Record Lost With UPDATE Statements
Jul 20, 2005
Hi,
I am using MS SQL Server 7.0 SP2 in Windows 2000 server SP4.
I have one-to-many tables (TABLE_HEAD and TABLE_DETAILS)which I am
going to update by using a stored procedure with UPDATE statements.
But somehow ,ONCE IN A WHILE, when executing the stored procedure
with about 1000 rows updated, I lost 10-20 records from TABLE_HEAD
(seems like 10-20 records were deleted) , and all data rows in
TABLE_DETAILS were updated correctly (even details of lost rows of
TABLE_HEAD).
In update procedure, I update both part of primary key and other
columns with having WHERE condition.
Please help , I really don't know why this happens.
Thanks in advance
Nipon Wongtrakul
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Jul 20, 2005
Hi everybody,I am writing a scheduling system that has appointments table. For eachappointment I am adding a new record that has EventID and ClientID. Eachevent has capacity that needs to be checked before adding new appointments,if it is reached no new appointments could be added. This logic isimplemented as a stored procedure.Problem that I am trying to solve is concurrent scheduling -- when two ormore clients are trying to schedule an event, it is possible that they wouldcheck capacity all together before adding new records to appointments table,get permission and then create appointments, exceeding capacity.Simply wrapping capacity checking and adding new appointment into explicittransaction does not help. The best solution that I found so far is addingfollowing statement in the beginning of the transaction:SELECT 0 FROM Appointments WITH(TABLOCKX)It effectively locks the whole table till the end of the transaction thusinsuring that until the first client checked and updated table nobody elsecan access it. Are there any better solutions? Is there any explicitstatements in MS SQL to lock table?Any advice is really appreciated.Thanks,AnatolyHere is the code:BEGIN TRAN/* If uncommented following statement solves the problem *//* SELECT 0 FROM Appointments WITH(TABLOCKX) */IF dbo.GetAvailableSpotsNum(@EventID) <= 0BEGINROLLBACK TRANRETURNENDINSERT INTO Appointments(Client,Event)VALUES(@ClientID,@EventID)COMMIT TRANAnd function GetAvailableSpotsNum:FUNCTION dbo.GetAvailableSpotsNum(@EventID INT)RETURNS INTASBEGINDECLARE @RES INTSELECT @RES = Capacity - (SELECT COUNT(*) FROM Appointments WHERE Event =@EventID)FROM Events WHERE EventID = @EventIDRETURN @RESEND
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Jul 16, 2006
To clarify, I'm trying to create a hiearchial grid that will display projects and their sub projects.
The page the sproc is servicing is a search page where a user can display all projects by a customer or they can enter in a projectID and return info that way. Thus you'll see If else in what I have listed below. I highlighted in red the 2nd select statement I'm trying to get to run. One problem is I'm getting an error:
Msg 156, Level 15, State 1, Procedure sp_GetProjects, Line 33
Incorrect syntax near the keyword 'ELSE'.
Think this has something to do with me trying to run 2 select statements in an IF. Secondly, I'm not sure exactly what syntax I need to use to accomplish what I'm trying to do. Again, the first select statement is creating a table with all projects that match the passed custID, the second select statement I'm trying to generate a 2nd table that will take the projectID for each row returned to the first table and find all rows with the same projectID's in the BillGroup table.
I need these two tables returned to a dataset I'm populated with a sqldataadapter in .net so I can create a relationship between the two tables and then bind to a grid.
@custID nchar(25) = NULL,
@projectID bigint = NULL
IF @custID != 'null'
SELECT p.projectID, p.Description FROM Projects p
WHERE custID = @custID
SELECT * FROM Projects p
JOIN dbo.BillGroups bg ON p.projectID = bg.projectID
ELSE IF @projectID != -1
SELECT projectID, Description FROM Projects
WHERE projectID = @projectID
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
END
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Aug 16, 2006
I am trying to update a record in a table based off of criteria of another record in the table.
So suppose I have 2 records
ID owner type
1 5678 past due
2 5678 late
So, I want to update the type field to "collections" only if the previous record for the same record is "past due". Any ideas?
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Mar 26, 2008
Hi All,
I am trying to create package something like that..
1- New Customer table as OleDB source component
2- Lookup component - checks customer id with Dimension_Customer table
3- And if same customer exist : I have to update couple fields on Dimension_Customer table
4- if it does not exist then I have insert those records to Dimension_Customer table
I am able to move error output from lookup to Dimension_Customer table using oledb destination
but How can I update the existing ones?
