If I run an UPDATE query on a table which is partitioned by the column I am updating - will the records be moved to another partition?
ie. I have a table where Historical bit column marks whether a particular record should go to Partition1 (=0) or Partition2 (=1). Now, I update a record in that table and change the Historical column value from 0 to 1. What happens with that record?
I have some table that need to be partitioned and archive one of the partitions.
I did this in Oracle several years ago but not in SQL Server.
I'm looking for a basic example on how to do this.
I know the basic steps but the examples that I found on the Web were not quite what I'm looking for.
[url][/
Partition an existing SQL Server Table
url]
BOL says the following (headed with important):
"The HOST_NAME() function returns an nchar value, so you must use CONVERT if the column in the filter clause is of a numeric data type, as it is in the example above. For performance reasons, we recommended that you not apply functions to column names in parameterized row filter clauses, such as CONVERT(nchar,EmployeeID) = HOST_NAME(). Instead, we recommend using the approach shown in the example: EmployeeID = CONVERT(int,HOST_NAME()). This clause can be used for the @subset_filterclause parameter of sp_addmergearticle (Transact-SQL), but it typically cannot be used in the New Publication Wizard (the wizard executes the filter clause to validate it, which fails because the computer name cannot be converted to an int). If you use the New Publication Wizard, it is recommended to specify CONVERT(nchar,EmployeeID) = HOST_NAME() in the wizard and then use sp_changemergearticle (Transact-SQL) to change the clause to EmployeeID = CONVERT(int,HOST_NAME()) before creating a snapshot for the publication."
We have setup a publication with this scenario and by accident a nonconvertable HOST_NAME slipped in when someone tried to create a subscription in the database with the wrong parameters.
The consequence was not only that he failed to create the misconfigured subscription but all our several hundred subscriptions failed to synchronize from this point on.
It's weird that one single subscription causes all other subscriptions to fail (BUG??) but how to resolve this miserable situation?
First thing I tried was to delete the faulty partition via the Publication Wizard but all I got was an nasty error which was also related to the SQL Server trying to convert the partition string to integer.....
The next thing I tryed was setting PreComputed Partitions to false and re-initialize all subscriptions. Also this did not help. All the failed subscriptions continued to fail synching.
As a thing of last resort I changed the article filter to convert the partition key to nvarchar and then compare it to the HOST_NAME() value. Thank god this worked and the existing subscriptions started to synch successfully again.
So my question is:
How do you correctly recover in this situation?
As it really a wanted feature that one faulty partition causes all subscriptions to fail?
Shouldn't it be possible to delete the unwanted partition?
Thank you for your help!
regards, Stefan
I want to move the SQL Server 7.0 root directory from C:MSSQL7 to D:MSSQL7 (same host). I see the startup parameters under server properties could be changed to point to the new location, but Master has the paths to all the databases recorded in sysdatabases table, so at least that would have to change, and sysdevices table points to files on C:. And maybe the NT registry points to some files there too. Anyway, is there some established method to move it? If that isn't practical, at least I would want to move TEMPDB ( perhaps by using the SP_DETACH and SP_ATTACH method ). My main database is already on D: so I do not have to move it. Any informed advice would be appreciated. Thanks.
View 1 Replies View RelatedHello, I am pretty new with SQL Server 2005.
I have installed SQL Server Express Edition. I have migrated a set of tables from Oracl10g (by using Microsoft's Migration Tool Kit).While I am trying the following simple update command, the session hangs and it never finishes !!!!!!!!!!!!
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
select pos_key from pos_station where staff_key = 1105
POS_KEY
=======
NULL
update pos_station set pos_key = 1 where staff_key = 1105
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
The table has a few constraints and a couple of indices in place.
Then I create another table (but no contraints or indices), just copy the data from the problematic one and the update WORKS (in msecs) :
update pos_station_new set pos_key = 1 where staff_key = 1105
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Is there any way to tell if the table (any table in SQL Server) is corrupted or not ?
How can I tell if a session is waiting for something and what is that something ?
Thank you very much for your help.
Tom
I am using a WriteBack Partition to receive data from various inputs and appends any new data that I add to the WB partition.Â
I am able to read the data immediately in the WB partition through a Fact partition query. This is working at this point as desired.
