2
votes
1answer
109 views

NEWSEQUENTIALID() resets sequence on server restart

MSDN learns me that NEWSEQUENTIALID(): Creates a GUID that is greater than any GUID previously generated by this function on a specified computer since Windows was started. After restarting ...
4
votes
2answers
126 views

Can a single SQL Server instance issue the same SYSDATETIME twice?

I am contemplating using a datetime2(7) as a clustered index. If I were to always populate that column using SYSDATETIME is it possible for the same instance to issue the same value twice (assuming ...
0
votes
0answers
106 views

Howto improve performance for these queries, why is my indexed view making it worse for most of them and how can I change that?

for the record, this is a rewrite of the following question (you do not have to read that because I include all important data here) Howto improve performance for queries against table without primary ...
4
votes
0answers
300 views

Howto improve performance for queries against table without primary key without changing the query or the table directly? [closed]

UPDATE: I included some updated information in this question, because there was no way of progressing here given the previous constraints. Scroll to the bold-faced paragraphs to see my updates; I ...
16
votes
2answers
1k views

Does the order of columns in a PK index matter?

I have a few very large tables with the same basic strucure. Each one has a RowNumber (bigint) and DataDate (date) column. Data is loaded using SQLBulkImport every night, and no "new" data is ever ...
5
votes
2answers
710 views

Disk Space Considerations for Rebuilding a large Clustered Primary Key Index

We have a table in our database with over 200 million rows and a Clustered Primary Key Index which is over 100GB. The Primary Key is only so large because many more millions of rows have been archived ...
1
vote
4answers
2k views

Speed up large clustered index creation?

I have a large table, the row count of the table is more than 3 billion, the data space for this table is about 120 GB. And Intel Xeon CPU E5645 @2.4GHz(2 processors), 24 CPUs, 64G memory, 64bit ...
1
vote
2answers
235 views

Clustered vs Nonclustered Index

My database currently has a primary Key/Clustered index on the ID column for each table. However, the application that connects to the database is always looking at views defined as: SELECT * FROM ...
2
votes
1answer
142 views

Updating column in underlying table causes massive transaction log growth

I have an underlying table ~14k records and an indexed view that contains ~11 million records. When updating a column in the small underlying table this seems to cause a massive transaction log entry ...
5
votes
2answers
741 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 ...
3
votes
0answers
440 views

SQL Server 2008 R2 clustered index issue

Last week, we came up with a strange issue on Clustered index. We are using SQL Server 2008 R2 in our organization. A stored procedure is written for our application which contains a cursor in it. ...
3
votes
1answer
924 views

Clustered Index Update on Nonclustered Columns

Using: SQL Server 2008 R2 I am currently stepping through a query execution plan, and have come across an instance of a clustered index update on a table. The issue here is that the columns that are ...