Mass Update In SQL

Apr 25, 2008

I have a Hits table that tracks the hits on the id of a Link table:

Hits:

int linkId (foreign Key to Link)

datetime dateCreated

varchar(50) ip

We recently had to merge Links from different systems that are implemented similarly.  As a result, all the linkIds are now wrong in the Hits table because the ids all changed.  I managed to track down all the old ids and their associated new ids and have it in a table that I call joined_links

joined_links
int oldId

int newId

 

So, how do I do a mass update of these linkIds in the Hits table in SQL?  I know I could do it in .NET, but I'd rather not write an app to do that runs thousands of update statements.  There's gotta be a way to do it something like this:

 

UPDATE Hits h SET h.linkId = (SELECT newId FROM joined_links WHERE oldId=h.linkId)

but obviously I don't have visibility of that linkId in the subselect...  A Loop maybe?

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Mass Update

May 8, 2008

This is a run of the mill application that moves orders from one table to another. There are 2 tables, Ordersummary & HstOrders.
Ordersummary has the following columns...
Identifier
FollowupId
OrderNumber
OrderReference
OrderReferenceOrigin
......
......
HstOrders has the following columns...
Identifier
OrderNumber
OrderReference
OrderType
......
......
The above two tables are bound by Identifier. After each month end, Orders are moved from Ordersummary to HstOrders.

Now my task is to update all rows in OrderSummary with the order details as seen in HSTOrders for ordertype = 'CREDIT'. OrderReferenceOrigin(in Ordersummary) should be updated with the value of Orderreference(from hstorders).

I have to update each row at a time & I need to write a cursor for mass updates where ordersummary.identifier = hstorders.identifier.

Can someone please help with in writing this update statement as I never wrote a cursor.

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Apr 17, 2006

SQL Server 2000 on Win2k

I'm fairly new to SQL Server and I'm just wondering if it's possible to Update Statistice for all indexes somehow? I'm looking at the Update Statistics command and it doesn't seem to be possible.

The situation we have is a reporting DB that basically has all it's tables truncated and remade every night by some DTS jobs that import from another datasource and change the data and build some denormalzed tables etc.
Some of the large Insert operations go from taking 8 mins to taking several hours sometimes and updating the stats seems to fix the problem for a while. So I'd like to make sure the optimizer has all the latest stats for all tables.

Any other advice would be appreciated.

Cheers.

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Why Triggers Don't Fire On Mass Update

Mar 4, 2005

If I have a trigger on a field in a table, and I update one record trigger fire properly. If I do a update to that same field on all records in the table the trigger does not fire. I the error in the trigger, or do I need to change my update statement?

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Mass Update On Table With Trigger

Jun 29, 2007

Hi,I need to update a field in about 20 records on a table. The table hasan update trigger (which updates the [lastedited] field whenever arecord is updated). As a result I'm getting an error: "Subqueryreturned more than 1 value.", and the update fails.Is there a way in the stored procedure to handle this issue?thanks for your help.Paul

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Nov 15, 2006

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Aug 13, 2004

I have a series of DTS packages.
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Is there a way to change the servername without editing each query in each DTS package.
I'd like to copy the template DTS package, then perform the modification.

Thanks

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Oct 1, 2001

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Chinmay

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Aug 8, 2006

Hi,

I have an user table with a single integer column. No indexes, no identities, nothing. I have to insert 600,000 rows via a client app. In tests, using BCP/Bulk Insert/DTS all runs OK (sub 3 seconds). However the app takes 5000 rows a second [considerably slower]. I can mimic this slow perfomance, within DTS, by removing the 'Fast Load' & 'Batch' options.

Question= why would the SQL insert run slower on one server and as fast as BCP/Bulk Insert/DTS on another? What can I check on the 'slow' running server? May there be a file version anomally ??

Version = SQL-2000 SP4

Any help much appreciated !!!

