Slow Update
Jan 18, 1999
UPDATE TABLE SET FIELD1=NULL WHERE FIELD2=something - is running veryvery slow. Table has 200 000 recors and on FIELD2 is index.
If number of records to be updated is about 40 000, it takes about 3-4 hours.
I tried this:
- create a new MSSQL DB.
- migration of TABLE from original databes to new test DB
- So, in new DB was only one table, with 200 000 records. Index was only on FIELD2.
- I ran that update and it takes about 3-4 hours
I tried that on Interbase and update takes under ONE SECOND!!!!!!!
Thanks for some notices
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Mar 22, 1999
I have the following stored procedure that I use for an update. The table now has just over two million rows and the stored procedure takes days to run. I am looking for any help that would produce the same results faster. This runs on SQL Server 6.5, on an NT machine with 4 pentium pro 200 processors and 512 MB of RAM so I am relatively sure that the performance issue is in the below statement.
UPDATE PAY_CHECK_DETAILS
SET JobID = j.JobID
,HROrganizationID = j.HROrganizationID
,JobDetailID = j.JobDetailID
,GLAccountNumber = j.GLAccountNumber
FROM JOBS j, PAY_CHECK_DETAILS p
WHERE j.EmployeeID = p.EmployeeID
AND j.HRActionEffectiveDate =
(SELECT max(HRActionEffectiveDate)
FROM JOBS jj
WHERE p.EmployeeID = jj.EmployeeID
AND jj.HRActionEffectiveDate <= p.PayDate)
AND j.HRActionSequence =
(SELECT max(HRActionSequence)
FROM JOBS jjj
WHERE p.EmployeeID = jjj.EmployeeID
AND jjj.HRActionEffectiveDate =
(SELECT max(HRActionEffectiveDate)
FROM JOBS jjjj
WHERE p.EmployeeID = jjjj.EmployeeID
AND jjjj.HRActionEffectiveDate <= p.PayDate))
AND NOT (ISNULL(p.JobID,1) = ISNULL(j.JobID,1)
AND ISNULL(p.HROrganizationID,'A') = ISNULL(j.HROrganizationID,'A')
AND ISNULL(p.JobDetailID,1) = ISNULL(j.JobDetailID,1)
AND ISNULL(p.GLAccountNumber,'A') = ISNULL(j.GLAccountNumber,'A'))
Thanks for any help or suggestions you have.
Keith
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Nov 23, 2007
I have designed a 22 table database in sql server that is to act as a backup/alternate access to the data we have stored in an ADABAS database. I've also written a vb.net console program that will take data from ADABAS through a broker connection (one row at a time), checks the sql server database to see if that information is already stored, and then either performs an insert or an update.
I can write the rows from ADABAS to a text file (not using the broker), at the rate of about 1.3 million rows in 1.3 hours. Data can be imported (I'm not sure how this import is done, possibly via a CSV file. SELECTS/UPDATES are not done, just INSERTS) at about 1 million or so an hour. But when I do the update, receiving information via the broker from ADABAS to the VB program (with it's SELECT, then UPDATE/INSERT), I'm only doing about 20-25 thousand rows an hour.
I ran a trace using the SQL Server Analyzer on the database while running the update program, and then ran Profiler using the generated workload. It created a few indices, but I just restarted the update program (I'm still developing, so I delete all rows from all tables each time I rerun the update), but I haven't seen that it's really any faster.
I have a rather large set of data to transfer over, and this 20-25 thousand row time is not nearly fast enough.
Any help will be appreciated.