Eventually I want to move the data from the WB partition into Fact Partition. How can I do this, manually and through automation.Â
I have a query similar to the following. The intent of this query is to retrieve the top 6 records meeting the specified criteria (LOGTYPENAME = 'Process Status Start' OR LOGTYPENAME = 'Process Status End' ) based on most recent dates. Please keep in mind that I expect to return up to 6 records for each unique LogProcessName. This could be thousands of different LogProcessNames with up to 6 records for each.
1) The table I am executing against currently is very large in size and thus takes a long time to execute against. It would seem there must be a more efficient query to get the results I am looking for?
2) CTE doesn't work on SQL 2000. I need a query that does.
3) I cannot modify the database itself in the process.
;WITH cte AS (
SELECT [LogProcessName], [LogBody], [LogDate], [LogGUID], row_number()
OVER(PARTITION BY [LogProcessName]
ORDER BY [LogDate] DESC)
AS RN
FROM [LOGTABLE]
WHERE [LogTypeGUID] IN (
SELECT LogTypeGUID
FROM LOGTYPE
WHERE LogTypeName = 'Process Status Start'
OR LogTypeName = 'Process Status End' ) )
SELECT *
FROM cte
WHERE RN = 1 OR RN = 2 OR RN = 3 OR RN = 4 OR RN = 5 OR RN = 6
ORDER BY [LogProcessName] DESC, [LogDate] DESC
Does anybody else have any idea that would yield the results that I am looking for and take into account items 1-3 above?
Thanks in advance.
I have a question here.
I have a Audit tables database. I want to archive the Audit Tables data to another new database in the same server and remove the data in the Actual database but continues with the table seed where it's the primary ID.
Example:
I have a AuditProducts Table with AuditID as BIGINT and auto increment value.
contains10,000 records in AuditTable Database.
I want to archive the tables to a new database: Audit200707
After archived, the AuditProducts Table in AuditTable database will remove all the records and continues with 10001 in the next record.
How can I done the whole process using T-SQL so that it can schedule and run for every month? BTW I am using SQL Server 2005 SP2.
Thanks and regards,
I have 3 columns. I would like to update a table based on job_cd and permit_nbr column. if we have same job_cd and permit_nbr, reference number should be same else it should take max(reference number) from the table +1 for all rows where reference_nbr column is null
job_cdpermit_nbrreference_nbr
ABC1 990 100002
ABC1 990 100002
ABC1991100003
ABC1992100004
ABC1993100005
ABC2880100006
ABC2881100007
ABC2881100007
ABC2882100008
ABC2882100008
A common partitioning scenario is when the partition column has the same value for every record in the partition, as opposed to a range of values. Am I the only person who wonders why there isn't an option to automatically partition a table based on the unique values of the partition column? Instead of defining a partition function with constants, you ought to be able to just give it the column and be done. This would be particularly valuable for tables partitioned on a weekly or monthly date; when new data is added it could simply create a new partition if one doesn't already exist.
View 4 Replies View RelatedHi allI just ranUPDATE dbo.tbl_forecastedSET update_ref = 0but it only updated the first 10000 records. I'm wondering if anyone cantell me why this is, and can I get around it.I have looked on google and found a few references, but nothing in too muchdetailsthanks in advanceAndy
View 2 Replies View RelatedI have 2 tables with this schema
CREATE TABLE tableValues(
[LASTENCRYPTIONDT] [datetime] NULL,
[ENCRYPTIONID] [int] NULL,
[NAME] [varchar](50) NULL
[Code] ....
I want to update tableToUpdate in batches of 5000 per batch and set the lastenecryptionDT to null based on the the join to the tableValues using the column ENCRYPTIONID, and also output updated rows into another table. Incase I would need to do a rollback.
I have the below requirement:
1. Group records according to docno column.
2. Records will sort in desc order. (According to date1 column)
3. In date1 column if more than one date is same than we ll consider the date2 column.
EX: 2008-04-30 00:00:00is same here so sorting will happen based on Date2 column. So internal sorting should happen instead assigning random values.
4. Number column is the expected output column.
docnodate1 date2 Number
d1 2008-08-25 00:00:00 2009-09-08 11:23:41 1
d1 2008-04-30 00:00:00 2008-09-08 14:40:53 2
d1 2008-04-30 00:00:00 2008-09-08 14:29:43 3
d1 2008-04-30 00:00:00 2008-09-08 13:30:04 4
[Code] ....
