We have one user who enters a transaction and then does a single row
update (updates all columns but only one is changing - this is due to
the way our sql is generated in the application), at this point
another user enter a transaction and tries to update the same row (he
understandably has to sit and wait while he is blocked by the original
user). The original user then updates the same row again – at this
point the second user is chosen as a deadlock victim and killed. If I
try and recreate this with any other tables(or pubs) I get my expected
behaviour of the original user just doing 2 successful updates and the
second user then completing his update once the original user has
either committed his changes or rolled back. The query plan indicates
that a drop and insert of the row is happening (this is not the case
with any other tables where we get our expected behaviour). This only
happens when the index is clustered - if we use a non-clustered index
it does not occur.
Is this expected behaviour? it seems dangerous to me as the first
user has not commited or rolled back his updates. It was only
highlighted by a fault in our application that caused the second
update to be executed.
I have some thoughts about it being something to do with a row lock
being relased due to a delete / insest of the row in the second update
(we see this in the execution plan).....
Any help much appreciated as I am struggling to get my head round how
the second user was ever able to get hold of the resource.
I got a deadlock scenario and so I took a snap shot of the syslockinfo table. I found out an interesting scenario where the deadlock is because of two transactions within the same spid.
For the first one the lock was granted(transactionID:96462284) but for the next one(transactionId:96594607) it was put in wait state and SQL server detected it as a deadlock.
I just wanted some clarifications. 1) what is the significance of req_transactionID column in syslockinfo table? 2) what is the relationship between req_transactionId column and spid column? 3) In case of nested transactions what will be the values of these 2 columns and what will be the relationship between them in that scenario? 4) In this case the deadlock is occurring while executing a SP(the nested level of calls go till 3rd level). 5) Will there be contention for locks between transactions within a single spid.
it is something like this: sp_cache sp_cache1 while sp_cache2 end while
the deadlock occurred when executing sp_cache 2. At that time there were only two transactionId values in the syslockinfo table for this spid,They were: 1) 96462284 2)96594607
If some body could please help me it would be really helpful for me.
Is there a way to send out an email woth deadlock information (victim query, winner query, process id's and resources on which the deadlock occurred) as soon as a deadlock occurs in a database or at instance level?I currently has trace flag 1222 turned on. And also created an alert that send me an email whenever a deadlock occurs. but it just says that a deadlock occurred and I log into sql server error log and review the information.
Now from various links i have established that you have to use DBCC PAGE() with relevant info to get more information, i get back a object and index id, m_objid.
However i dont know how to get the tablename form here, msdn simply says that it is an allocation id not and actual table id, so how can i from here get to table information?
All i am trying to figure out is which table is affected fromt he RID dealock, but that does not seem to be a simple process.
I sometimes get the following error from an update statement in astored procedure:Transaction (Process ID 62) was deadlocked on thread | communicationbuffer resources with another process and has been chosen as thedeadlock victim. Rerun the transaction.The isolation level is READ UNCOMMITTED and there are no explicittransactions in the stored procedure. The update statement is asfollows:UPDATE PLSET PL.PL_SI_LAST_YEAR_AMOUNT = #tmpWorkPLPrior.PRIOR_AMOUNTFROM #tmpWorkPLPriorWHERE PL.COMPANY = @compAND PL.PLAN_YEAR = @yearAND PL.FORECAST_QUARTER = @qtrAND PL.VERSION_ID = @verAND PL.BUSINESS_UNIT_CODE = #tmpWorkPLPrior.BUSINESS_UNITAND PL.PROJECT_ID = #tmpWorkPLPrior.PROJECT_IDAND PL.BUDGET_CODE = #tmpWorkPLPrior.BUDGET_CODEAND PL.BUSINESS_UNIT_CODE <> 'G7'PL rows: 24,342,553PL rows - Filtered: 230,088#tmpWorkPLPrior rows: 3,641Updated rows: 43,692The temp table (#tmpWorkPLPrior) is created by a SELECT INTO statement.It has the values that need to be set in the PL table. The PL tablehas a clustered index on 8 columns. The filters (@comp, @year, ...)select 230,088 rows. When the update succeeds it updates 43,692 rowsin about 15 seconds. Why does this sometimes deadlock and other timessucceed? There is nothing else running, so the process is deadlockingon itself.Thanks,Frank
We wrote some stored procedures, and some temporary table used because there some some complicated logic.
