0
votes
1answer
154 views

How to get accurate row counts in partitions in a table

I am trying to fetch row counts in each partition for a table. But I got confused as in sys.partitions row counts is on basis of indexes. So how can I get exact row count for partitions in a table.
10
votes
1answer
182 views

How can I interpret the results of these DMVs to help me evaluate our partitioning strategy?

Version: SQL Server 2008 R2 Enterprise Edtn. (10.50.4000) In attempt to evaluate our partitioning strategy, I wrote this query to get the access methods against indexes on partitions (in the broadest ...
6
votes
1answer
479 views

How accurate is the sys.partition.rows column?

The system view sys.partitions has a column "rows" that is the total number of rows in a given partition. For a table that is not partitioned (or only has one partition depending on how you look at ...
3
votes
1answer
2k views

Large table and poor performance - what to do next?

We have a Windows 2008 R2 / SQL Server 2008 R2 (Standard) server that is used to host a single database. The database itself mainly consists of a single large table containing both live and historical ...
3
votes
1answer
952 views

How to take partitions or filegroups out of service

I'm an experienced SQL Server DBA but new to partitioning, and I have a couple of questions. Using SQL Server 2008 R2 Enterprise Edition. I've inherited a large customer metrics database that grows ...
1
vote
0answers
17 views

How to take partitions or filegroups out of service [migration] [duplicate]

I'm an experienced SQL Server DBA but new to partitioning, and a had a couple of questions. Using SQL Server 2008 R2 Enterprise Edition. I've inherited a large customer metrics database that grows by ...
5
votes
2answers
566 views

Recreate Indexes on 1 billion record table

I have a table with over 1 billion records and it has 6 indexes (including Clustered index (ID)). I need to partition this table on a new Clustered index with date column. I have just enough space ...
2
votes
1answer
177 views

How do I know if my database partitioning is done well? [closed]

I have a sneaking suspicion that the guy who wrote the partitioning functions at my place of work did a fairly poor job. For certain queries (maybe 20% of them) we see incredible performance boosts ...
2
votes
1answer
114 views

Unique Non Clustered Column in Partitioned table

We have partitioned one of our SQL Server tables on a Clustered Index datetime column, we have a Primary key Non-clustered index column with Identity data type and this column is setup as a ...
5
votes
2answers
775 views

Large Fact table and partitioning key dilemma

I have fairly large fact table (2 billion records, approx 120 GB). This table is not partitioned and the queries are very slow to respond. I am planning to partition the table and indexes. The table ...
5
votes
2answers
778 views

Get a record's current partition

In SQL Server 2008 R2, how would I determine what partition a record currently lives in?
1
vote
0answers
747 views

Pros/Cons of Using Table/Index Partitioning in SQL Server [closed]

We have a number of tables that were partitioned primarily to reduce problems when purging data (via sliding-window partitioning / truncate). I have found a number of caveats that come with ...
5
votes
2answers
410 views

Partition Function vs. Clustered Index

We have a table that is clustered on identity/datetime2. It is partitioned on the same datetime2. Are there any reasons to cluster on datetime2/identity instead? I understand the reasoning behind ...
1
vote
1answer
89 views

Where does it make sense to store Indexes for partitioned tables?

Prior to table partitioning, all the indexes were stored on a separate drive, per this question. Now that I partitioned a couple of tables, SSMS is offering to store indexes in the partition scheme. ...
3
votes
1answer
395 views

Why am I getting Table scan on a partitioned table query?

I have table Inventory_Break partitioned on IR_ID (int). I also created a non-clustered index for IR_ID on the table. When I run the following: SELECT * FROM dbo.INVENTORY_BREAK WHERE IR_ID ...
12
votes
3answers
2k views

Does the partition key also have to be part of the primary key?

I am partitioning a table based on a column that is not a primary key? I've read some conflicting information today on whether the partition column must be a part of the primary key. My gut says no, ...
1
vote
1answer
579 views

How many files should I create for one filegroup and 9 weekly partitions?

I have 9 weekly partitions on one filegroup. How many files do I need to create? There are 3 tables containing 46 million, 16 million and 10 million rows.
4
votes
1answer
359 views

SQL Server Partitioning - Parent / Child tables

I'm currently investigating implementing partitioning for a fairly hefty (800GB and growing) SQL Server database. All of the data in the tables is relatable to a date/time, however this date/time is ...
2
votes
2answers
906 views

Best practices for creating partition schemes and functions

I'm implementing partitioning for the first time in SQL Server 2008 R2. I've several large tables that I am partitioning. My main question is: Should I use the same Partition Scheme and Function for ...
0
votes
1answer
1k views

Reindexing Partitioned Table Indexes

Historic Reporting Server running SQL 2008 R2. I'm trying to tweak the fill factor. I have a job that records the fragmentation when the jobs runs in the early hours. For every table that had high ...
8
votes
2answers
3k views

SQL Server 2008 - Partitioning and Clustered Indexes

So let me preface by saying I do not have total control over my db design, so a lot of the aspects of the current system cannot be changed for the purposes of this scenario. Comments about how we ...