I have a situation where deleting old records is blocking updating latest records on highly transactional table and getting timeout errors from application.
In details, I have one table called Tran_table1 in OLTP database. This Tran_table1 is highly transactional table, it will receive data for insert/update continuously
While archiving 2 years old records from Tran_table1 into Tran_table1_archive in batches(using DELETE OUTPUT INTO clause), if there is any UPDATEs on Tran_table1,these updates are getting blocked and result is timeout errors in application.
Is there any SQL Server hints to avoid blocking ..
I need to partitioning the table on which most expensive query run.
Every day 500000 lac records inserted/update in that table
How to create what impact on performance while retrieving the records.
I have 3 columns. I would like to update a table based on job_cd and permit_nbr column. if we have same job_cd and permit_nbr, reference number should be same else it should take max(reference number) from the table +1 for all rows where reference_nbr column is null
job_cd permit_nbr reference_nbr
ABC1 990 100002
ABC1 990 100002
ABC1 991 100003
ABC1 992 100004
ABC1 993 100005
ABC2 880 100006
ABC2 881 100007
ABC2 881 100007
ABC2 882 100008
ABC2 882 100008
I want to find a way to get partition info for all the tables in all the databases for a server. Showing database name, table name, schema name, partition by (maybe; year, month, day, number, alpha), column used in partition, current active partition, last partition (for date partitions I want to know if the partition goes untill 2007, so I can add 2008)
all I've come up with so far is:
Code Block
SELECT distinct o.name From sys.partitions p
inner join sys.objects o on (o.object_id = p.object_id)
where o.type_desc = 'USER_TABLE'
and p.partition_number > 1
Here is the sql code I am using. However this code adds duplicate records. It adds the record and exactly one extra record... any help would be greatly appreciated...
It's wrapped in a little ASP code:
sql2 = "INSERT INTO prodcampsignup " &_
"(Camp_ID,UserName,Password,CampName,Host,Director ,Contact,Address, " &_
"City,State,Zip,Country,Phone,AlternatePhone,Fax,C ontactEmail,AdminEmail, " &_
"URL,CampProfile, InsertTime)" &_
"SELECT * FROM tempcampsignup WHERE Camp_ID = " & lastid
I have the following in my table. As you can see the Geo field is null (which is of type Geography), what I'm trying to do is populate that with an update statement by comparing the latitude and longitude for each row so I can then work out the distance, I've been following this tutorial to workout the distance which is giving me the desired results
[URL] ....
The issue I have is passing in the points i.e latitude and longitude and then updating the Geo field for the row, I currently have 11938 rows in my DB so I need to run this against all of them. I thought I had it I was thinking of update then select from the source but then I realized I need to pass the lat and long in for the points and that's where I got confused
Hi,I need to create a partition table but the column on which I need tocreate a partition may not have any logical ranges. So while creatingor defining partition function I can not use any range.likeCREATE PARTITION FUNCTION my_part_func (NUMERIC(7)) AS RANGE LEFT FORVALUES (1,100,1000);Is there any way to define partition function in SQL Server somethinglike Oracle HASH partitions where logical range is unkown?ThanksSameer
View 5 Replies View RelatedI wanted to set up a mechanism that would transfer blocks of records (a few dozen to in rare cases a few thousand), with slight modification, from one database to another. It's a sort of custom partial archiving process that would be triggered from a web-based admin application in plain old ASP (not .net alas). Records in the target db would be identical except:
-- the primary key in the source table, an identity field, would be just an integer in the target table
-- the target table has an extra field, an integer batch ID supplied by the web application that triggers the process
It's a simple, if not efficient matter to do it within the web application: query the source table, suck the records into memory, and insert them one by one into the target db. This will be an infrequent process which can be done at off-hours, so a bit of inefficiency is not the end of the world. But I wondered if there is a more sensible, orthodox approach:
-- Could this process be done, and done efficiently, as a stored procedure with the batch ID passed as a parameter?
-- Is there any way to do a bulk insert from a recordset or array in memory using plain ASP, ADO and SQL? And if so, is that better than inserting records one by one?
I realize that the ASP.NET tableadapter and dataset features might provide a good solution, but in the short run I can't rewrite the whole application. Advice on the best general approach from an ASP-ADO platform would be appreciated, and I will try to figure out the details.
Is it possible to partition an existing table on a foreign key (datetime) column? Also would partition switching work?