In normal testing, the application works weel, but very easy to get deadlock error in stress testing.
Error message like this: Transaction (Process ID 51) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
Sample code: CREATE TABLE #PageIndexForUsers ( IndexId int IDENTITY (0, 1) NOT NULL, UserId int )
INSERT INTO #PageIndexForUsers (UserId) SELECT USER_ID FROM Users
Other tested functions will insert/update table Users too.
I searched on internet, several people said it's MS bug, anybody help?
I want to set an alert for a specific table whenever an event hascaused a deadlock to occur on the table.I understand how to set up an alert. But I don't know which errornumber to use for the New Alert error number property for a deadlock.Or how to specify a deadlock on a specific table.Thanks,DW
I am getting a number of deadlocks when inserting and deleting items from the same table.
The delete statement has a U lock and awaiting an IX lock on an index that covers the column in the where clause.
The insert statement has a IX lock and awaiting a U lock on the same index.
The delete statement is deleting about 5000 rows, where as the insert statement is inserting a single row.
Both these statements are found in stored procedures being called from LINQ to SQL.
I am wondering if there is a way I can prevent the delete statement taking the U lock out?My thinking being if the delete didn't take out the U lock then it would not deadlock with the insert. Are there any hints I could use to avoid the particular lock above?
I have seen various examples of multiple updates causing a deadlock, which can be fixed by adding multiple indexes. However, as I am inserting and deleting rows I imagine that all the indexes will need to be updated by both operations.
I have inherited the architecture and don't have the time to redesign everything at present. My backup plan is to deprioritize the delete and build in a retry mechanism.
However, it would be really good if I could find a more elegant way to handle deleting and inserting rows at the same time.
I have a source table which I'm splitting 3 ways based on a column value, but the target is the same OLE DB destination table. One conditional path is to a Multi-Cast two way split to same OLE DB gestination table. The default split is to a flat file for logging unknown record types. For a test I have data for only the 3 column values I want, but I'm having trouble with the process completing. If I pre-filter the data going into the source table by one or two values I can get the process to complete even if one split is to the multicast. If I include all three data types in the source table, I get different results depending on the order in which the conditions are specified - sometimes only two split paths are executed; other times all three are executed, but in some cases only one path of the multicast split is executed. In any case, when the three source data types are used in the test, the process never competes - the pathes are in a yellow condition and never complete.
Am I creating some kind of deadlock situation by having the source data directed to the same target table via 4 splits? Any help you can provide is appreciated. Thanks.
I'm trying to insert data into a table from two tables into a single table along with a hard coded value.
insert into TABLE1 (THING,PERSONORGROUP,ACCESSRIGHTS) VALUES ((select SYSTEM_ID from TABLE2 where AUTHOR IN (select SYSTEM_ID from TABLE2 where USER_ID =('USER1'))),(select SYSTEM_ID from TABLE2 where USER_ID =('USER2')),255)
I get the following-
Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
There are 3 tables Property , PropertyExternalReference , PropertyAssesmentValuation which are common for 60 business rule
SELECT   PE.PropertyExternalReferenceValue  [BAReferenceNumber] , PA.DescriptionCode   [PSDCode] , PV.ValuationEffectiveDate   [EffectiveDate] , PV.PropertyListAlterationDate   [ListAlterationDate]
[code]....
Can we push the data for the above query in a physical table and create index to make the query fast rather than using the same set  tables multiple timesÂ
i have 6 table in SQL Server and i have created one view and create single table by linking all the table,now i want to join two column like
Column A and Column B = Column C e.g A B C Atul Jadhav Atuljadhav Vijay vijayvijay
in above exambe column A having firstName and Column B having second name and i want to join this two column in C column "atuljadhav" and if column B is blank then it join A value tow timestriger code as it is auto update column and every time (update, append, modify, delete) it should be update automatic
I have table "Clients" who have associated records in table "Mailings" I want to populate a gridview using a single query that grabs all the info I need so that I may utilize the gridview's built in sorting. I'm trying to return records containing the next upcoming mailing for each client.
