group-concat

I got this problem with Group_Concat and a where filter. In my table i got module names which are linked to a client. I want to search clients by module name, but in the group concat i still want to see all modules that are owned by the client. currently it will display all clients with those modules, but it will only display that specific module. I can't figure out how to make them both work together. Any suggestions on how to get my expected result?? These are some basic tables and the query i tried along with results i get and the result i really wanted Client +--------------------+ | id |

I want to list all users with their corropsonding user class. Here are simplified versions of my tables CREATE TABLE users ( user_id INT NOT NULL AUTO_INCREMENT, user_class VARCHAR(100), PRIMARY KEY (user_id) ); INSERT INTO users VALUES (1, '1'), (2, '2'), (3, '1,2'); CREATE TABLE classes ( class_id INT NOT NULL AUTO_INCREMENT, class_name VARCHAR(100), PRIMARY KEY (class_id) ); INSERT INTO classes VALUES (1, 'Class 1'), (2, 'Class 2'); And this is the query statement I am trying to use but is only returning the first matching user class and not a concatenated list as hoped. SELECT user_id,

I have a database with a table for publications, each of which can have multiple authors that are stored in a different table. I'd like to query the database into giving me a list of publication titles in one column, and the combined authors for that publication in the second. SELECT p.`id`, p.`title`, a.`fullname` from `publications` p LEFT JOIN `authors` a on a.`publication_id` = p.`id`; This of course gives me multiple times the publication title for as many authors. id title fullname -- ----- -------- 1 Beneath the Skin Sean French 1 Beneath the Skin Nicci Gerrard 2 The Talisman Stephen

mysql> select * from CT; | CID | MID | REPORT_QUERY | | 1 | 1 | select * from emp; | | 2 | 2 | select * from student; | 2 rows in set (0.00 sec) I want to execute queries in REPORT_QUERY column. DELIMITER // CREATE PROCEDURE TRYct() BEGIN SET @str=(SELECT GROUP_CONCAT(REPORT_QUERY SEPARATOR ' ') FROM CT); PREPARE q from @str; EXECUTE q; END // DELIMITER ; i use this code but it works if there is only one query in my table. if there is two query than it gives an error. ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for

I searched a lot, but didn't find a proper solution to my problem. What do I want to do? I have 2 tables in MySQL: - Country - Currency (I join them together via CountryCurrency --> due to many to many relationship) See this for a working example: http://sqlfiddle.com/#!2/317d3/8/0 I want to link both tables together using a join, but I want to show just one row per country (some countries have multiple currencies, so that was the first problem). I found the group_concat function: SELECT country.Name, country.ISOCode_2, group_concat(currency.name) AS currency FROM country INNER JOIN

I have a large table with data that is not unique but needs to be. This table is a result of multiple union selects so is not an actual table. I cannot make it an actual table for other reasons. All of the UNION'd tables have an email column which will eventually be unique. The resulting records look like this: 1 ozzy@test.com Ozzy 2 test@test.com Tony 3 test@yahoo.com Steve 4 tiny@test.com 13 tony@gmail.com Tony 14 test@test.com Ozzy 15 test@yahoo.com Dave 16 tiny@test.com Tim As you can see, some emails appear more then once with different names or non existent names. When I add a GROUP BY

I have a MySQL query in which I want to include a list of ID's from another table. On the website, people are able to add certain items, and people can then add those items to their favourites. I basically want to get the list of ID's of people who have favourited that item (this is a bit simplified, but this is what it boils down to). Basically, I do something like this: SELECT *, GROUP_CONCAT((SELECT userid FROM favourites WHERE itemid = items.id) SEPARATOR ',') AS idlist FROM items WHERE id = $someid This way, I would be able to show who favourited some item, by splitting the idlist later