Solved

How do I do a multiple UPDATE ... WHERE ... ?

Posted on 2007-11-20
3
183 Views
Last Modified: 2010-04-21
Question:

Is there a more efficient way to write this simple UPDATE query:

update Table1
set Field1 = 'String1' where Field2 = 'Value1';
update Table1
set Field1 = 'String2' where Field2 = 'Value2';
...
update Table1
set Field1 = 'StringN' where Field2 = 'ValueN'; ?

0
Comment
Question by:masbe
[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
3 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 50 total points
ID: 20320785
not "simple", but single statement is possible:

update Table1
set Field1 = case field2
  when 'Value1' then 'String1' 
  when 'Value2' then 'String2' 
  ...
  when 'ValueN' then 'StringN' 
end
where Field2 IN ( 'Value1', 'Value2', ... 'ValueN' )
;

Open in new window

0
 
LVL 23

Expert Comment

by:Ashish Patel
ID: 20320793
You have to write multiple statements for this. No other way round.
or if the where clause and value to be set have something common then do like this
update Table1
set Field1 = Replace(Field2, 'Value', 'String')
0
 

Author Closing Comment

by:masbe
ID: 31410144
Worked fine. Thanks.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
query question 12 37
Compare a column in results by values left of decimal 2 29
Union & Crosstab qrys 101! 6 68
How to add an Index to a date/time field? 15 38
Confronted with some SQL you don't know can be a daunting task. It can be even more daunting if that SQL carries some of the old secret codes used in the Ye Olde query syntax, such as: (+)     as used in Oracle;     *=     =*    as used in Sybase …
Composite queries are used to retrieve the results from joining multiple queries after applying any filters. UNION, INTERSECT, MINUS, and UNION ALL are some of the operators used to get certain desired results.​

742 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