View 0 Replies View Relatedi have a total of 5 records to update. one being a summary row and the other four being 1,2,3,4 record ids. is there any way to update these 4 records w/o using 4 seperate updates???
thanks,
e3witt
First off, Ive been asking a lot of questions lately and I want to sincerely thank those who have been posting VERY helpful replies. I have learned much in these past few weeks.
That being said I have hopefully one of my last questions before this project is complete.
Im running a DTS that imports data from a flat text file and updates 6 different tables. In one of my tables, "PERSON", I only want the records to be inserted or updated if the FCN field is new, or unique.
Here is my code that updates the table (without regard for uniquneess):
INSERT INTO PERSON (FIRST_NAME, LAST_NAME, MIDDLE_NAME, FCN)
SELECT "FIRST", "LAST", "MIDDLE", FCN
FROM DATAGRAB WHERE RECORD_DATE = convert(varchar(8), getdate()-1, 112)
How can I convert it to only update records with a unique FCN value?
Ive posted on here many times before and got the answers, so hopefully this time will be like the rest...you guys are SO good at SQL.
I have a database that has lots of fields. I use some specialised email marketing software that allows me contact each record. What I have done in the past is export the contacts i wanted to email and then format the columns like this: (all done in excel)
EmailAddress Website Salutation Website1 Website2 Website 3
info@eg.co.uk www.eg.co.uk David eg.co.uk Eg.Co.Uk Eg
test@red.co.uk www.red.co.uk Sue red.co.uk Red.Co.Uk Sue
After each list looks like this, i then import this data into Access and from there our email software pics up the data and emails accordingly.
Now here comes the problem...
We have decided that we now want everything done within our sql database. Which means we want clickthroughs recording and open rates etc all appearing in our database. (we have all this sorted out)
However we dont have Website1, 2 or 3 fields in our database. We know that they need to be included in our db somewhere but with half a million contacts we don't want to do it one by one obviously.
We want a simple where we export all our contacts and then format them so they include website1, 2 and 3. THEN we want to import them, simply updating the contacts with that new data. (Or is there a SQL way of creating temp tables so these fields dont even need to be included in the db?)
I hope i managed to explain myself in way you can all understand.
Thanks
I have an Excel file of 1362 rows and 30 columns. I need to load itinto my database to update addresses and phone numbers. Each recordhas its own ID number, which is defined in the Excel file and in thedatabase. The database is Millenium Version 7.2.1.1. I can't reallyfind any signifigance between any of the records. Is there a way I canjust load them into my database and update each record? Maybe by usingthe ID number?Dane WinklerDatabase SpecialistSt Vincent CollegeJoin Bytes!
View 4 Replies View Relatedhow to set up the partitions.I have a transaction table with 50 million records that's very hard to query. it holds data for the last 4 years but the application only ever looks at the last 6 months so i believe this is and ideal candidate for partitioning.
Would it be better to
1) create a partition based on each year for all data so would have a 2015, 2014, 2013, 2012?
2) create 1 partition based on month for this years data then 3 based on year so would have jan,feb,march,april,may..., 2014, 2013, 2012
For 1) would you have to perform some maintenance at the turn of each year for accommodating the next years data. For 2) although this would give better performance as query's are mostly in the last 6 months wouldn't this have more maintenance to move month data to year partitions come the turn of the year and then create the next years months partitions.
I'm having a bit of problem putting together a query that will update records in one table from another table. I've got 2 tables lets call them tblA and tblB.In tblA there is EID(int), QID(int), OID(int) and in tblB OID(int) and QID(int). Also there is an input parameter @EID.What I want to have happen is when someone inputs @EID then tblB gets updated from tblA. To give you a heads up there are no PKs or FKs in either of the tables.If there is an OID in tblA it takes the QID from tblA and places it in tblB where OID from tblA and tblB match.Hopefully this makes sense I thought that I could do something like this:CREATE PROCEDURE test3(@EID int)AS UPDATE tblUsedSET QuestionID = (select QuestionID from tblExamQuestions where ExamID = @EID)WHERE OrderID = (select OrderID from tblExamQuestions where ExamID = @EID)GOBut I get an error that says that there are to many records being returned by the subqueries. Winston
View 11 Replies View RelatedHello Everyone,
I have a table with 5 columns (col1, col2, col3, col4). I want to do is:
1) To check if any two records are duplicates (if the the values in col1 of record A are identical to Record B, two records are considered as duplicates);
2) if two records are duplicate, I want to mark Record B as "Dup" in col4 ;
3) move the data of Col2 of Record B to col3 of Record A.