The closest I can get is below: I'm using GROUP BY because it allows me to return a single record for each client and the MIN part allows me to return the associated record in the mailings table for each client that contains the next upcoming 'send_date'
SELECT MIN(dbo.tbl_clients.client_last_name) AS exp_last_name, MIN(dbo.tbl_mailings.send_date) AS exp_send_date, MIN(dbo.tbl_mailings.user_id) AS exp_user_id, dbo.tbl_clients.client_id, MIN(dbo.tbl_mailings.mailing_id) AS exp_mailing_idFROM dbo.tbl_clients INNER JOIN dbo.tbl_mailings ON dbo.tbl_clients.client_id = dbo.tbl_mailings.client_idWHERE (dbo.tbl_mailings.user_id = 1000)GROUP BY dbo.tbl_clients.client_id The user_id set at 1000 part is what makes it rightly pull in all clients for a particular user. Problem is, by using the GROUP BY statement I'm just getting the lowest 'mailing_id' number and NOT the actual entry associated with mailing item I want to return. Same goes for the last_name field. Perhaps I need to have a subquery within my WHERE clause?Or am I barking up the wrong tree entirely..
I've managed to BCP in a single table form a backup DAT file into a database, but it took WAY to long (1 hour+ on a meaty server) and I can't understand why.
The table only had a few rows of data and only had a few small dependancy tables.
The table has a primary key, hence an index so the BCP becomes a logged operation but it still should not take this long.
Here is the BCP command line that I ran :-
bcp <dbname>.dbo.<tablename> in <DAT filename> /U sa /P /S <server> /m 1 /n
Could anyone please shed some light on this. Is there anyway of 'fast' bcp'ing this table into the database overwriting the existing one.
Failing that, is there any way of scripting the transfer of a table from one server to another.
Does anyone know of a way to restore a single table using SQL 7.0? I know that I can build a dummy database and do a database restore, then copy the table from database to database. But....was wondering if there is a way to restore a single table from a backup. Is losing the ability to restore a single table one of the 'features' of 7.0?
Does anyone know if I can restore an individual table in SQL 7.0? I know I can DTS from a copy of the database but how can I restore a table directly from a backup file.
How can I restore just one table from the full backup? It was very easy with 6.5 but I am not sure whether it's possible with 7.0 and if it is possible, how to do it.
I thought I had posted this question already, but didn't see it in the list. I apologize if this is a repost.
I am running SQL Server 6.5 SP 4.
I am attempting to load a single table from backup, but continually get the error about schemas not matching. Interestingly, it comes back with a status 4, and not the status 3 indicating a mismatch on Ansi_Padding. The statement I am using is load table demhist from internal_tape with file=5,nounload
I have tried creating the table from scratch and using select * into... I have tried both above with both settings of Ansi Padding. The table I am trying to load contaings char columns which allow nulls. I have experimented with loading 2 other tables. One of the other tables loads and one doesn't. The one which does not load also has char columns which allow nulls, while the one that does load does not have char columns which allow nulls.
Is it a known problem or limitation on the table load that it cannot reload tables that contain char columns which allow nulls?
This morning, I needed to restore 1 table to a database because it had accidentally been deleted (don't ask). Each time I tried to restore the single table, I would select TOOLS| DATABASE BACKUP/RESTORE| RESTORE tab from Enterprise Manager, then I select SINGLE TABLE, but am only given the existing table names as choices to restore. This happens when I select to restore 'FROM DEVICE' as well.
Am I doing something wrong or is this how MS SQL6.5 is supposed to work? Am I only able to restore a corrupt table and not a missing table? I ended up restoring the entire database...
It appears that in SQL 2000 restoring a single table is a bit more tedious and less user friendly as in earlier versions (6.5). Can anyone explain in a nutshell the easiest/quickest way to restore a single table from a backup?
I have a table with no keys (temp table) which looks like this : col1|col2|col3 001|A|.087 001|B|.032 001|C|.345 002|A|.324 002|B|.724 003|A|.088 003|C|.899 001|A|.087 001|A|.234 001|B|.032
As you see, there is some duplicate entries in it. I would like to get a list of all the rows that have the same col1 and col2 BUT different col3 value. The result should return col1=001 col2=A but NOT col1=001 col2=B. I tried a lot of queries with EXISTS, HAVING, etc... but nothing seems to work.
