SQL Server 2012 :: Ways To Improve Record Deletion Speed
Oct 13, 2015
I have a table (F_POLICY_TRANSACTION).This table has a couple of million rows in it.I am using a column named POLICY_TRANSACTION_BKEY to select records to delete (approximately 750k using the code below)This column has a non-clustered index applied..This is the code I have used:
WHILE 1 = 1
BEGIN
DELETE TOP(50000)
FROM F_POLICY_TRANSACTION with (tablockx)
[code]....
Problem is, it takes around 10 minutes to run.Is there any way it can be made more efficient?I have tried varying the rowcount with no success
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Jan 19, 2008
Dear All,
i've tried with indexed views, but because the view is referenceing another view, i was unable to create a clustered index on that view.
so please let me know how can i improve the performance of the view.
thank you very much
Vinod
Even you learn 1%, Learn it with 100% confidence.
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Apr 23, 2015
I have a pretty large DB and a fairly complex query. If I drop buffers and clear cache the query runs in 20 seconds returning 25K rows. Subsequent runs are 2 seconds. Is this the result of the results being cached, execution being cached, other? Are there good ways to close the gap between the initial and later runs? Does the cache stay present until the service restarts or does SQL recycle the memory and if so, based on what criteria?
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Dec 18, 2007
hi
in asp.net,i used sql server to store records.
in a table has 1 million records,but when i update the record,it is very slowly.
is "create index" helpful for "update" operation?
i need help,thanks a lot.
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Feb 7, 2007
I have a table which has around 132000 rows with 24 columns. I use rda.pull download the data to PDA. For query these data, I must create a index on 5 character columns.
The data download time is good enough, around 4 mins. But it takes 12mins to create the index.
Please help to give me any idea on how to improve the whole synchroniztion speed. Thanks!
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Nov 15, 2006
i have found the speed of sort is very slow in my sql (because sql is very complicated, i can't paste it on this page), how can i improve the speed of sort ?
are there better methods?
thks
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Apr 6, 2007
Hey all!
Sorry for the less then descriptive post title but I didn't find a better way to describe it. I'm developing an app in the express editions of VB and SQLserver. The application is a task/resource scheduler. The main form will have a datepicker or weekly overview and show all tasks scheduled per day. The problem is, I've got one or more people assigned to tasks and I wonder what's the best way to design this. Personally, I'd go for one Task table, a People table and a table that provides a link between them (several record per task, one for each person assigned linking TaskID and PplID). However, I don't see a nice way of showing this data to the end user, allowing him to edit/add etc on ONE screen.
To fix that the only way I see is just add columns to the Task table for every person with select boxes. This way everything can be done on one simple screen. This obviously does present some future issues.
On top of this, which people are available on a day varies and there should be an option to allow a user to set who is available on a specific day. Which would lead me to my first idea and add another table that would provide this. but then I'm having design issues again for the form.
I'm kinda stuck atm, can anyone shed some light on this. I'm sure there is an elegant way of doing this but I'm failing at finding it.
Thanks in advance,
Johan
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Nov 28, 2005
Please tell me the 4 ways to know the record count of a table?
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Mar 31, 2008
Hi,
I'm developing a service application (.NET 2.0) and this service listens to a network port. Client application connects to the service and passes messages to service and then the service has to write it in to a SQL Server 2005 database. Since there can be many messages per second I like to insert records as quick as i can and then response to the next request.
I was going to implement an internal queue to store messages in the memory and write to the database from the queue. I believe that SQL Server can handle a lot of requests per second hence would writing an internal queue be effective or are there any other techniques like connection pooling so I can pass the load to the sql server.
Or else should I use both. Appreciate your ideas on this.
Many thanks,
VJ
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Oct 24, 2000
I am having some problems with the time it takes to create records. I am
running on a Compaq proliant 3000 with dual 400 Pentium II with 512 kb.
It is taking about a 20 minutes to create 100,000 records in a VB
application using a stored procedure. Any suggestions on how to speed
up this process and get better performance? Can someone try this on
their system so I can get an approximation as far as how much time it
should take to make that amount of records. Any help would be appreciated.
Jim
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Oct 18, 2007
Hi,
I have several data bases on a server (SQL Server 2000 only, no web server installed) and lately, as the company keeps gowing, my users complain saying the server gets slow, (this dbs are well designed and recieve optimizations and integrity checks, etc) because of this, Im thinking about getting a new server to repleace my old ProLiant ML 330 which was bought 4 years ago but Im concerned about what server arquitecture or characteristic can help me best to improve response performance, is it HD speed? Processor speed? or more Ram? I want to make a good decision, so Id really appreciate your help...
