SQL Performance Questions and Answers

Recent IT Questions

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SSRS - SQL runs in 1 minute but Reporting Services tuns for 30 minutes

I have a report whose dataset query that takes approximately 1 minute to run in SQL Management Server. That same query in a Reporting Services report takes aver 30 minutes to run. And it is inconsistent in its behavior since sometimes it will never finish running and error out. When it does run...

View Answer   |  Sep 14 2009  4:15 PM GMT
SSRS, SQL, SQL performance
asked by Cvillavicencio

  35 pts.

Select into vs Insert into in SQL Server

Hi experts, What is better between Select into vs Insert into in SQL Server when it comes to performance? thx

View Answer   |  Aug 20 2009  4:36 PM GMT
SQL Server 2000, SQL INSERT, SQL performance
asked by DBM

  10 pts.

slow update Query(Primary Key)

dear Friends when i run below query its take more than 10 minutes and still running.... update auditdata set TATCallType='12',TATCallUnit='1' from auditdata auditdata inner join Auditdata_sms_12 a_sns on auditdata.ID = a_sns.id auditdata is my original table in above table ID is primary key ...

View Answer   |  Jul 14 2009  4:22 PM GMT
SQL, SQL Query, SQL performance
asked by Mxaxyogesh2002

  30 pts.

SQL2005 SP3

Hi, I recently applied Service Pack 3 to SQL2005 64 bit and my server performance has been very slow since. The statistics have been updated on my databases, but that has not made a difference. Has anyone else experienced such behaviour post SP3 install? Thanks, Lakshmi

Answer Question   |  Jun 4 2009  3:46 PM GMT
SQL 2005 Service pack 3, SQL 2005, SQL 2005 SP3
asked by Lmurthy

  5 pts.

understanding and detecting sql performance situation with abnormal 400 shutdown

Need help in understanding and detecting situation with logical files built for sql rpgle performance and abnormal shutdown. Our system went down due to ups failure. All of a sudden the rpgle sql program is a resource hog because it is not selecting the lf that was built specifically for...

View Answer   |  Jun 3 2009  2:32 PM GMT
RPGLE, SQL, DB2
asked by Modiyooch

  370 pts.

SQL login client not admin

it is payday and on the client side of our DB there are some login errors, where in SQL do you go to check points of failure?

View Answer   |  Apr 23 2009  5:39 PM GMT
SQL, SQL performance, SQL Troubleshooting
asked by Deliverance

  40 pts.

PK allows null values in progress DB does this reduce performance of sql statements?

Hello Primary Key allows null values in progress DataBase, does this reduce performance of sql statements??

View Answer   |  Feb 27 2009  1:50 PM GMT
SQL statements, NULL values in PK, SQL performance
asked by Blom

  5 pts.

SQL Restore takes 6-10 minutes to come up in Enterprise Manager

SQL Restore takes 6-10 minutes to come up in Enterprise Manager. We have a customer with hundreds of sites, and all their servers do the same thing. We had to roll back after an upgrade and we find that when just selecting "Restore Database" it will seem like Enterprise Manager is hung, but...

View Answer   |  Feb 17 2009  2:52 PM GMT
MySQL Restore, SQL Restore, SQL Enterprise Manager
asked by Ulukinatme

  10 pts.

sqldumper

is sqldumper caused by low memory in computer if not what is it caused by and how do i get rid of it

View Answer   |  Feb 3 2009  7:11 PM GMT
sql dumper, SQL, SQL Server performance
asked by Shortfuse45

  5 pts.

Query performance and tuning

Hi, I wanted know as to what I can do to my query so that it improves in performance.RIght now it it taking 3-4 hrs because of the large no of records in the DB.If i remove the group by and order by clause for the same no of records it is fast but when it does sorting it hangs.But I need to do the...

View Answer   |  Dec 21 2008  9:34 AM GMT
SQL, SQL performance, SQL statements
asked by Mingley

  5 pts.

Slow performance for a SQL query

I have a SQL query I am running, but it is experiencing significant slowdown. The main table - has over 1 million records and a unique key of cusID. It has a one to many relationship with the other two tables mentioned. The query code is as follows: Select customer.cusID,customer.VisitDate,...

View Answer   |  Oct 23 2008  6:22 PM GMT
SQL performance, SQL Server performance, SQL Query
asked by SQL Server Ask the Experts

  2445 pts.

Alternative to using a cursor in SQL

What is the best alternative to using a cursor in SQL if I am suffering from performance issues?

View Answer   |  Jul 30 2008  7:22 PM GMT
SQL, SQL performance
asked by SQL Server Ask the Experts

  2445 pts.

Including a primary key in a nonclustered index in SQL Server 2005

The query optimizer for SQL Server 2005 is suggesting that we include a primary key as part of a nonclustered index. Is it OK to include that to increase SQL performance?

View Answer   |  Jul 2 2008  5:36 PM GMT
SQL Server 2005, Index, Primary keys
asked by SQL Server Ask the Experts

  2445 pts.

Why is the query using the index even though the perecentage of unique values is 52%?

I have a table with no primary key and a non-clustered composite index of two columns. When I look at the number of distinct values (selectivity ratio), the table has a ratio of 52% unique values. I thought an index should be at least 90% unique in order for it to be used. Yet when I run the...

View Answer   |  Mar 3 2008  5:09 AM GMT
SQL, Indexes, SQL performance
asked by Abbi

  20 pts.

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