Thanks,
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Jul 20, 2005
I have the following statement that takes quite a long time. Longestof any of my SQL statment updates.UPDATE F_REGISTRATION_STD_SESSIONSET PREVIOUS_YEAR_SESSION_ID = (SELECT s.previous_year_session_idFROM F_REGISTRATION_STD_SESSION R,DS_V4_TARGET.dbo.D_H_Session_By_SessQtr SWHEREr.STUDENT_ID = F_REGISTRATION_STD_SESSION.STUDENT_IDand s.previous_year_SESSION_ID = r.SESSION_IDand s.session_id = F_REGISTRATION_STD_SESSION.SESSION_ID)STUDENT_ID varchar(20) and SESSION_ID char(10) and are indexedWhat I want to accomplish:I want to know if there was a student registration from the prior yearof a registration.Example, if there is a registration for Fall 2004, was there also aregistration for the same student Fall 2003?Maybe there is a better way to approach this?TIARob
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Sep 9, 2007
Hi,
I have a table with 110 nvarchar (255) columns in the database. I receive the data from the server (array) and them loop through it to insert the data into the database. The problem is it takes more than 3 minutes to insert (or update) (in memory) the 310 records it got from the array. I am reusing the Statement (with parameters). How could I improve the performance?
It's really a small quantity of data, the CPU in the device is 520Mhz... it should be alright!
Can aynone help me please?
Thanks
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Apr 17, 2008
Hi all,
I'm having what you might call an optimisation issue - but I'm also not sure if my approach to this problem is right. I've spent the whole day trying various methods but none seem to be performing as admirably as I'd hoped.
Basically, here's the scenario:
1. Log files are being inserted into a SQL table via Log Parser 2.2.
2. I have a lookup table of ip address ranges to countries and other geographic data.
3. Once the log row has been inserted from Log Parser, I want to update the same log table with data from the lookup table.
The main problem seems to be the updating (the initial insert from Log Parser is lightning quick).
I initially wrote a trigger on AFTER INSERT on the log table that converted the actual user's IP address into IPNumber format using a simple algorithm, then pumped the IPNumber into a quick select query which retrieved the geolocation data. Then, in the same trigger, there was an update statement which basically said:
update dbo.Logs
set [Country] = @Country
where [IpNumber] = @IpNumber and [Country] = Null
Therein lies the problem. The update statement slows everything down to almost a standstill and also seems to obtain a lock on the table.
Critical factors:
1. The log table must remain readable.
2. The query must execute in seconds -- not over half hour :)
I've experimented with various combinations of indexing, so far to no avail.
Any suggestions would be very much appreciated.
Regards
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Jul 20, 2005
I have two tables:T1 : Key as bigint, Data as char(20) - size: 61M recordsT2 : Key as bigint, Data as char(20) - size: 5M recordsT2 is the smaller, with 5 million records.They both have clustered indexes on Key.I want to do:update T1 set Data = T2.Datafrom T2where T2.Key = T1.KeyThe goal is to match Key values, and only update the data field of T1if they match. SQL server seems to optimize this query fairly well,doing an inner merge join on the Key fields, however, it then does aHash match to get the data fields and this is taking FOREVER. Ittakes something like 40 mins to do the above query, where it seems tome, the data could be updated much more efficiently. I would expectto see just a merge and update, like I would see in the followingquery:update T1 set Data = [someconstantdata]from T2where T2.Key = T1.Key and T2.Data = [someconstantdata]The above works VERY quickly, and if I were to perform the above query5 mil times(assuming that my data is completely unique in T2 and Iwould need to) it would finish very quickly, much sooner than theprevious query. Why won't SQL server just match these up while it ismerging the data and update in one step? Can I make it do this? If Iextracted the data in sorted order into a flat file, I could write aprogram in ten minutes to merge the two tables, and update in onestep, and it would fly through this, but I imagine that SQL server iscapable of doing it, and I am just missing it.Any advice would be GREATLY appreciated!
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May 11, 2007
I have a linked server set up on my local SQL 2000 instance. I try and run an update against an SQL 2005 database and it take 29 seconds. I checked the execution plan and it says it takes the entire time on the Remote Scan. Is there something I need to do to speed this up? There is an index on the PK that I am searching against.
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May 30, 2007
Hi
I have an update query that joins with 2 table variables. this update updates about 50,000 rows in a table.
update table1
from @table2 t2
inner join @table3 t3
on t2.id = t3.id
where table1.id = t2.id
the problem is that sometimes this update takes forever. If I replace the table variable with regular tables, it only takes about 11 seconds.