I have tried to use oledb command but somehow it didnt work
my sql was like this : update Dimension_Customer set per_X='Y', per_Y= &Opt(it should come from lookup)
I will be appreciated if you can help me...
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Apr 26, 2004
How to update a column in the table using the data from another column in the same table? Thanks.
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Jan 3, 2005
hi!
I have a big problem. If anyone can help.
I want to retrieve the last update time of database. Whenever any update or delete or insert happend to my database i want to store and retrieve that time.
I know one way is that i have to make a table that will store the datetime field and system trigger / trigger that can update this field record whenever any update insert or deletion occur in database.
But i don't know exactly how to do the coding for this?
Is there any other way to do this?
can DBCC help to retrieve this info?
Please advise me how to do this.
Thanks in advance.
Vaibhav
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Jan 10, 2007
Hi guys! Is there a way to combine these update statements?
Dim update_phase As New SqlCommand("INSERT INTO TE_shounin_zangyou (syain_No,date_kyou,time_kyou) SELECT syain_No,date_kyou,time_kyou FROM TE_zangyou WHERE [syain_No] = @syain_No", cnn)
Dim update_phase2 As New SqlCommand(" UPDATE TE_shounin_zangyou SET " & " phase=2, phase_states2=06,syounin2_sysd=CONVERT(VARCHAR(10),GETDATE(),101) WHERE [syain_No] = @syain_No", cnn)
The same table is updated so I think it would be better to have just one update statement. But the problem is that, the first update statement retrieves values from another table, whereas the update values of the second statement is fixed. Is there a way to combine these two statements. I tried to do so but it does not update. Here's my code...
Dim update_phase As New SqlCommand("UPDATE TE_shounin_zangyou SET TE_shounin_zangyou.syain_No=TE_zangyou.syain_No, TE_shounin_zangyou.date_kyou=TE_zangyou.date_kyou, TE_shounin_zangyou.time_kyou=TE_zangyou.time_kyou FROM TE_zangyou WHERE TE_zangyou.syain_No = TE_shounin_zangyou.syain_No", cnn)
Please help me. Thanks.
Audrey
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Mar 13, 2008
hello gang, Is it possible to combine sql update statements? something like:
UPDATE table_nameSET column_name = new_valueWHERE column_name = some_valueANDSET column_name = new_valueWHERE column_name = some_other_value
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May 14, 2002
Hello,
I am creating my companys' database and I have a small problem that must be
solved.
I have a pictures table:
PicturesTable
-------------
ProductID int ForeignKey
Picture nvarchar(30)
...
(A product can have many pictures & the ProductID is unique for any product,
but not for the table of pictures).
What I want to do is to somehow do a procedure to:
1) Check if any images (for a productID) exists in the table
2) if they do not exist then add the appropriate images into the table
3) if the images exist, then update the images with the new one that I have.
What I thought was to just delete all the images from the table for the
specific product:
DELETE FROM PicturesTable
WHERE ProductID = '10-11'
and then add the appropriate images:
INSERT INTO PicturesTable (ProductID, Picture)
VALUES ('10-11', 'Dir1/Pic1.gif')
INSERT INTO PicturesTable (ProductID, Picture)
VALUES ('10-11', 'Dir1/Pic2.gif')
INSERT INTO PicturesTable (ProductID, Picture)
VALUES ('10-11', 'Dir1/Pic3.gif')
but I do not like a lot this idea because if a user tries to read the pictures
for that product (at the same time I was deleting them) s/he would get
nothing. Is any other way that I can do it please?
I would appreciate it if someone answers me.
Yours, sincerely
Efthymios Kalyviotis
ekalyviotis@comerclub.gr
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Mar 29, 2004
My manager is interested in knowing if there is a way to update our website's SQL database using a method with excel, similar to importing.
The person who was previously in my position had imported a few hundred new products into the database with an excel spreadsheet.
Now, we would like to make updates such as a price changes or similar adjustments to a number of the products in the database. We could use a web interface, but ours requires us to find each product individually and it takes too much time. I told him that it would probably be necessary to write an SQL statement to update the tables, but we're also interested in maintaining the integrity of the database and are worried about loosing data due to a typo. Is it possible to export the db contents to an excel file, make changes, and then merge those changes into the existing database? I have tried and failed, so I am wondering if any experienced users could help me out.
Also, is there some kind of phpmyadmin for MS SQL? A free, open source alternative would be best.
