Solved

Add +39 to beginning of mysql field only if field not beginning with +

Posted on 2014-04-02
9
276 Views
Last Modified: 2014-04-02
Hi all...

I have a lot of contacts in my database but some of them haven't international prefix.

I'd need an update query able to see if the number begins with "+" character.
If so, skip it, otherwise update its field preponing "+39".

Thanks for the help!
0
Comment
Question by:ltpitt
  • 4
  • 3
  • 2
9 Comments
 
LVL 32

Expert Comment

by:awking00
ID: 39972677
update table
set field = '+39' + field
where substring(field,1,1) <> '+';
0
 
LVL 32

Expert Comment

by:awking00
ID: 39972690
Sorry, didn't see MySQL -
update table
set field = concat('+39',field)
where substring(field,1,1) <> 0
0
 
LVL 1

Author Comment

by:ltpitt
ID: 39972755
Excuse me if I forgot to mention this...

Will this query skip empty fields?

I'd like it to do so...

Just now I was thinking that if it doesn't find the + it could also mean that the field is empy.

Sorry for being a little slow :)
0
 
LVL 34

Expert Comment

by:Dan Craciun
ID: 39972757
@awking00: you forgot the +

WHERE SUBSTRING(field,1,1) <> '+'
0
What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

 
LVL 1

Author Comment

by:ltpitt
ID: 39972810
I tried:

update contatti
set cellulare = concat('+39',cellulare)
WHERE SUBSTRING(cellulare,1,1) <> '+'

but it addedd +39 to empty fields
0
 
LVL 34

Accepted Solution

by:
Dan Craciun earned 500 total points
ID: 39972822
Of course. We only tested if it has a + at the beginning.

To test for empty fields use
UPDATE contatti
SET cellulare = CONCAT('+39',cellulare)
WHERE SUBSTRING(cellulare,1,1) <> '+' AND cellulare <>''
0
 
LVL 1

Author Closing Comment

by:ltpitt
ID: 39972825
Hail to the sql king :)
0
 
LVL 34

Expert Comment

by:Dan Craciun
ID: 39972828
Glad I could help, but this is awking00's solution.

I just improved it slightly. Please re-grade accordingly.

Thank you.
0
 
LVL 1

Author Comment

by:ltpitt
ID: 39972884
Oh sorry I thought you were the same user...

I'll try to fix this...
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
SELECT * FROM table WHERE keyword…  (3 SQL queries needed) 10 84
the whoisactive update 12 39
MySQL  on Tomcat 8 30
Updating a table from a temp table 4 29
PL/SQL can be a very powerful tool for working directly with database tables. Being able to loop will allow you to perform more complex operations, but can be a little tricky to write correctly. This article will provide examples of basic loops alon…
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.​
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

867 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

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now