I am not sure what the problem is. Could this be a problem with the tempdb. What should I be looking for in the tempdb that might cause a problem.
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Jun 7, 2004
The following basic UPDATE SQL statement has been running for 16 hours and counting. I need to get this done ASAP.
UPDATE Recipients SET UndeliverableTime = getdate()
FROM Recipients
INNER JOIN Domains ON (Recipients.DomainID = Domains.ID)
INNER JOIN Undeliverables ON (
Recipients.UserName + '@' + Domains.Domain =
Undeliverables.EmailAddress)
Is there any way I can see how far this has gone and how long it will take to finish? Will this take another hour to finish or another week?
Both tables (Recipients and Undeliverables) have approximately 80 million records
I did a nearly identical operation with another table that had only 7 million records and it took 10.5 hours. I hope this doesn't scale linearly to 115 hours.
I am tempted to cancel, retune, and rerun but that may be trigger a really expensive rollback operation that could take days. Any ideas?
thanks!
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Dec 4, 2014
I have a database with enabling merge replication.
Then the problem is update query is taking more time.
But when I disable the merge triggers then it'll update quickly.
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Jul 20, 2005
am using FOR UPDATE triggers to audit a table that has 67 fields. Myproblem is that this slows down the system significantly. I havenarrowed down the problem to the size (Lines of code) that need to becompiled after the trigger has been fired. There is about 67 IFUpdate(fieldName) inside the trigger and a not very complex selectstatement inside the if followed by an insert to the audit table. WhenI leave only a few IF-s in the trigger and comment the rest of thecode performance increased dramatically. It seems like it is checkingevery single UPdate() statement. Assuming that this was slowing downdue to doing a select for every update i tried to do to seperateselects in the beginning from Deleted and Inserted and assigningcolumns name to specific variables and instead of doingif Update(fieldName) i didif @DelFieldName <> @InsFieldNamebeginINSERT INTO AUDITSELECT WHAT I NEEDENDThis did not improve performance. If you have any ideas on how to getaround this issue please let me know.Below is an example of what my triggers look like.------------------------------------Trigger 1 -- this was my original designCREATE trigger1 on TableFOR UPDATEASif update(field1)begininsert into AuditSELECT What I needENDif update(field2)begininsert into AuditSELECT What I needEND...... Repeated about 65 more timesif update(field67)insert into AuditSELECT What I needEND---------------------------------------------------------------------------Trigger 2 -- this is what i tried but did not improve performanceCREATE trigger2 on TableFOR UPDATEASDeclare @DelField1 varcharDeclare @DelField2 varchar....Declare @DelField67 varcharSelect@DelField1 = Field1,@DelField2 = Field2,....@DelField67 = Field67From DeletedDeclare @InsField1 varcharDeclare @InsField2 varchar....Declare @InsField67 varcharSelect@insField1 = Field1,@insField2 = Field2,....@InsField67 = Field67From Inserted-- I do not do if Update() but instead compare variablesif @DelField1 <> InsField1beginInsert into AUDITSELECT what I needendif @DelField2 <> InsField2beginInsert into AUDITSELECT what I needend............if @DelField67 <> InsField67beginInsert into AUDITSELECT what I needend----------------------------------------------IF you have any idea how to optimize this please let me know. Anyinput is greatly appreciated. I do not have a problem with triggersdoing what they are supposed to, they are very slow this is myconcern. The reason I gave you two examples is because i suspect ithas something to do with the enormouse amount of code inside thetrigger. both examples perform about the same whether i use the twohuge selects from the Inserted and Deleted or not.Thanks,Gent
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Nov 5, 2006
we just moved a database from a shared SQL 2000 server to SQLExpress on a VPS server. Every thing seems to work great, really no performance loss at all, except for one stored proc that is giving us problems. It's function is to update a history table, and then update the production table. On the old server, it would take less than a second to run this, now it takes anywhere from 45 seconds to 1 minute or it times out. This database is used on a classic asp web app. ANY help at all on this would be appreciated as I am pulling my hair out trying to figure out what's wrong here. here is the proc.