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Oct 11, 2007

Does anyone know what the best way to do mass updates in SQL server is? I am currently using the methodology suggested in this article

http://www.tek-tips.com/faqs.cfm?fid=3141

But the article is assuming that once I update a field it is going to have a value that is NOT NULL. So I can loop through and update the rows that have a NOT NULL value. But my updated rows do contain NULL values, in this case what is the best way to go about this???

***************************************
Here is my code. I want to avoid using Upd_flag becos
after the following code runs I need to reset that flag
before I run my next query
***************************************

--Set rowcount to 50000 to limit number of inserts per batch
Set rowcount 50000

--Declare variable for row count
Declare @rc int
Set @rc=50000

While @rc=50000
Begin

Begin Transaction

--Use tablockx and holdlock to obtain and hold
--an immediate exclusive table lock. This usually
--speeds the insert because only one lock is needed.


update t_PGBA_DTL With (tablockx, holdlock)
SET t_PGBA_DTL.procedur = A.[Proc code],
t_PGBA_DTL.Upd_flag = 1
FROM t_PGBA_DTL
INNER JOIN CPT_HCPCS_I9_PROC_CODES A
ON t_PGBA_DTL.PROC_CD
= A.[Proc code]
WHERE t_PGBA_DTL.Upd_flag = 0


--Get number of rows updated
--Process will continue until less than 50000
Select @rc=@@rowcount

--Commit the transaction
Commit
End

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Nov 15, 2007



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If i could find the table with the TO: part of the subscription held in it i could just run an update on that field and it would be solved...however, i cannot find that field...


So,
Without going into every subscription in report manager, how can i change the email addresses? Any Suggestions?

Thanks in advance

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May 16, 2008

Hi There

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Data sources are kept in the package xml , so if i copy all the packages to QA , and then change the Global Data Source connection, i still have to open each package maually and save it again.

Surely there must be an easy way to move all 50 packages and have the connection now point to QA. But config files and global data sources dont do the trick, what am i missing here ?

Thanx

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Feb 25, 2004

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Hi,

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Any help would be appreciated,

Seoras

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So far tried Import Method from SQL Management Studio, BULK INSERT and SQL Script. What is the easiest way?

If I try this

select *
into Coupon FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;Database=D:coupon.xls;HDR=YES',
'SELECT * FROM [coupon$]')

I get

OLE DB provider 'Microsoft.Jet.OLEDB.4.0' cannot be used for distributed queries because the provider is configured to run in single-threaded apartment mode.

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Hi,

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Thanks very much for any tips!

mike123

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Hi,

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Just wondering if I have the right approach here or if anyone else has any suggestions.

Thanks for your help!

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Oct 5, 2007



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Jan 2, 2008

What's up with this?

This takes like 0 secs to complete:

update xxx_TableName_xxx
set d_50 = 'DE',modify_timestamp = getdate(),modified_by = 1159

where enc_id in

('C24E6640-D2CC-45C6-8C74-74F6466FA262',

'762E6B26-AE4A-4FDB-A6FB-77B4782566C3',

'D7FBD152-F7AE-449C-A875-C85B5F6BB462')

but From linked server this takes 8 minutes????!!!??!:

update [xxx_servername_xxxx].xxx_DatabaseName_xxx.dbo.xxx_TableName_xxx
set d_50 = 'DE',modify_timestamp = getdate(),modified_by = 1159

where enc_id in

('C24E6640-D2CC-45C6-8C74-74F6466FA262',

'762E6B26-AE4A-4FDB-A6FB-77B4782566C3',

'D7FBD152-F7AE-449C-A875-C85B5F6BB462')


What settings or whatever would cause this to take so much longer from the linked server?

Edit:
Note) Other queries from the linked server do not have this behavior. From the stored procedure where we have examined how long each query/update takes... this particular query is the culprit for the time eating. I thought it was to do specefically with this table. However as stated when a query window is opened directly onto that server the update takes no time at all.

2nd Edit:
Could it be to do with this linked server setting?
Collation Compatible
right now it is set to false? I also asked this question in a message below, but figured I should put it up here.