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Jun 5, 2007
Hi,
I have this update statement that works, it updates the totalamount to calc amount, but I want to update totalamount only when it is not equal to calcamt.I have tried many things but in vain.Can some one please help me.
How do i use case statements to update only when totalamount!=calcamt.
update c
set totalamount= calcamt
from Prepay c
JOIN
(select sum(amt) as calcamt, payid
from pay
group by payid
)b ON b.payid= c.payid
where c.cust_no='somenum'
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Sep 19, 2006
HI Gurus
I have written one CTE (common table expression) and trying to use same CTE with three seperate UPDATE statements which gives me error saying "Invalid Object name" (it works fine when I try to use with 1 update statement (any one from three update statements)
Isnt it possible that I can use 1 CTE with mutiple update statements?
waiting for your reply....
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Oct 31, 2007
What is the single SQL statement to truncate the blank space on either side of data.
Ex.
Table1 has Name as column.
I have records filled with blank space on both side for Name field.
With one query I want to correct (truncate the leading and trailing space) the data.
How?
SQL Server 2005 SP2.
Thank you,
Smith
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Jun 5, 2007
Hi,
I have this update statement that works, it updates the totalamount to calc amount, but I want to update totalamount only when it is not equal to calcamt.I have tried many things but in vain.Can some one please help me.
How do i use case statements to update only when totalamount!=calcamt.
update c
set totalamount= calcamt
from Prepay c
JOIN
( select sum(amt) as calcamt, payid
from pay
group by payid
)b ON b.payid= c.payid
where c.cust_no='somenum'
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Nov 2, 2004
I am almost sure I can update variables columns in one select/case type
statement, but having problems working out the syntax.
I have a table with transactions - with tran types as the key.
in this example, types = A,B,C ,D.
in this first example I am updating the sum of QTY to value t_A based on
tran types =A.
can I perform sub query/case to update with the same where clause
but for types B,C and D?? I also have to insert for specific lot numbers each sum values.
Create table #t_reconcile(
t_lot_number int not null,
t_A float,
t_B float,
t_C float,
t_D float)
insert #t_reconcile
select t.lot_number, sum(t.qty)
from i , t
where i._id = t.event_id
i.transaction_type = 'A'
group by t.lot_number
order by t.lot_number
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Mar 18, 2008
I'm working on a query which involves changing the case of a field from mixed case to all lower case. The field exists in multiple tables, so to do this I have multiple update statements. Is there a way to make this more efficient?
See below for example:
update InvestBroker
set BrokerID = lower(BrokerID)
update InvestFill
set BrokerID = lower(BrokerID)
update InvestBrokerAccount
set BrokerID = lower(BrokerID)
update InvestFIXBroker
set BrokerID = lower(BrokerID)
update InvestUploadBrokerFilter
set BrokerID = lower(BrokerID)
update InvestSettleInstructions
set BrokerID = lower(BrokerID)
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Jun 22, 2015
I get the error:
(0 row(s) affected)
Msg 208, Level 16, State 1, Line 41
Invalid object name 'X_SET_PREOP'.
FOR THE FOLLOWING CODE SEGMENT.. I am trying to do 2 updates with just one WITH BLOCk.Create table #temp( MPOG_CASE_ID uniqueidentifier, lab_name varchar(100), lab_date datetime, lab_value decimal(19,2) );
with X_SET_PREOP as
(
SELECT
xx= ROW_NUMBER() OVER ( PARTITION BY lab.MPOG_Case_ID, lab.lab_name ORDER BY lab.lab_date DESC ),
lab.MPOG_Case_ID,
lab.lab_name,
lab.lab_value,lab.lab_date
FROM
MPOG_Research..ACRC_427_lab_data lab
[code]....
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Jul 20, 2005
HiI'm using the SQL 2000 table variable to hold 2 different fact sets.I'm declaring the variable @CurrentTable and inserting into it using aSELECT statement with no problems.I'm leaving certain of the columns null in order to later update themwith the PK.Problem is in the UPDATE syntax I'm usingUPDATE @CurrentTableSET ManagerTitle = (select mgrs.pos_title from mgrs) wheremgrs.pos_num = @CurrentTable.MgrPosNumIt is insisting I declare the @CurrentTable variable when I try to useit in the where clause.Is it simply out-of-scope or am I really doing something foolish?Andrew
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Apr 8, 2008
Our existing DW's ETL was written in a very complex fashion by the previous team. They use DTS package lookups to read a row in the Source SQL Server database see if that row exists in the taget SQL Server database. If the row does not exist, they use ActiveX scripts to INSERT the row in the target SQL Server database. If it exists, they update the row on the target side. How would you do this in SSIS? Apologize if this sounds like a basic question, however, I would have done this via Stored Procedures or SQL Scripts especially since it involves SQL Servers alone. Appreciate any help.