I need to display the datas in a table format. I have placed a table and now i need to use two different datasets for a single table. Those two different datasets are generated based on two different stored procedures. Those stored procedures retrieve data from two different sql tables. Can any one explain me how to use two different datasets for a single table. As far i have tried i was able to fetch only the first record of the other dataset. But i need to fetch all the records of both the dataset. Thanks in advance for any help.
I was writing a query to get the age and the retirement year for all the employees.And thought of using while loop so that I don't have to write IF conditions or case statements for all the ages.
I'm using the AdventureWorks2012 database.And the actual table looks like this.
SELECT * FROM HumanResources.Employee
*NOTE:- These tables are not the complete tables.
BusinessEntityID         JobTitle                 BirthDate       MaritalStatus     Gender       1                Chief Executive Officer           1963-03-02  S              M       2         Vice President of Engineering         1965-09-01        S                     F      3             Engineering Manager          1968-12-13        M              M      4             Senior Tool Designer              1969-01-23           S             M
[Code] ...
And after I wrote the query to get the age and the retirement year of all the employees I got 70 tables for all the ages from 30 to 70. As the starting age is 30 and the last age is 70 in the table.So,I just want to know how I can settle all the tables into a single table as a sinle result and not as multiple results.
The query for age and retirement year....
DECLARE @Counter INT DECLARE @Duration INT DECLARE @Result DATE SET @Counter=(SELECT MIN(DATEDIFF(YY,BirthDate,GETDATE()))FROM HumanResources.Employee) SET @Duration=30
[Code] .....
And the result tables.
BusinessEntityID   JobTitle   BirthDate   AGE   MaritalStatus   Gender   Retirement Year69   Production Technician - WC60   1985-05-07  30  S   M   2045-08-25 22:36:38.160115  Production Technician - WC50   1985-07-01  30   S   F   2045-08-25 22:36:38.160133  Production Technician - WC40   1985-02-04   30   S   M   2045-08-25 22:36:38.160144    [Code] ....
And it goes like this for 70 times. So just want to know how I can merge those 70 tables into a single table.
I have a problem. For some reason I needed to restore a single (large) table that shares a filegroup with other tables. I have a full backup of the database. How can I restore my particular table?
Hello everyone, I've got a bit of an SQL mystery that I'm not sure how to solve. For some reason I just cant get my head around it. Here's the scenario: Table A: _____________ BidID - Int identity AuctionID - int BiderName - varchar(50) bidAmount - money ______________________ Now obviously each Bid will have a Unique ID using BidID but the other rows will contain multiple bids per user, on many different items possibly. BidID AuctionID BiderName BidAmount 1 4005 joeblow 100.00 2 4005 janedoe 101.00 3 4005 joeblow 107.00 4 4006 joeblow 100.00 5 4006 janedoe 105.00 6 4006 joeblow 106.00
I need to find out which Auctions JoeBlow is bidding on, but I dont need a table with Rows for every single one of his bids, just a distinct auctionID for his top bid so in this case the only thing returned would be 3 4005 joeblow 107.00 6 4006 joeblow 106.00 Any clues? I've been through sub querys, and stored procedures, and I cant get anything to work quite right. Thanks in advance for your help.
What’s the easiest way to check if a single value exists in a table column? I’m building a simple login page, and I want to get the username and check if it exists in my Users table. Here’s my SQL: SELECT UserID FROM UsersWHERE UserID = "admin" Could someone give me code to check for “admin” in my UserID column? Here’s some code I tried, using my SqlDataSource, but it returns an error “Could not load type 'System.Data.OleDb'” protected void Button1_Click(object sender, EventArgs e) { // Retreive the results from the SqlDataSource as a DataReader OleDbDataReader reader = (OleDbDataReader) SqlDataSource1.Select(DataSourceSelectArguments.Empty); // Read in the value if (reader.Read()) { } // Close the reader reader.Close(); } I don’t have to use the SqlDataSource, but originally thought it might be easier. I know how to use SqlDataSource to fill a whole GridView but this is different.
I would like to get single values from a huge sql server and put it into a table. let's say 4 by 4. How do I do that? I have a connection string with a select statement that will only return a value. But, I do not know how to put that value into a table. Thank you.
numbers 2 4 2Above is an example of my table with a single column. My problem is how to add all the numbers in that column to make it 8? The rows are also dynamic. Your help is highly appreciated.
