Comments on: MySQL – Can You Concatenate Strings From a Column Into a Single Row?

By: prakash

prakash — Sat, 30 Jul 2011 11:36:30 +0000

how to delede ta which inserted with gruop_concat query in php.

thanks in advance.

By: SD (Aspherical)

SD (Aspherical) — Sat, 03 Jan 2009 21:53:02 +0000

Just wanted to say thanks for posting this question and leaving all the feedback up! This helped me significantly.

Each photograph on my site has several descriptive attributes stored in a separate table (e.g. City, State) and linked by the photograph’s unique ID. While adding the ability to search to my site, it was no problem to search for Atlanta OR Georgia, but Atlanta AND Georgia wouldn’t work because only the first attribute field was being returned. Using GROUP_CONCAT to stuff all the attributes in the column into a field worked like a charm.

By: rudy

rudy — Mon, 08 Dec 2008 20:47:59 +0000

“I never expected such a huge response.”

heh

you would not have gotten such a huge response if you had moderated the first few replies that came in

when i posted (mine was #30) there were ~no~ previous comments visible

you gots to get more on da ball dan dat, adam

By: Adam

Adam — Mon, 08 Dec 2008 17:55:03 +0000

Thanks to everyone for the awesome feedback. I never expected such a huge response. You all definitely answered my question.

By: Brian Papantonio

Brian Papantonio — Sun, 07 Dec 2008 01:07:31 +0000

GROUP_CONCAT

By: S. Nedregaard

S. Nedregaard — Sat, 06 Dec 2008 19:47:22 +0000

Look up GROUP_CONCAT (and remember to set group_concat_max_len if you expect the result to exceed 512 characters.

http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html

By: Roland Volkmann

Roland Volkmann — Sat, 06 Dec 2008 18:49:27 +0000

Please have a look on function GROUP_CONCAT() as described in section 11.12.1 of MySQL 5.1 Reference Manual.

By: Stephen S. Musoke

Stephen S. Musoke — Sat, 06 Dec 2008 17:56:06 +0000

You can use the GROUP_CONCAT() function

SELECT WA.Web_Account_ID, GROUP_CONCAT(WAG.Web_Account_Group_Name_ID) /*Default is comma delimited but you can use different separators even return distinct values*/
FROM tblWebAccounts WA, tblWebAccountGroup WAG
WHERE WA.Web_Account_ID = WAG.Web_Account_ID /*Inner Join*/
GROUP BY WA.Web_Account_ID
ORDER BY Web_Account_ID

By: Toby

Toby — Sat, 06 Dec 2008 15:28:35 +0000

GROUP_CONCAT()

By: rudy

rudy — Sat, 06 Dec 2008 14:52:02 +0000

use the GROUP_CONCAT function

;o)

By: Dennis Birkholz

Dennis Birkholz — Sat, 06 Dec 2008 10:38:04 +0000

Hi Adam,
have you ever heard of GROUP_CONCAT?

SELECT Web_Account_ID,
GROUP_CONCAT(Web_Account_Group_Name_ID)
FROM tblWebAccounts AS WA
LEFT JOIN tblWebAccountGroup AS WAG
ON WAG.Web_Account_ID = WA.Web_Account_ID
GROUP BY WA.Web_Account_ID
ORDER BY WA.Web_Account_ID, WAG.Web_Account_Group_Name_ID

Greets,
Dennis

By: Mark Daems

Mark Daems — Sat, 06 Dec 2008 09:45:47 +0000

Is there something wrong with the mysql group_concat function? http://dev.mysql.com/doc/refman/5.1/en/group-by-functions.html#function_group-concat

Mark

By: Antony Curtis

Antony Curtis — Sat, 06 Dec 2008 06:18:08 +0000

Check this link…
http://dev.mysql.com/doc/refman/4.1/en/group-by-functions.html#function_group-concat

By: Ryan Lowe

Ryan Lowe — Sat, 06 Dec 2008 06:02:46 +0000

Are you looking for something like the following?

SELECT
Web_Account_ID,
GROUP_CONCAT(
DISTINCT Web_Account_Group_Name_ID
ORDER BY Web_Account_Group_Name_ID
SEPARATOR ‘,’) AS GroupNameConcat
FROM tblWebAccounts WA
GROUP BY Web_Account_ID
ORDER BY Web_Account_ID;

More info on GROUP_CONCAT is available at http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat

By: Shlomi Noach

Shlomi Noach — Sat, 06 Dec 2008 05:04:38 +0000

Hi,

Use GROUP_CONCAT(). Please see my two posts on the subject:
http://code.openark.org/blog/?p=246
and
http://code.openark.org/blog/?p=126

Regards,
Shlomi