Thanks, Luis Luevano
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Jun 3, 2014
I have a 2table like
create table test1
(col1 identity(1,1),
col2 varchar(20)
)
create table test2
(old int,
new int)
Existing record in test1 table
(1,'test')
Now I want to insert a new record into test1 and then capture the old and new identity columsn in test 2 table
i.e. after insert test1 table will be
1,test
2,test
and test2 table will be like
1,2 -- old and new identity columns are captured during insert and stored in test2 table.
If the repeat the process again test2 table will be like
1, test
2,test
3, test
and test2 table will be
2,3 --- test2 table will always have only one record. old records will be deleted.
Using output clause i can get the new identity value.. but how can i get the old identity value and insert that into test2 table..
I am not willing to do a self join after the record is inserted into test2. I wanted to get the old ident value during insert of new ident value.
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Nov 7, 2014
To see where is the problem I am trying to count rows in the database.First I create a table A with 2 columns namely tablename, rowbefore and rowafter and I insert records in it as below.
INSERT INTO A
SELECT TableName = o.name, '', Rows = max(i.rows) FROM sysobjects o
INNER JOIN sysindexes i ON o.id = i.id
WHERE xtype = 'u' AND OBJECTPROPERTY(o.id,N'IsUserTable') = 1
GROUP BY o.name
ORDER BY o.name
Then I update rowbefore with rowafter as below.
UPDATE A SET rowbefore = rowafter
Now I launch my application with update records in the database.Then I am trying to update rowafter with new records as below.
UPDATE A
SET rowafter = (SELECT max(sysindexes.rows) FROM sysobjects
INNER JOIN sysindexes ON sysobjects.id = sysindexes.id
WHERE xtype = 'u' AND OBJECTPROPERTY(sysobjects.id,N'IsUserTable') = 1 AND A.tablename = sysobjects.name)
Does this update really update my column rowafter or not?
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Feb 10, 2015
CREATE TABLE TEMPS(MEMBERNBR VARCHAR(11), STARTDATE DATETIME, ENDDATE DATETIME)
INSERT INTO TEMPS(MEMBERNBR, STARTDATE, ENDDATE) VALUES('12345678901', '01/01/2015', '01'01'2015')
INSERT INTO TEMPS(MEMBERNBR, STARTDATE, ENDDATE) VALUES('12345678901', '01/01/2015', '12'31'2099')
I need to retrieve only the record where the STARTDATE is '01/01/2015' and the ENDDATE is '12/31/2099'
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Mar 18, 2008
How many ways we can link a remote server?
I know we can do using linkedserver . Is there any others to do?
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Jan 2, 2007
Hi
can anybody tell how to compare two databases on sql server
thank u
vizai
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Feb 10, 2014
I have a table (Billing Table) having multiple records for people having one record per person per each month.
How to get a list of the guys having record just for one month (say feb) and doesn't have any other months.
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Oct 30, 2014
I have created table in which there are four columns (id, date, parcelname, parcelnumber) and 10 rows. I want to count record of the column parcelnumber but condition that, in between two different dates the record should be counted.
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Dec 9, 2014
We have Three Tables in sqlserver2012
Master Table
OrderID PackageID CustomerName
1 1 Abc
2 2 Bcd
3 1 xyz
Child1 Table
OrderID ControlName
1 Row1COlumn1 (It Means Pant in Red Color is selected by user(relation with Child2 Table))
1 Row3Column1 (It Means Gown in Blue Color is selected by user(relation with Child2 Table))
1 Row4Column3 (It Means T Shirt in White Color is selected by user(relation with Child2 Table))
2 Row1Column2 (It Means Tie in Green Color is selected by user(relation with Child2 Table))
2 Row3Column1 (It Means Bow in Red Color is selected by user(relation with Child2 Table))
Child2 Table
PackageID Product Color1 Color2 Color3
1 Pant Red Green Blue
1 Shirt Blue Pink Purple
1 Gown Blue Black Yellow
1 T Shirt Red Green White
2 Tie Red Green White
2 Socks Red Green White
2 Bow Red Green White
We want to have result like
OrderID PackageID CustomerName Pant Gown T Shirt Tie Bow
1 1 ABC Red Blue White x x
Blue
2 2 Bcd x x x Green Red
I have tried
;with mycte as (
select ms.OrderID,ms.PackageID
,ms.CustomerName
, Replace(stuff([ControlName], charindex('Column',ControlName),len(ControlName),''),'Row','') rowNum
,Replace(stuff([ControlName], 1, charindex('Column',ControlName)-1 ,''),'Column','') columnNum
From child1 c inner join MasterTable ms on c.Orderid=ms.orderid)
[code]....
