InstantForum.NET v2.9.0SQLServerCentralhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comSat, 25 May 2013 06:35:07 GMT20http://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxHi Actually I have a requirement as below 1) To have a database in sql server 2008 with a set of tables (which will have the fields snapshotdate and frequency along with other data fields) 2) This set of tables should maintain only the latest 2 daily snapshot dates of data and latest 3 monthly snapshot dates of data and the older one should be removed everytime the new data comes in. --> Please let me know the complete steps of how we can do it through partitions in SQL server 2008 which I require very urgently Thanks,CletusWed, 08 Dec 2010 03:43:35 GMTantonyrajcletushttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspx[quote][b]ningaraju.n (8/25/2010)[/b][hr]Thanks stewart,I understand most of your points except the below point>build the table on the new filegroup I have to do partition for existing tableand can you please suggest the way to do that point('build the table on the new filegroup')[/quote]There are 2 methods of doing so.Please refer to [url]http://msdn.microsoft.com/en-US/library/ms175864(v=SQL.90).aspx[/url] for details (specifically the section regarding Converting a Nonpartitioned Table to a Partitioned Table)Wed, 25 Aug 2010 04:36:55 GMTStewart "Arturius" Campbellhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxThanks Rosa,I don't know about the availability of disks,but we want partition to improve the performancePlease suggest in this regardWed, 25 Aug 2010 04:24:35 GMTningaraju.nhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxThanks stewart,I understand most of your points except the below point>build the table on the new filegroup I have to do partition for existing tableand can you please suggest the way to do that point('build the table on the new filegroup')Wed, 25 Aug 2010 04:06:54 GMTningaraju.nhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxHi,Just a matter of complementing our friend's answer:How many disk do you have available to spread your files? Why do you want to split your table? [Is it for increasing performance?]::[Is it a matter of space?]You have also to create a Partitioned Index and not just common index to get best performance.First of all you have to measure why you want to have the database split then we can go with further investigation.You can see my youtube channel I have a video talking about partitioned tableshttp://www.youtube.com/watch?v=HDx8XCoAw3wWed, 25 Aug 2010 03:34:05 GMTMarcos Leandro Rosahttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspx[quote][b]ningaraju.n (8/25/2010)[/b][hr]Thanks stewart,We are using the scheduleuserid in most of the cases in where clause and sometimes questionId along with that.and currently we have only one file group .please suggest.[/quote]based on you reply, I would recommend> creating at least one new filegroup (with associated physical file);> build the partition function using the column most frequently used in range-based searches (scheduleuserid), using, for example, the ranges as shown in my first post on this subject;> create the partition scheme to link the partition function to the new filegroup;> build the table on the new partition scheme;> create the clustered index on the partitioned column, also on the new partition scheme;> Refer to books online with regard to the rules governing indexes on partitioned tables: [url]http://msdn.microsoft.com/en-US/library/ms188706(v=SQL.90).aspx[/url]or Kimberly Tripp's article: [url]http://msdn.microsoft.com/en-us/library/ms345146(SQL.90).aspx[/url]Wed, 25 Aug 2010 00:45:42 GMTStewart "Arturius" Campbellhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxThanks stewart,We are using the scheduleuserid in most of the cases in where clause and sometimes questionId along with that.and currently we have only one file group .please suggest.Wed, 25 Aug 2010 00:21:28 GMTningaraju.nhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxQuestion to consider:> which column is likely to be used in range-based searches (usually the column with the clustered index)?This would be the column to effect the partition on, e.g. using range left for customer for values 1000, 2000, 3000 etc> how many filegroups and physical files would be required (to split the data accross numerous drives, if applicable)?Tue, 24 Aug 2010 05:05:42 GMTStewart "Arturius" Campbellhttp://www.sqlservercentral.com/Forums/Topic971642-145-1.aspxHi All, I have a table which has around 50 million records and its increasing exponentially, and it stores the information of user and his attended question details for eg:sample data looks like this ScheduleUserId,QuestionId,MaxScore,UserScore,IsCorrect,HintUsed2345 32 2 2 1 02345 33 2 0 0 0etcwe thought of doing the partition please provide some good approaches for this .Thu, 19 Aug 2010 00:54:06 GMTningaraju.n