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I am hoping someone can shed light on this odd behavior I am seeing running a simple UPDATE statement on a table in SQL Server 2000.  I have 2 tables - call them Table1 and Table2 for now (among many) that need to have certain columns updated as part of a single transaction process.   Each of the tables has many columns. I have purposely limited the target column for updating to only ONE of the columns in trying to isolate the issue.  In one case the UPDATE runs fine against Table1... at runtime in code and as a manual query when run in QueryAnalyzer or in the Query window of SSManagementStudio - either way it works fine. 
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(0 row(s) affected)
(1 row(s) affected)
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(1 row(s) affected)
If anyone has any ideas where to look next, I'd appreciate it.
Thanks 
 

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Feb 16, 2006

Hi SQL fans,I realized that I often encounter the same situation in a relationdatabase context, where I really don't know what to do. Here is anexample, where I have 2 tables as follow:__________________________________________ | PortfolioTitle|| Portfolio |+----------------------------------------++-----------------------------+ | tfolio_id (int)|| folio_id (int) |<<-PK----FK--| tfolio_idfolio (int)|| folio_name (varchar) | | tfolio_idtitle (int)|--FK----PK->>[ Titles]+-----------------------------+ | tfolio_weight(decimal(6,5)) |+-----------------------------------------+Note that I also have a "Titles" tables (hence the tfolio_idtitlelink).My problem is : When I update a portfolio, I must update all theassociated titles in it. That means that titles can be either removedfrom the portfolio (a folio does not support the title anymore), addedto it (a new title is supported by the folio) or simply updated (atitle stays in the portfolio, but has its weight changed)For example, if the portfolio #2 would contain :[ PortfolioTitle ]id | idFolio | idTitre | poids1 2 1 102 2 2 203 2 3 30and I must update the PortfolioTitle based on these values :idFolio | idTitre | poids2 2 202 3 352 4 40then I should1 ) remove the title #1 from the folio by deleting its entry in thePortfolioTitle table2 ) update the title #2 (weight from 30 to 35)3 ) add the title #4 to the folioFor now, the only way I've found to do this is delete all the entriesof the related folio (e.g.: DELETE TitrePortefeuille WHERE idFolio =2), and then insert new values for each entry based on the new givenvalues.Is there a way to better manage this by detecting which value has to beinserted/updated/deleted?And this applies to many situation :(If you need other examples, I can give you.thanks a lot!ibiza

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Oct 20, 2006

The Folowing code is not working anymore. (500 error)

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strSQL1 = "SELECT * FROM BannerRotor where BannerID=" & cstr(BannerID)
objRS.Open strSQL1, objConn , 2 , 3 , adCmdText
If not (objRS.BOF and objRS.EOF) Then
objRS.Fields("Exposures").Value =objRS.Fields("Exposures").Value + 1
objRS.update
End If
objRS.Close

The .execute Method works fine

strSQL1 = "UPDATE BannerRotor SET Exposures=Exposures+1 WHERE BannerID=" & cstr(BannerID)
objConn.Execute strSQL1

W2003 + IIS6.0

Pls advice?

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Apr 16, 2015

If I have a table with 1 or more Nullable fields and I want to make sure that when an INSERT or UPDATE occurs and one or more of these fields are left to NULL either explicitly or implicitly is there I can set these to non-null values without interfering with the INSERT or UPDATE in as far as the other fields in the table?

EXAMPLE:

CREATE TABLE dbo.MYTABLE(
ID NUMERIC(18,0) IDENTITY(1,1) NOT NULL,
FirstName VARCHAR(50) NULL,
LastName VARCHAR(50) NULL,

[Code] ....

If an INSERT looks like any of the following what can I do to change the NULL being assigned to DateAdded to a real date, preferable the value of GetDate() at the time of the insert? I've heard of INSTEAD of Triggers but I'm not trying tto over rise the entire INSERT or update just the on (maybe 2) fields that are being left as null or explicitly set to null. The same would apply for any UPDATE where DateModified is not specified or explicitly set to NULL. I would want to change it so that DateModified is not null on any UPDATE.

INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
VALUES('John','Smith',NULL)

INSERT INTO dbo.MYTABLE( FirstName, LastName)
VALUES('John','Smith')

INSERT INTO dbo.MYTABLE( FirstName, LastName, DateAdded)
SELECT FirstName, LastName, NULL
FROM MYOTHERTABLE

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May 27, 2008

hi need help how to send an email from database mail on row update
from stored PROCEDURE multi update
but i need to send a personal email evry employee get an email on row update
like send one after one email


i use FUNCTION i get on this forum to use split from multi update

how to loop for evry update send an single eamil to evry employee ID send one email

i update like this


Code Snippet
:

DECLARE @id nvarchar(1000)
set @id= '16703, 16704, 16757, 16924, 17041, 17077, 17084, 17103, 17129, 17134, 17186, 17190, 17203, 17205, 17289, 17294, 17295, 17296, 17309, 17316, 17317, 17322, 17325, 17337, 17338, 17339, 17348, 17349, 17350, 17357, 17360, 17361, 17362, 17366, 17367, 17370, 17372, 17373, 17374, 17377, 17380, 17382, 17383, 17385, 17386, 17391, 17392, 17393, 17394, 17395, 17396, 17397, 17398, 17400, 17401, 17402, 17407, 17408, 17409, 17410, 17411, 17412, 17413, 17414, 17415, 17417, 17418, 17419, 17420, 17422, 17423, 17424, 17425, 17426, 17427, 17428, 17430, 17431, 17432, 17442, 17443, 17444, 17447, 17448, 17449, 17450, 17451'
UPDATE s SET fld5 = 2
FROM Snha s
JOIN dbo.udf_SplitList(@id, ',') split
ON split.value = s.na
WHERE fld5 = 3

now
how to send an EMAIL for evry ROW update but "personal email" to the employee



Code Snippet
DECLARE @xml NVARCHAR(MAX)DECLARE @body NVARCHAR(MAX)
SET @xml =CAST(( SELECT
FirstName AS 'td','',
LastName AS 'td','' ,
SET @body = @body + @xml +'</table></body></html>'
EXEC msdb.dbo.sp_send_dbmail
@recipients =''
@copy_recipients='www@iec.com',
@body = @body,
@body_format ='HTML',
@subject ='test',
@profile_name ='bob'
END
ELSE
print 'no email today'


TNX

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The C# code:
   SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["touristsConnectionString"].ConnectionString);
SqlCommand cmd = new SqlCommand("fort_SaveRedirectURL", conn);
cmd.CommandType = CommandType.StoredProcedure;
Label accomIdLabel = (Label)DetailsView1.FindControl("lblID");
int accomId = Convert.ToInt32(accomIdLabel.Text);
cmd.Parameters.Add("@accomId", SqlDbType.Int).Value = accomId;
cmd.Parameters.Add("@path", SqlDbType.VarChar, 250).Value = GeneratePath();
try
{
conn.Open();
cmd.ExecuteNonQuery();
}
catch(Exception ex)
{
throw ex;
}
finally
{
conn.Close();
}
 The Stored Procedure:
  ALTER PROCEDURE developers.fort_SaveRedirectURL
(
@accomId int,
@path varchar(250)
)
AS
DECLARE
@enabled bit,
@oldpath varchar(250)

/* Ensure that the accommodation has been enabled */
SELECT @enabled = enabled FROM Experimental_Accommodation
WHERE Experimental_Accommodation.id = @accomId

IF (@enabled = 1)
BEGIN
/* Now check if a path already exists */
SELECT @oldpath = oldpath FROM Experimental_Adpages_Redirect
WHERE Experimental_Adpages_Redirect.accom_id = @accomId

IF @oldpath IS NULL
BEGIN
/* If Path already exists then we should keep the existing URL */
/* Otherwise, we need to insert a new one */
INSERT INTO Experimental_Adpages_Redirect
(oldpath, accom_id)
VALUES (@path,@accomId)
END
END
RETURN 

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hi,friends

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---------
select *
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---------

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is it possible?
give any idea or solution.

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it is possible?
give any idea or solution.

it's urgent.

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