it works if we have a product in one color only. like if we have pant in red and blue then its showing just first record
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Mar 3, 2015
I have the following tables:
--acts as a transaction table
CREATE TABLE #TestData (
id int not null identity(1,1) primary key,
account varchar(10) not null,
deposit int not null
[Code] ....
--desired results
-- within each account group, when a individual record causes the groups running total to exceed the group's budget, show the difference that causes the groups running total to exceed the budget as unbudgeted. The amount of that transaction upto the budget amount show as renewal. For any succeeding individual records in the group, the amount of that transaction is Unbudgeted.
Here's the SQL I have thus far...
SELECT a.id
,a.account
,a.deposit
,a.total
,a.budget
,case when a.total <= a.budget
[Code] ....
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Mar 9, 2015
I am looking to update a record from a previous row. So if there is a value of total goods in week 1, i want that value to carry forward to the value of goods in week 2. Is there any SQL as an example of the best way to accomplish this? I can query it using lag() which works great but i need the source data itself to update as the end-users are accessing the data via lightswitch, so when they save a change, i want the trigger (or whatever you recommend) to update the source table.
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May 26, 2015
I have records like below, single query to get result below, basically records that has single entry only, which has type '0'
table : temp_test
idtype
c10
c25
c30
c40
c47
c59
c64
c60
c77
c80
c90
Result out of query
idtype
c10
c30
c80
c90
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Jun 25, 2015
I am looking for the best way to check to see if any columns are still NULL in a record. I have a form that gets filled out by users and the values entered into TableA. There are 6 columns in the table, 5 are responses and column6 indicates if the record is complete. So I want a way to see if all of the first 5 columns are NOT NULL and, if so, mark column6 with a 1.
I am thinking this would be a good thing for a trigger on INSERT or UPDATE to check to see if the first 5 columns are filled in and then mark the record as complete.
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Nov 2, 2015
I have written a SQL statement.There is a table called customer.It contains all customer data with customerid as PK.There is another table called logs and it contains customerid as foreign key and it contains a field to keep more than 90 days older user accounts.That field name is "Checked"
What I need get all records from these 2 tables and remove/hide more than 90 days older customers from record set.See my illustration.
I have written this code but I dont understand how to remove more than 90 days older user from result (because customer table doesnt contain a record called "Checked")
SELECT *
FROM [dbo].[Customers],[dbo].[VIESLog] WHERE [dbo].[VIESLog].[Checked] < DATEADD(day, -90, GETDATE())
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Jan 27, 2014
I have 2 tables People and Scores. A person might have 1-5 scores (unknown at time of Query). I would like to query the two tables into a results table and if person does not have a record the score will be zero. Scores also have a test number so you know which score it is. I can get it done with Stored Proc but I have to use Temp tables and then put the temp tables together.
People
Name ID
Tom5
Dick2
Harry3
Larry4
Curly1
Scores
PrimaryKeyPeopleIDScoreTestNumber
12801
[code]....
Results
PrimaryKeyPeopleIdScore1Score2Score3Score4Score5Name
1110090807090Curly
22800000Dick
33909010000Harry
44507090900Larry
559070000Tom
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Jun 2, 2014
Having below data. SHCOMP (Customer ID), CBLNAM ( Customer name), SHDESC (service description), SHAMT (service charge), SHTYPE (F-> From T-> To)
CREATE TABLE #Temp(
[SHCOMP] [numeric](7, 0) NOT NULL,
[SHDESC] [char](35) NOT NULL,
[SHTYPE] [char](1) NOT NULL,
[SHAMT] [numeric](9, 2) NOT NULL,
[Code] ....
I need to remove records that have the same ID, Name, Description and Amount summary = 0, For example
SHCOMP CBLNAM SHDESC SHAMT SHTYPE
123 cust1 desc1 45 F remove
123 cust1 desc1 -45 T remove
123 cust1 desc1 45 F remove
123 cust1 desc1 -45 T remove
123 cust1 desc1 45 F
[Code] ....