I have tried to use CURSOR for the job. I would appreciate if anyone can give me some hints for updating records using Cursor.
My script looks like this:
CREATE PROC Mark_duplicate
AS
DECLARE @var1_a, /* To hold the data from Record A */
@var2_a,
@var3_a,
@var4_a,
@var5_a,
@var1_b, /* To hold the data from Record B */
@var2_b,
@var3_b,
@var4_b,
@var4_b,
/*** Create a CURSOR ***/
DECLARE Dup CURSOR
FOR SELECT col1, col2, col3, col4
FROM TableA ORDER BY col1, col2
FOR UPDATE OF col1, col2, col3, col4
/**** OPEN the CURSOR ****/
OPEN Dup
FETCH NEXT FROM Dup into @var1_a, @var2_a, @var3_a, @var4_a
WHILE ( @@FETCH_STATUS =0 )
BEGIN
FETCH NEXT FROM Dup into @var1_b, @var2_b, @var3_b, @var4_b
WHILE ( @@FETCH_STATUS =0 )
BEGIN
If ( @var1_a = var1_b ) THEN
.
.Updating statements
.
.
ELSE
SET @VAR1_a = @var1_b, @VAR2_a = @var2_b,
@VAR3_a = @var3_b, @VAR4_a = @var4_b
FETCH NEXT FROM Dup into @var1_b, @var2_b, @var3_b, var4_b
END
END
CLOSE DUP
.
.
.
Thanks a lot. Have a good day!
Lunjun
Meg writes "Hi,
I have a table that has 4+ million records. I need to update those records. I am facing some performance issue. Can someone please advice?
update stage
set batch_status = 1
where update_status = 0
Update transaction
Set aId = s.aId,
b = s.b,
from stage s
Where s.aId = transaction.aId
and s.batch_status = 1
Update stage
Set update_status = 1,
batch_status = 2
where
batch_status = 1
When I run the above query with "set rowcount 1000", it runs in one minute. When I run the query for "set rowcount 10000", it runs in 1 hour 56 minutes. Can someone help me to optimize it?
Thanks.
Meg"
Here's a problem that I can't find anyone else has run into. I'm usingAccess and SQL Server, but the theory would be the same for any db.I have a large number of tables that contain linked records(intersection tables mostly). In the interest of space, I'llillustrate an example:tblStudents (ID, Name)tblTeachers (ID, Name)tblClasses (ID, Name)tblEnroll (StudentID,ClassID,TeacherID)I have about 10 people who each use a separatecopy of this database (in access). I want them (at the end of eachday) to be ableto update all the records that they entered that day into a databasethat I have setup on a server (SQL Server 2005). Both databases havethe exact same structure.Caveat 1: All of the classes, students, and teachers are not the sameon each database, but the server database should contain all of them.Caveat 2: There is no way for the clients to automatically insert intothe server, they are offsite and out of range.Herein lies the problem: when a record is inserted into the server froma client, all of the links are lost since the ID will be different onthe server that it was on the client.I don't think a simple update / insert query will work, and most db'sand languages don't play nice with recordset appends.What are your thoughts??
View 1 Replies View RelatedI have a really simple query I'm trying to execute. I want to replace all instances of int X (8) in Column A (LastActivityID) with int Y (27) but the following SQL returns the said error. I understand the error, but not sure how to script the SQL differently to get the intended result. Thanks in advance.
Code Block
UPDATE Item SET LastActivityID = 27 WHERE LastActivityID = 8
Error: Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
I have a following problem: I€™m importing records from an Access table into a SQL Server Table. I€™m using lookup to determine if a record already exists in the SQL Server table and in that case I should update the record if it was modified.
I thought of using OLE DB Destination for new records (done, works fine) and OLE DB Command Transformation to update the modified records. It all works but the thing that bothers me is that my table has approx. 40 columns so my OLE DB Command is very long (update table set col1 = ?, col2 = ?, col3 = ? €¦€¦). The other problem is that I€™m always updating all the columns even if only one column was modified.
Is there a better way to update the existing records?
Any help is appreciated.
Thanx
Sara