------------------------------------------ code ----------------------------------------------
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
SET NOCOUNT ON
go
ALTER PROCEDURE [dbo].[sp_UpdatePersonalization]
@p_id nvarchar(50),
@cust_num varchar(50),
--@publication varchar(25),
@full_name varchar(500),
@email varchar(200),
@web_address varchar(300),
@include_web bit,
@ReturnAddressYN varchar(1),
@include_email bit,
@job_title varchar(500),
@company_name varchar(500),
@tagline varchar(1000),
@phone1 varchar(30),
@phone2 varchar(30),
@phone3 varchar(30),
@phone4 varchar(30),
@phoneext1 varchar(10),
@phoneext2 varchar(10),
@phoneext3 varchar(10),
@phoneext4 varchar(10),
@phonedesc1 varchar(20),
@phonedesc2 varchar(20),
@phonedesc3 varchar(20),
@phonedesc4 varchar(20),
@company_mail_address varchar(500),
@masthead varchar(250),
@verbiage_page1 varchar(1400),
@verbiage_page4 varchar(2650),
@inc_bbb bit,
@inc_ehl bit,
@inc_eho bit,
@inc_rl bit,
@p_comments varchar(500),
@p_update_flag varchar(10)
--@frequency varchar(50),
--@mail varchar(50),
--@fold varchar(50),
--@contact varchar(50),
-- do not add this on the update! @date_added,
AS
declare @last_updated datetime
select @last_updated=GETDATE()
declare @set_update bit
--if @p_update_flag='False'
--select @set_update = 1
--else
--select @set_update = 0
if @p_update_flag='False'
INSERT INTO pers_main_arch
(
p_id,
cust_num,
publication,
full_name,
email,
web_address,
include_web,
include_email,
job_title,
company_name,
tagline,
phone1,
phone2,
phone3,
phone4,
phoneext1,
phoneext2,
phoneext3,
phoneext4,
phonedesc1,
phonedesc2,
phonedesc3,
phonedesc4,
company_mail_address,
masthead,
verbiage_page1,
verbiage_page4,
inc_bbb,
inc_ehl,
inc_eho,
inc_rl,
p_comments,
frequency,
mail,
fold,
contact,
date_added,
last_updated,
start_month,
ReturnAddressYN
)
SELECT
pm.p_id,
pm.cust_num,
pm.publication,
pm.full_name,
pm.email,
pm.web_address,
pm.include_web,
pm.include_email,
pm.job_title,
pm.company_name,
pm.tagline,
pm.phone1,
pm.phone2,
pm.phone3,
pm.phone4,
pm.phoneext1,
pm.phoneext2,
pm.phoneext3,
pm.phoneext4,
pm.phonedesc1,
pm.phonedesc2,
pm.phonedesc3,
pm.phonedesc4,
pm.company_mail_address,
pm.masthead,
pm.verbiage_page1,
pm.verbiage_page4,
pm.inc_bbb,
pm.inc_ehl,
pm.inc_eho,
pm.inc_rl,
pm.p_comments,
pm.frequency,
pm.mail,
pm.fold,
pm.contact,
pm.date_added,
pm.last_updated,
pm.start_month,
pm.ReturnAddressYN
FROM pers_main pm
WHERE pm.cust_num = @cust_num
if @p_update_flag='True' OR @p_update_flag='False' OR @p_update_flag IS NULL OR @p_update_flag=''
UPDATE pers_main SET
--cust_num=@cust_num,
--publication=@publication,
full_name=@full_name,
email=@email,
web_address=@web_address,
include_web=@include_web,
include_email=@include_email,
job_title=@job_title,
company_name=@company_name,
tagline=@tagline,
phone1=@phone1,
phone2=@phone2,
phone3=@phone3,
phone4=@phone4,
phoneext1=@phoneext1,
phoneext2=@phoneext2,
phoneext3=@phoneext3,
phoneext4=@phoneext4,
phonedesc1=@phonedesc1,
phonedesc2=@phonedesc2,
phonedesc3=@phonedesc3,
phonedesc4=@phonedesc4,
company_mail_address=@company_mail_address,
masthead=@masthead,
verbiage_page1=@verbiage_page1,
verbiage_page4=@verbiage_page4,
inc_bbb=@inc_bbb,
inc_ehl=@inc_ehl,
inc_eho=@inc_eho,
inc_rl=@inc_rl,
p_comments=@p_comments,
--frequency=@frequency,
--mail=@mail,
--fold=@fold,
--contact=@contact,
--date_added,
last_updated=@last_updated,
updated_flag=1,
ReturnAddressYN=@ReturnAddressYN
WHERE cust_num=@cust_num
------------------------------------------ code ----------------------------------------------
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Jan 14, 2008
