Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

SQL Question pertaining to JOINS

Posted on 2009-06-27
1
Medium Priority
?
186 Views
Last Modified: 2012-05-07
Is there a maximum amount of Joins allowed per SELECT statement? I have one that will contain numerous Joins, would I be best served to break them all into temp tables and re-join them? What would be my best way to handle this?
0
Comment
Question by:Jeff S
1 Comment
 
LVL 23

Accepted Solution

by:
Racim BOUDJAKDJI earned 2000 total points
ID: 24727675

<<s there a maximum amount of Joins allowed per SELECT statement?>>
http://www.experts-exchange.com/Microsoft/Development/MS-SQL-Server/Q_21855910.html

<<I have one that will contain numerous Joins, would I be best served to break them all into temp tables and re-join them? >>
It really depends on the structure and the type of joins.  Sometime it is better to use temp tables to avoid blocking sometimes it's not.  Hard to say without knowing both your schema and statement.

<<What would be my best way to handle this?>>
I would suggest you start without using any temp table then test yo see if you have blockings.  If you detect specific blockings or slow performance then you can consider replacing joins by temp tables.  most of the time, if the indexing is well done, temm tables are unecessary but sometime there are no other way.

HTH
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I'm trying, I really am. But I've seen so many wrong approaches involving date(time) boundaries I despair about my inability to explain it. I've seen quite a few recently that define a non-leap year as 364 days, or 366 days and the list goes on. …
In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.

783 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question