted, and in no case was that number accurate.
I've never seen anything like this before. Neither of the tables involved were undergoing any other changes. There's no replication going on, or anything else that should introduce any delays. And I run queries like this all day, involving every thinkable combination of 2000 and 2005 servers, that don't give me any trouble.
Does anyone have suggestions on what might cause this sort of behavior?
I'm using SqlDataSource and an Access database. Let's say I got two tables:user: userID, usernamemessage: userID, messagetextLet's say a user can register on my website, and leave several messages there. I have an admin page where I can select a user and delete all of his messages just by clicking one button.What would be the best (and easiest) way to make this?Here's my suggestion:I have made a "delete query" (with userID as parameter) in MS Access. It deletes all messages of a user when I type in the userID and click ok.Would it be possible to do this on my ASP.net page? If yes, what would the script look like?(yes, it is a newbie question)
HiI'm using a simple SqlDataSource to connect to a stored proc to delete a number of rows from different tables.In my SQL im using: DECLARE @table1Count int
DELETE FROM Table1 WHERE id = @new_id
SET @table1Count=@@rowcount
SELECT @table1Count I'm then using an input box and linking it to the delete control parameter. Then on a button click event i'm running SqlDataSource1.Delete() which all works fine. But how do i get the @table1Count back into my aspx page? Thanks
I am in the process of developing a custom component. During that time I went through many versions of my custom component, including various DLL names and signatures, different code etc.
The problem is that now I have old versions of my custom components stuck in the default settings of the toolbox. When I reset the toolbox, even if I manually deleted the old items, it appears again.
I tried to delete all the DLLs I previously copied to the SQL Server directories, and also uninstalled all the DLLs from GAC.
The result was that the new components didn't appear, and I don't have the option to choose them in the "choose items" menu, but they still appear on the toolbox.
It is not something I can't live with, but it's really annoying seeing old and irrelevant versions right in your face...
Hi, i defined a sqldatasource in VWD manually (option specify sql statement) because several tables are involved. I also need a Delete statement, so i defined it also manually. The select and delete statement are : <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:test %>" SelectCommand="SELECT aspnet_Users.UserName as lid, aspnet_Roles.RoleName as categorie, aspnet_Users.beheerder as beheerder, aspnet_Membership.Email as emailadres FROM aspnet_Users INNER JOIN aspnet_Membership ON aspnet_Users.UserId = aspnet_Membership.UserId INNER JOIN aspnet_UsersInRoles ON aspnet_Users.UserId = aspnet_UsersInRoles.UserId inner JOIN aspnet_Roles ON aspnet_UsersInRoles.RoleId = aspnet_Roles.RoleId order by username" DeleteCommand="delete from aspnet_users where userid=@userid"> <DeleteParameters> <asp:Parameter Name="userid" /> </DeleteParameters> </asp:SqlDataSource> My problem is that the Select works, but not the Delete. Any idea why? Thanks tartuffe
I had created a trigger which sees that whether a database is updated if it is its copy the values of the updated row into another control table now I want to read the content of control_table into BIzTalk and after reading I want to delete it.Can any one suggest the suitable ay to do this?
I have a SQL script to insert data into a table as below:
INSERT into [SRV1INS2].BB.dbo.Agents2 select * from [SRV2INS14].DD.dbo.Agents
I just want to set a Trigger on Agents2 Table, which could delete all rows in the table , before carry out any Insert operation using above statement.I had below Table Trigger on [SRV1INS2].BB.dbo.Agents2 Table as below: But it did not perform what I intend to do.
USE [BB] GO /****** Object: Trigger Script Date: 24/07/2015 3:41:38 PM ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON
I have some simple files but they are failing because the delete history task is failing as it is looking for files in a non existent directory.
It is looking for files in C:Program FilesMicrosoft SQL ServerMSSQL10_50.INSTANCEMSSQLLog whereas it should be looking in C:Program FilesMicrosoft SQL ServerMSSQL10_50.MSSQLSERVERMSSQLLog
how I can get this corrected so I can get the Maintenance Plans to run correctly.
