aggregate-functions

Following this post: POST ABOUT CONCAT My problem is that i have many rows CONCAT into one row. For example if i have 10 rows with string around 50 chars, my query will show me only 6-7 of that rows or something like that. I searech in stack and google and i found that i can change CONCAT max length by command: SET group_concat_max_len := @@max_allowed_packet . What i am doing wrong? EDIT: When i SHOW VARIABLES LIKE 'group_concat_max_len' it's shows me 1024. Mysql version 5.0.96-log. Tables type: MyISAM. Looks like it dont have any limits, i try to select simple varchar with 2000 chars, and it

I'm working with some data that is currently stored in 1 minute intervals that looks like this: CREATE TABLE #MinuteData ( [Id] INT , [MinuteBar] DATETIME , [Open] NUMERIC(12, 6) , [High] NUMERIC(12, 6) , [Low] NUMERIC(12, 6) , [Close] NUMERIC(12, 6) ); INSERT INTO #MinuteData ( [Id], [MinuteBar], [Open], [High], [Low], [Close] ) VALUES ( 1, '2015-01-01 17:00:00', 1.557870, 1.557880, 1.557870, 1.557880 ), ( 2, '2015-01-01 17:01:00', 1.557900, 1.557900, 1.557880, 1.557880 ), ( 3, '2015-01-01 17:02:00', 1.557960, 1.558070, 1.557960, 1.558040 ), ( 4, '2015-01-01 17:03:00', 1.558080, 1.558100, 1

suppose I have this table id | cash 1 200 2 301 3 101 4 700 and I want to return the first row in which the sum of all the previous cash is greater than a certain value: So for instance, if I want to return the first row in which the sum of all the previous cash is greater than 500, is should return to row 3 How do I do this using mysql statement? using WHERE SUM(cash) > 500 doesn't work You can only use aggregates for comparison in the HAVING clause: GROUP BY ... HAVING SUM(cash) > 500 The HAVING clause requires you to define a GROUP BY clause. To get the first row where the sum of all the

Please I want to select data from a table, where a specific field has the min value, I've tried this : SELECT * FROM pieces where min(price) I'm not good with MySQL, please any help ? Thanks this will give you result that has the minimum price on all records. SELECT * FROM pieces WHERE price = ( SELECT MIN(price) FROM pieces ) SQLFiddle Demo This is how I would do it (assuming I understand the question) SELECT * FROM pieces ORDER BY price ASC LIMIT 1 If you are trying to select multiple rows where each of them may have the same price (which is the minimum) then @JohnWoo's answer should suffice