Solved

help with group_concat

Posted on 2011-02-15
4
868 Views
Last Modified: 2012-05-11
Hi

Please can you advise the correct syntax as neither of the queries below work. I would like to perform a regex on the results of the group_concat function

select group_concat(col) `temp` from table where temp REGEX 'test' group by id;
unknown column temp in where clause

select group_concat(col) `temp` from table where group_concat(col) REGEX 'test' group by id;
invalid use of group function

thanks
0
Comment
Question by:andieje
[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
4 Comments
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 250 total points
ID: 34899453
please try:
select group_concat(col) `temp` from table group by id having group_concat(col) REGEX 'test' ;

Open in new window

0
 

Author Comment

by:andieje
ID: 34899944
I get a syntax error for any query with

having colnname REGEX 'exp';

or

having group_concat(colname) REGEX 'exp';

after the group by clause
0
 
LVL 41

Assisted Solution

by:Sharath
Sharath earned 250 total points
ID: 34900037
SELECT   Group_concat(col) TEMP 
FROM     table 
GROUP BY id 
HAVING   Group_concat(col) REGEXP 'test';

Open in new window

or
SELECT * 
FROM   (SELECT   Group_concat(col) TEMP 
        FROM     table 
        GROUP BY id) AS t1 
WHERE  TEMP REGEXP 'test';

Open in new window

0
 

Author Closing Comment

by:andieje
ID: 34900237
I'd missed off the 'P'
0

Featured Post

Back Up Your Microsoft Windows Server®

Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Excel - SQL export question 3 53
How do uses indexes to maximize MySQL Searches 14 67
Complex MySQL Query 2 39
converting integer data type to time data type in sql 4 48
Does the idea of dealing with bits scare or confuse you? Does it seem like a waste of time in an age where we all have terabytes of storage? If so, you're missing out on one of the core tools in every professional programmer's toolbox. Learn how to …
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

733 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