I have tried deleting and recreating the Plan but to no avail
I am using Master Data Service for couple of months now. I can load, update, merge and soft delete data in MDS. Occasionally we even have to hard delete data from MDS. If we keep on soft deleting records in a MDS table eventually there will be huge number of soft deleted records. Is there an easy way to hard delete all the soft deleted records from all MDS tables in a specific Model.
Background: Am working on completing an ORM that can not only handles CRUD actions -- but that can also updates the structure of a table transparently when the class defs change. Reason for this is that I can't get the SQL scripts that would work for updating a software on SqlServer to be portable to other DBMS systems. Doing it by code, rather than SQL batch has a chance of making cross-platform, updateable, software...
Anyway, because it needs to be cross-DBMS capable, the constraints are that the system used must work for the lowest common denominator....ie, a 'recipe' of steps that will work on all DBMS's.
The Problem: There might be simpler ways to do this with SqlServer (all ears :-) - just in case I can't make it cross platform right now) but, with simplistic DBMS's (SqlLite, etc) there is no way to ALTER table once formed: one has to COPY the Table to a new TMP name, adding a Column in the process, then delete the original, then rename the TMP to the original name.
This appears possible in SqlServer too --...as long as there are no CASCADE operations. Truncate table doesn't seem to be the solution, nor drop, as they all seem to trigger a Cascade delete in the Foreign Table.
So -- please correct me if I am wrong here -- it appears that the operations would be along the lines of: a) Remove the Foreign Key references b) Copy the table structure, and make a new temp table, adding the column c) Copy the data over d) Add the FK relations, that used to be in the first table, to the new table e) Delete the original f) Done?
The questions are: a) How does one alter a table to REMOVE the Foreign Key References part, if it has no 'name'. b) Anyone know of a good clean way to get, and save these constraints to reapply them to the new table. Hopefully with some cross platform ADO.NET solution? GetSchema etc appears to me to be very dbms dependant? c) ANY and all tips on things I might run into later that I have not mentioned, are also greatly appreciated.
I am having great difficulty with cascading deletes, delete triggers and referential integrity.
The database is in First Normal Form.
I have some tables that are child tables with two foreign keyes to two different parent tables, for example:
Table A / Table B Table C / Table D
So if I try to turn on cascading deletes for A/B, A/C, B/D and C/D relationships, I get an error that I cannot have cascading delete because it would create multiple cascade paths. I do understand why this is happening. If I delete a row in Table A, I want it to delete child rows in Table B and table C, and then child rows in table D as well. But if I delete a row in Table C, I want it to delete child rows in Table D, and if I delete a row in Table B, I want it to also delete child rows in Table D.
SQL sees this as cyclical, because if I delete a row in table A, both table B and table C would try to delete their child rows in table D.
Ok, so I thought, no biggie, I'll just use delete triggers. So I created delete triggers that will delete child rows in table B and table C when deleting a row in table A. Then I created triggers in both Table B and Table C that would delete child rows in Table D.
When I try to delete a row in table A, B or C, I get the error "Delete Statement Conflicted with COLUMN REFERENCE". This does not make sense to me, can anyone explain? I have a trigger in place that should be deleting the child rows before it attempts to delete the parent row...isn't that the whole point of delete triggers?????
This is an example of my delete trigger:
CREATE TRIGGER [DeleteA] ON A FOR DELETE AS Delete from B where MeetingID = ID; Delete from C where MeetingID = ID;
And then Table B and C both have delete triggers to delete child rows in table D. But it never gets to that point, none of the triggers execute because the above error happens first.
So if I then go into the relationships, and deselect the option for "Enforce relationship for INSERTs and UPDATEs" these triggers all work just fine. Only problem is that now I have no referential integrity and I can simply create unrestrained child rows that do not reference actual foreign keys in the parent table.
So the question is, how do I maintain referential integrity and also have the database delete child rows, keeping in mind that the cascading deletes will not work because of the multiple cascade paths (which are certainly required).
I'm trying to clean up a database design and I'm in a situation to where two tables need a FK but since it didn't exist before there are orphaned records.
Tables are:
Brokers and it's PK is BID
The 2nd table is Broker_Rates which also has a BID table.
I'm trying to figure out a t-sql statement that will parse through all the recrods in the Broker_Rates table and delete the record if there isn't a match for the BID record in the brokers table.