Hi
I have the following problem (on 2 PC's now)
On 1 pc i installed VS2008 besides VS2005 and SQL 2005 (before i installed VS2008 everything was fine)
On the other is a fresh installed XP machine with only VS2008 SQL2550 and Office2007
Latets service packs are installed
On both machines when i open a table in SQL 2005 with the 'open table' command the show of the table is very slow.
Every row is updated file by field, the grid is not showing, the row and column headers are not 'grey' as normal.
Scrollign is impossible as the screen updates start again that slow.
Even a small table with 10 rows and 15 field behaves this slow. Its not workable.
What can be done to resove this???
Peter
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Dec 3, 2014
I have a database with enabling merge replication.
Then the problem is update query is taking more time.But when I disable the merge triggers then it'll update quickly.
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Dec 6, 2007
Hi All,
I would like to know whether it is possible to add and updated date column in a slow changing dimension table using the slow changing dimension data flow transformation.
I would like to keep track of what record is updated in the dimension table based on the data being processed.
Thanks for you help and information
Regards,
Fadzli
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Aug 14, 2001
In an ASP, I have a dynamically created SQL statement that amounts to "SELECT * FROM Server1.myDB.dbo.myTable WHERE Col1 = 1" (Col1 is the table's primary key). It returns the data immediately when executed.
However, when the same record is updated with "UPDATE Server1.myDB.dbo.myTable SET Comments = 'blah blah blah' WHERE Col1 = 1", the page times out before the query can complete.
I watched the program in Profiler, and I saw on the update that sp_cursorfetch was being executed as an RPC once per each row in the table. In a table of 78000 records, the timeout occurs well before the last record is fetched, and the update bombs.
I can run the same statements in Query Analyzer from a linked server and have the same results. The execution plan shows that a Remote Query is occurring on the select that returns 1 row, and a Remote Scan is taking place on the update scanning 78000 rows (I guess this is where all the sp_cursorfetch calls are happening...?).
How can I prevent the Remote Scan? How can I prevent the execution of the RPC sp_cursorfetch for each row in the remote table?
Thank you!
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Jul 4, 2007
Hi there,
We have a big problem here with merge replication, specifically whenever a schema change occurs. We are replicating schema changes, and triggers/stored procedures. The example is that we changed about 150 stored procedures and about 30 triggers. This is then replicated to the subscriber database (which is also a merge publisher for further remote systems that were offline at the time) over a 10Mb link - hardly low bandwidth. However, the replication process takes about an hour and a half - considering the SQL on the primary server took less than a minute to run this is a big suprise.
We've run a trace to see if we can identitfy what is going on. There seems to be a great number of calls to sp_MSunmarkschemaobject - we are still waiting for a trace to complete to fully analyse this however it looks like it calls this repeatedly for every stored procedure in the database. We are currently re-testing to one of the remote servers with the merge agent set to the slow profile (not much hope that this will alter the poor performance).
