group-concat

I'm looking for the LINQ equivalent to the Sybase's LIST() or MySQL's group_concat() It'll convert: User Hobby -------------- Bob Football Bob Golf Bob Tennis Sue Sleeping Sue Drinking To: User Hobby -------------- Bob Football, Golf, Tennis Sue Sleeping, Drinking That's the GroupBy operator. Are you using LINQ to Objects? Here's an example: using System; using System.Collections.Generic; using System.Linq; public class Test { static void Main() { var users = new[] { new { User="Bob", Hobby="Football" }, new { User="Bob", Hobby="Golf" }, new { User="Bob", Hobby="Tennis" }, new { User="Sue",

Possible Duplicate: how to retrieve two columns data in A,B format in Oracle Suppose I have a table like this: NAME GROUP_NAME name1 groupA name2 groupB name5 groupC name4 groupA name3 groupC I'd like to have a result like this: GROUP_NAME NAMES groupA name1,name4 groupB name2 groupC name3,name5 If there were only one column in the table, I could concatenate the records by doing the following, but with grouping in the context, I really don't have much idea. Concatatenating one column table: SELECT names FROM (SELECT SYS_CONNECT_BY_PATH(names,' ') names, level FROM name_table START WITH names =

I need something similar to these 2 SO questions, but using Informix SQL syntax. Concatenate several fields into one with SQL SQL Help: Select statement Concatenate a One to Many relationship My data coming in looks like this: id codes 63592 PELL 58640 SUBL 58640 USBL 73571 PELL 73571 USBL 73571 SUBL I want to see it come back like this: id codes 63592 PELL 58640 SUBL, USBL 73571 PELL, USBL, SUBL See also group_concat() in Informix . I believe that the answer you need is a user-defined aggregate, similar to this one: CREATE FUNCTION gc_init(dummy VARCHAR(255)) RETURNING LVARCHAR; RETURN '';

I am doing SELECT GROUP_CONCAT(categories SEPARATOR ' ') FROM table . Sample data below: categories ---------- test1 test2 test3 test4 test1 test3 test1 test3 However, I am getting test1 test2 test3 test4 test1 test3 back and I would like to get test1 test2 test3 test4 back. Any ideas? Many thanks! Naktibalda GROUP_CONCAT has DISTINCT attribute: SELECT GROUP_CONCAT(DISTINCT categories ORDER BY categories ASC SEPARATOR ' ') FROM table Using DISTINCT will work SELECT GROUP_CONCAT(DISTINCT(categories) SEPARATOR ' ') FROM table REf:- this Other answers to this question do not return what the OP