I know this isn't correct syntax but should hopefully clear up what I'm asking
Hi All,I am designing a purge process for a db that has grown to almost 200GB.My purge process will remove about 1/3 of the 500 million rows spreadover seven tables. Currently there are about 35 indexes defined onthose seven tables. My question is will there be a performance gain bydropping those indexes, doing my purge, and re-creating the indexes. Iam afraid that leaving those indexes in place will create a lot ofextra overhead in my delete statements by having to maintain theindexes. I know that it could take many hours to rebuild the indexesafterward, but I am planning on doing that anyway. The reason that Iwant to know whether I should drop the indexes ahead of time, is I maynot be able to do the entire purge at once and the tables may need tobe accessed between purges. If this occurs, I will need to have thoseindexes in place.So do I drop the indexes before the purge and re-create them later ordo I leave them in place and re-index them afterward?Thanks In Advancep.h.
Hi, I'm really not very good at SQL sadly, so would really appreciate any help. I'm basically working on a website that has a chatroom. I want it so the chatroom table only holds, say 15 lines of chat, then once a new line of chat is entered the last line in the table is deleted, so the table always has a maximum of just 15 rows. The fields are: MessageID Poster Message DateTime I've tried my best, but just don't know how to do it. I suppose it's something like: SELECT TOP 15 * FROM Chatroom ORDER BY MessageID DESC - this gives me the last 15 rows. Then I need a delete statement to delete the rest?! Sorry, I am very bad at SQL, so any help would be great. This is written in a stored procedure. Can the stored procedure pick up whether there are 15 or more rows in the table, and if so then delete all bar the newest 15 rows of chat? To summarise: I want a stored procedure that checks if 15 or more rows exist, if they do then delete all bar the newest 15 rows. Thanks, Ricky
there are 500000 rows that has projektID=5.. and when i run the query the hardrive is working for a couple of minutes and then stops. and NOTHING has happened. not a single row has been deleted?.. cant the DELETE statement handle that many rows or?. or is there another way i can delete these rows?.
Hii want to delete a row in my database but the problem is, i cant delete it as other table rows is linked to it. I have to delete all the rows thats linked to the row i wanna delete first.Is there a easier way to delete the row and all the rows thats linked to it? i wanna code it to do it.an suggestions?
CAN ANYBODY REPLY FOLLOWING QUESTIONS. I WANT TO DELETE DUPLICATE ROWS IN MY TABLE WITHOUT USING TRANSACTION TABLE. AND ONE MORE QUESTION HOW TO GET YESTERDAY DATE BY USING ISQL WINDOW.
In my table I have following current data. I want to delete duplicate records from table.I am trying following SQL statement, So I am getting desired output which is orange color in current data. I want to keep the desired output records and other all should be deleted. But complection is that in current data values in C5 and C6 are different.
select C1,C2,C3,C4,COUNT(*) from table_Delete group by C1,C2,C3,C4 having COUNT(*) >= 1 ORDER BY COUNT(*) DESC
declare @a1 table (id int not null identity(1,1), phone decimal(18,0), adress nvarchar(100)) insert @a1 (phone,adress)
[Code] ....
id phone address ----------- --------------------------------------- ---------------------------------------------------------------------------------------------------- 1 111 new york 2 111 new york 3 111 new york 4 222 maxico 5 222 mexico
select phone,count(phone) as say from @a1 group by phone having count(phone)>1
phone say --------------------------------------- ----------- 111 3 222 2
How can I remove duplicate phone. For example
after delete select*from @a1 select*from @a1
id phone address ----------- --------------------------------------- ---------------------------------------------------------------------------------------------------- 1 111 new york 4 222 maxico
I wrote this to show for example in my real table have 50000 rows and 1751 duplicate rows.
Hi,I need to delete rows from my user tables dependant upon there nonexistence from another table:delete studentwhere student_id not in (select student_id from tblStudent)The reasons is convoluted, simplest explanation is that our operationalsystem allows the change of business keys. This wreaks havoc in thedata warehouse.So, I'm look for help on how I can delete rows from tables that have acolumn STUDENT_ID. I'd like the script to search for the tables, thenperform the delete.I don't know where information about user tables are stored, nor how toloop through the results to do the delete.Any Ideas are appreciated.