This task looks to be excessive - and certainly does not seem to function in a sensible manner. Has anyone else had similar issues or have any suggestions. This is very infuriating as it means that the servers are effectively offline for a minimum of and hour and a half (in fact the remoter servers take over 4 hours !).
Thanks.
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Nov 19, 2004
I have an update query running which to just now has been running for 22 hours running on two tables 1 a lookuptable that has just been created within the batch the other a denormalised table for doing data analysis on
the query thats causing teh problem is
--//////////////////////////////////// this is the one thats running
Print 'Update Provider 04-05 EmAdmsCount12mths : ' + CAST(GETDATE() AS varchar)
GO
Update Provider_APC_2004_05
set EmAdmsCount12mths =
(Select COUNT(*)-1
from Combined_Admissions
where ((Combined_Admissions.NHSNumber = Provider_APC_2004_05.NHSNumber) or
(Combined_Admissions.PASNUMBER = Provider_APC_2004_05.PDDISTNO)) and
(Combined_Admissions.AdmDate BETWEEN DateAdd(yyyy,-1,Provider_APC_2004_05.AdmDate) AND Provider_APC_2004_05.AdmDate) AND
Combined_Admissions.AdmMethod like 'Emergency%')-- and
-- CA.NHSorPrivate = 'NHS'))
FROM Provider_APC_2004_05, Combined_Admissions
any help in improving speed would be most welcome as there are 3 more of these updates to run right after this one and the analysis tables are almost double the size of this one
Dave
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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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Nov 11, 2007
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.
However, when I run the UPDATE statement against Table2 - at runtime I get rowsaffected = 0 which of course forces the code to throw an Exception (logically). When I take out the SQL stmt and run it manually in Query Analyzer, it runs BUT this is the output seen in the results pane...
(0 row(s) affected)
(1 row(s) affected)
How does on get 2 answers for one query like this...I have never seen such behavior and it is a real frustration ... makes no sense. There is only ONE row in the table that contains the key field passed in and it is the same key field value on the other table Table1 where the SQL returns only ONE message (the one you expect)
(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)
Set objRS = strSQL1.Execute
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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Jul 23, 2005
Hello,I am trying to update records in my database from excel data using vbaeditor within excel.In order to launch a query, I use SQL langage in ADO as follwing:------------------------------------------------------------Dim adoConn As ADODB.ConnectionDim adoRs As ADODB.RecordsetDim sConn As StringDim sSql As StringDim sOutput As StringsConn = "DSN=MS Access Database;" & _"DBQ=MyDatabasePath;" & _"DefaultDir=MyPathDirectory;" & _"DriverId=25;FIL=MS Access;MaxBufferSize=2048;PageTimeout=5;" &_"PWD=xxxxxx;UID=admin;"ID, A, B C.. are my table fieldssSql = "SELECT ID, `A`, B, `C being a date`, D, E, `F`, `H`, I, J,`K`, L" & _" FROM MyTblName" & _" WHERE (`A`='MyA')" & _" AND (`C`>{ts '" & Format(Date, "yyyy-mm-dd hh:mm:ss") & "'})"& _" ORDER BY `C` DESC"Set adoConn = New ADODB.ConnectionadoConn.Open sConnSet adoRs = New ADODB.RecordsetadoRs.Open Source:=sSql, _ActiveConnection:=adoConnadoRs.MoveFirstSheets("Sheet1").Range("a2").CopyFromRecordset adoRsSet adoRs = NothingSet adoConn = Nothing---------------------------------------------------------------Does Anyone know How I can use the UPDATE, DELETE INSERT SQL statementsin this environement? Copying SQL statements from access does not workas I would have to reference Access Object in my project which I do notwant if I can avoid. Ideally I would like to use only ADO system andSQL approach.Thank you very muchNono
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Nov 9, 2007
It appears to update only the first qualifying row. The trace shows a row count of one when there are multiple qualifying rows in the table. This problem does not exist in JDBC 2000.
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Nov 13, 2003
I am writing a data access web page, but I find that the excution speed is too slow.