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Jan 31, 2008
I have a SP that has the correct syntax. However when I run my web-app it gives me this error: "Only one expression can be specified in the select list when the subquery is not introduced with EXISTS. "
The procedure takes in three parameters and retrieves 23 values from the DB to display on my form.
Any ideas?
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Mar 28, 2006
I have been posting to the Data Presentation Controls forum for about a month regarding a problem I've been dealing with.
http://forums.asp.net/thread/1223055.aspx
What it boils down to is that on a button click event, I was updating
some records, then re-executing a SELECT statement to get the records
back out and rebind my DataGrids. This was happening too quickly
and the data was not being updated in time before the SELECT was
executed. So my grids would still display "old" data.
How do I get SQL Server to commit the UPDATE before my C# code continues?
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Feb 23, 2007
Hi all,
Does an UPDATE statment lock the entire table or just the rows that will be affected by the UPDATE?
I ask because -
Can I run UPDATE statements in parallel on the same table on the same column. The need for doing this is because the table is a large fact table. I plan to execute the same UPDATE statements on different time sections of the data to expedite the processing.
If the UPDATE statment lock the entire table then I cannot run an UPDATE in parallel. If the UPDATE statement just locks the rows that will be affected then maybe I can because rows affected will be different for each UPDATE.
Let me know.
Thanks,
Vivek
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Mar 11, 2004
When working from within VB, should i be using Insert or Update statements, or should i pass the values to a stored proc that does it for me.
thanks
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Aug 29, 2007
I searched a bit but didn€™t get too far in actually solving a case of deadlock in a simple query I have running here. The queries in question are executed under 2 separate transactions (Serializable IsolationLevel) and are shown below. I guess I don€™t understand how those 2 can deadlock because they are operating on different rows of the table and Serializable should keep them isolated pretty well too. Is it because I€™m using the column value inside an update stmt? How should this query be split if that€™s the case?
This is what the SQL Profiler has to say:
Lock: Deadlock Chain Deadlock Chain SPID = 59
Lock: Deadlock Chain Deadlock Chain SPID = 57
Lock: Deadlock my_user_name
57: UPDATE CreditCard SET Balance = Balance - 200 WHERE (Account = 0 AND CardHolder = 'Foo' AND Balance - 200 >= 0)
59: UPDATE CreditCard SET Balance = Balance - 250 WHERE (Account = 3 AND CardHolder = 'Bar' AND Balance - 250 >= 0)
I also used DBCC TRACEON(1204, 3605, -1) but I don€™t understand what the SQL log is telling me. Can anyone shed some light on why the above 2 statements sometimes cause the following:
System.Data.SqlClient.SqlException: Transaction (Process ID 57) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
I really don't want to retry the update if I don't have to. Table looks like:
Column DataType Length
Account int 4
CardHolder char 64
Balance float 8
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Nov 6, 2007
Hi , I am trying to update a main table from its staging table based on certain criteria
like if the checksum doesnot match for the same Business/primary key update that row in the main table .
problem what i am facing is if there are two rows in the staging table with different checksum values the main table's corresponding row gets updated with only the first row from the staging table and ignores the second row in staging , i want the update to be capturing each row. is there a way to do this task repitively in ssis.
iam using execute sql task in ssis
first step to delete all matching checksum records in staging
next update non matching checksum into main table.
i want to repeat these two steps based until condition that count of rows in staging is equal to zero .
is there a way to acheive this please let me know.
for example
staging main table
name age checksum name age checksum
xyz 26 456 xyz 24 876
xyz 28 234
my result should have in main table
xyz 28 234
but instead i am getting xyz 26 456
i want the update statement row by row not set based . please help me with this
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Apr 21, 2007
Hi, I just want you to know that I am very young in ASP.NET world so please bear with me.I have been looking for an answer to my problem, but unfortunately I couldn’t find one. So I created a user here on www.asp.net just for making this post.
Before I continue I just want to apologies if there is another post where this question is already answered.
Please watch this Print Screen I just took: � http://www.bewarmaronsi.com/Capture.JPG “
As you can see the “INSERT, UPDATE, and DELETE Statements� are disabled, and that’s exactly my problem. I tried with an MS access database and it works perfect, but when I use a MS SQL database this field gets disabled for some reason.
