Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

How to sort varchar field.

Posted on 2012-03-14
8
Medium Priority
?
317 Views
Last Modified: 2012-03-15
I have a table a with field priority containing n records, and has the values as 'High','Low','Medium'.
in random manner the records are entered no indexing.
I can t add new field in table.
How do i sort the data so that High comes first, then Medium  and then Low.
0
Comment
Question by:searchsanjaysharma
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
  • +2
8 Comments
 
LVL 25

Expert Comment

by:jogos
ID: 37721786
order by
case when priority = 'high' then 1
when priority = 'medium' then 2
when priority = 'low' then 3
else end
0
 
LVL 11

Expert Comment

by:SANDY_SK
ID: 37721808
Use the CASE statement like this....
select Description, CASE(Priority) WHEN 'High' then 3 WHEN 'Low' then 1 WHEN 'Medium' then 2 END as numericPriority from priorities order by numericPriority

Open in new window

0
 
LVL 7

Expert Comment

by:micropc1
ID: 37721820
The best solution would be to normalize you data by creating a priority table with the following structure...

create table priority
   ( priority  varchar(10)
   , orderIndex int
   , CONSTRAINT priorityPK PRIMARY KEY (priority))

then join on that table and sort by the orderIndex.

But a quick and dirty solution would be to add a computed column...

ALTER TABLE tableName
ADD priorityIndex AS
   CASE priority
   WHEN 'High' THEN 1
   WHEN 'Medium' THEN 2
   WHEN 'Low' THEN 3
   END

Then order by priorityIndex
0
Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

 
LVL 40

Expert Comment

by:lcohan
ID: 37721825
And make sure you have an index on the priority column plus at least the record key
column(s) in a INCLUDE of the same index.
0
 

Author Comment

by:searchsanjaysharma
ID: 37721834
i want display as High,Medium,Low  and as Low Priority
0
 
LVL 11

Accepted Solution

by:
SANDY_SK earned 1500 total points
ID: 37721840
then

select Description, Priority, CASE(Priority) WHEN 'High' then 3 WHEN 'Low' then 1 WHEN 'Medium' then 2 END as numericPriority from priorities order by numericPriority
0
 
LVL 25

Expert Comment

by:jogos
ID: 37721960
<<i want display as High,Medium,Low>>
That is how the value is in your table ... that's why I only changed it in the ORDER BY

<<  and as Low Priority>>
this part I don't get
0
 

Author Closing Comment

by:searchsanjaysharma
ID: 37726167
ok
0

Featured Post

Veeam Task Manager for Hyper-V

Task Manager for Hyper-V provides critical information that allows you to monitor Hyper-V performance by displaying real-time views of CPU and memory at the individual VM-level, so you can quickly identify which VMs are using host resources.

Question has a verified solution.

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

SQL Server engine let you use a Windows account or a SQL Server account to connect to a SQL Server instance. This can be configured immediatly during the SQL Server installation or after in the Server Authentication section in the Server properties …
In this article I will describe the Copy Database Wizard method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
In this video, Percona Solution Engineer Dimitri Vanoverbeke discusses why you want to use at least three nodes in a database cluster. To discuss how Percona Consulting can help with your design and architecture needs for your database and infras…

670 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