My data base is just a data table which have five columns: id, code, quantity, price and Date. The data base has about 45000 rows. When I use OSQL or Query function, speed is just fine.
Here is the main code which I think cause the speed slow:
string conn = ConfigurationSettings.AppSettings["connectionstring"];
SqlDataAdapter adapter_2 = new SqlDataAdapter("select * from table",conn);
DataSet ds = new DataSet();
adapter_2.Fill (ds,"table");
DataTable YahooOrders = ds.Tables["YahooOrders"];
DataRow[] product = new DataRow[20000];
.......
foreach (string s in split) // actually the split here has only one string in it
{
product = table.Select ("code like '"+s+"%' and Date >='"+minDate+"' and Date <='"+table.Select("Date = Max(Date)")[0][1].ToString()+"'");
foreach(DataRow myRow in product)
{
int count = Convert.ToInt32(myRow[2]);
itemQuantity = count + itemQuantity;
revenue = Convert.ToDouble(myRow[3]) * count + revenue;
// get product code, ignore repeated code
int myIndex=code.BinarySearch( myRow[1] );
if ( myIndex < 0 )
code.Add(myRow[1]);
}
orderQuantity = product.Length + orderQuantity;
}
The first foreach actually excutes just one time, so it won' t cause any speed problem.
The second foreach' s job is to sum each column of specified rows which is product here.
So, any ideas about this?
Thanks!
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Mar 8, 2001
All,
Actually from the application the developers are using count(column) to know the no. of rows resulted by a statement which joins many tables but its taking lot of time.
Is there an easy way to get the count of records(result set) of the output.
I cant use sysindexes b'z i need the count of the output genereted by the SQl Statement which joins many tables and retrieves many rows.
Thanks,
Sajai
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Mar 24, 2006
Hi fellas (and girllas),
Got a problem (duh!). My MSSQL Server lags. Now, mind, it doesn't lag all the time. And it seems to be independent of the # of users trying to access the server. And it random clears itself up. And the problem doesn't present itself in SQL MGR, just on the web app we're running on it.
Setup:
SQL Server 2k running on 2k3 w/ IIS & backup exec.
All SQL data files are on a raid5 SCSI U160.
App:
Intranet App developed by us for us. ASP.NET & VB.NET.
Symptoms:
When queried server takes a LONG time to respond. So long infact it has become counter productive. When taking a look at the server, the CPU usage hovers between 50-75% and spikes up to 90% every now and then just for kicks. The memory usage is 2.35gb out of 4gb. To fix this we have to kill and restart all the SQL services.
Any thoughts on what to look at? There're indexes on the required FKs and the heavily queried columns. We're at a loss here.
Thanks for any helpful help!
=Me!
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Apr 7, 2006
Database has its few HUGE tables, but I experienced queries against few other very small tables to be incredible slow.
Anybody has the same or similar problem?
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Apr 15, 2008
A vendor's application is performing slow. Vendor tested it in QA and it's slow. End-users run it in PRD and it's slow. The application calls SP1, and SP1 calls SP2. Inside SP1 has a cursor. I believe as the db gets larger. The application is going to be even slower. What can I suggest to the vendor in order to fix it? Tell them to re-write the application code? Eliminate cursor?
Thanks
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May 27, 2008
Hello,
I have 4000 record in my table employee. it takes 13 sec to get data. It this normal ? What is wrong ?
Thanks
Code Snippet
CREATE FUNCTION [dbo].[VrniStrukturo] (@id_sod int)
RETURNS TABLE
AS
RETURN
(
WITH tree(id, parent_id, naziv, nivo) AS
(
-- Base case
SELECT
id,
parent_id,
naziv,
1 as nivo
FROM employee
WHERE id = @id_sod
UNION ALL
-- Recursive step
SELECT
e.id,
e.parent_id,
e.naziv,
eh.nivo + 1 AS nivo
FROM employee e
INNER JOIN tree eh ON
e.parent_id = eh.id
)
--SELECT *
SELECT id
FROM tree
--ORDER BY nivo, priimek, ime
);
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