The MDF file is located in the App_data folder and is called ASPNETDB.
And when I try to add custom SQL statements, it gives me Syntax error near “=�. Something like that. I bought the Total Training Set1 package and it works perfect in their examples.
I just want to thank you for reading my post and I hope that you got some useful information for me.
By the way, I’, from Sweden so you have to excuse me if my English is rusty.
Thanks!
PS: Can it be that I’m running windows Vista?
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Mar 26, 2008
I have problem in using the SQLDataSource. When in VS 2005 I drag and drop the SQLDataSource onto my page and then add a GridView control.I bind the GridView control to the SQLDataSource control. But the problem is it does not generate the INSERT, UPDATE, and DELETE statements. The dialog box is inactive. The screenshots may help. please help me in this regard. I also tried it for Accesscontrol but the same problem. Sorry for my poor English!. thanks in advance
the screenshot links:
http://img139.imagevenue.com/img.php?image=28285_2_122_937lo.JPGhttp://img205.imagevenue.com/img.php?image=27550_1_122_203lo.JPG
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Oct 25, 2004
Auditors want us to track when Insert, Update and Delete failures occur. Is this possible in SQL 2000?
They also want us to track schema changes. Is this possible?
Thanks, Dave
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May 4, 2015
I have a main table called Stock for example.
One process ( a service ) inserts data into this table , as well as updates certain fields of the table periodically.
Another process ( SQL Job ) updates the table with certain defaults and rules that are unknown to the service - to deal with some calculations and removal of null values where we can estimate the values etc.
These 2 processes have started to deadlock each other horribly.
The SQL Job calls one stored procedure that has around 10 statements in it. This stored proc runs every minute. Most of them are of the form below - the idea being that once this has corrected the data - the update will not affect these rows again. I guess there are read locks on the selecting part of this query - but usually it updates 0 rows - so I am wondering if there are still locks taken ?
UPDATE s
SET equivQty = Qty * ISNULL(p.Factor,4.5) / 4.5
FROM Stock s
LEFT OUTER JOIN Pack p
on s.Product = p.ProductId
AND s.Pack = p.PackId
WHERE ISNULL(equivQty,0) <> Qty * ISNULL(p.Factor,4.5) / 4.5
The deadlocks are always between these statements from the stored procedure - and the service updating rows. I can't really see how the deadlocks occur but they do.
Another suggestion has been to try and use an exists before the update as below
IF EXISTS( SELECT based on above criteria )
( UPDATE as before )
Does this reduce the locking at all ? I don't know how to test the theory - i added this code to some of the statements, and it didn't seem to make much difference ?
Is there a way to make a process ( in my case the stored procedure ) - give up if it can't aquire the locks rather than being deadlocked - which leads to job failures and emails etc ?
We are currently trying to filter down the data that is updated to be only the last few months - to reduce the amount of rows even analyzed - as the deadlocking does seem to be impacted by the number of rows in the tables.
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Jul 20, 2006
Hi,I'm new to ASP.NET and having a problem configuring the SqlDataSource control. I am using the standard ASP.NET 2.0 "aspnetdb" database to manage user accounts. The problem is this:When using the wizard to configure my SqlDataSource control, the option to auto-generate the Insert/Update/Delete SQL statements are grayed out. I've searched this forum and found that this can be a symptom of no primary keys in the tables. However, there are primary keys (UserId), which is the default schema as generated by asp.net (aspnet_regsql.exe). When I use the wizard, I make the following choices:How would you like to retrieve data from your database?-> Select "Specify columns from a table or view"-> Select the "vw_aspnet_MembershipUsers" view from the "Name:" drop-down list-> Select "UserId", "Email", "UserName" from "Columns:"After this, still no option to auto-generate I/U/D statements. Any thoughts on why this isn't working??? Thanks,Leah.
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Sep 11, 2015
What are the options for a user to trigger an ssis package or job, it needs to be user friendly or in excel can I have a custom component to do update statements or trigger job?
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Apr 23, 2008
I have an SQL data source on my page and I select "Table". On the next screen I pick the fields I want to show. Then I click the "Advanced" button because I want to allow Inserts, updates and deletes. But its all greyed out abd I can't check this option. The UID in the connection string I am connecting under has the correct permissions in SQL server to do inserts, update and deletes too. Anyone know why it would be greyed out? The connectionstring property in the aspx code is dynamic but this shouldn't be the reason because I have used this before with success
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