Results
SHCOMP CBLNAM SHDESC SHAMT SHTYPE
123 cust1 desc1 45 F
123 cust1 desc1 -35 T
234 cust3 desc2 30 F
here is what I did but didn't work because sum is <> from 0 so is leaving all records
select SHCUST, SHDESC, ABS(SHAMT) SHAMT
into #t1
FROM #Temp
group by SHCUST, SHDESC, ABS(SHAMT)
having SUM(SHAMT)=0
order by SHCUST
delete S from #Temp S
join #t1 T on T.SHCUST = S.SHCUST and T.SHDESC = S.SHDESC
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Aug 6, 2014
I am inserting a record in XYZ table(DB1). Through trigger it will update ABC table(DB2).
I am getting error when doing above thing. What are the roles to be set to user to avoid above problem.
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Feb 23, 2015
I have a table full of service invoice records. Some of the invoices are continuous, meaning that there may be an invoice from 01-16-2015 through the end of that month, but then another invoice that starts on feb 1 and goes for 6 months.
I want to only pull the most recent. Keep in mind that there may be other invoices in the same table for a different period. An example might be:
FromDate ToDate Customer Number Contract Number
02/01/2015 07/31/2015 2555 456
01/15/2015 01/31/2015 2555 456
04/01/2013 09/30/2015 2555 123
03/13/2013 03/31/2013 2555 123
From this table, I would like a query that would give me this result:
01/15/2015 07/31/2015 2555 456
03/13/2013 09/30/2015 2555 123
There will likely be more than just 2 consecutive records per contract number.
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Jan 14, 2007
Hi guys , is there any ways/suggestions for strengthen up the security for SQL server 2005 ? Due to several attacks from unknown places to my database's server , so I would like to get a way for increase the SQL security. Hope able to gather some info from web as well. Thx a lot guys.
Best Regards,
Hans
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Nov 3, 2014
There are many duplicate records on my data table because users constantly register under two accounts. I have a query that identify the records that have a duplicate, but it only shows one of the two records, and I need to show the two records so that I can reconcile the differences.The query is taken from a post on stack overflow. It gives me 196, but I need to see the 392 records.
How to identify the duplicates and show the tow records without having to hard code any values, so I can use the query in a report, and anytime there are new duplicates, the report shows them.
SELECT
[groom_first_name]
,[groom_last_name]
,[bride_first_name]
,[bride_last_name]
[code]....
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Dec 29, 2014
What I want to do is return a row of data when my query doesn't return a record. I have two tables:
CREATE TABLE dbo.abc(
SeqNo smallint NULL,
Payment decimal(10, 2) NULL
) ON PRIMARY
[Code] ....
So when I run the following query:
SELECT 'abc' + '-' + CAST(SeqNo AS VARCHAR) + '-' + CAST(Payment AS VARCHAR) FROM abc WHERE SeqNo = 1
UNION
SELECT 'def' + '-' + CAST(SeqNo AS VARCHAR) + '-' + CAST(Payment AS VARCHAR) FROM def WHERE SeqNo = 1
abc-1-200.00
abc-1-500.00
As you can see since 1 doesn't exists in table 'def' nothing is returned as expected. However, if a row isn't returned I want to be able to enter my own row such as
abc-1-200.00
abc-1-500.00
def-0-0.00
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Feb 6, 2015
I have a table of "applicants" with unique applicant id and another table "reviews" with reviews which has unique id and Emplid and contains general program name like Math and then may contain 3 addition rows for specific program like Calculus, algebra, geometry etc.
There may or may not be a record for each applicant id in table reviews or there can be 1 or more than one record in reviews based on level of review( General or Specific).
All the general reviews has “Math” as Program_code but if there are more reviews, they can have Program_code like “Cal” , “Abr”, “Geo”
I want to join the tables so I can get all the records from both the tables where Program_code in reviews table is “Math” only.
That is I want to join the table and get all the records from reviews table where the program_code is “Math” only
How can I do that?
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Apr 2, 2015
So I have a query that need to find the most recent datetime record each day for a customer. So I have a query that looks like this:
SELECT
dhi.[GUID],
dhi.[timestamp],
la.[bundle_id],
dhi.[value]
FROM
[dbo].[DecisionHistoryItem] as dhi WITH(NOLOCK)
[Code] ....
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