Hi guys I have a problem and a possible solution, that i think is relative easy to develop (i didn't tested but i think the source is easy to change) i have some queries like: SELECT date, (SELECT value FROM some_table WHERE date=a.date ORDER BY date ASC LIMIT 1) AS first, (SELECT value FROM some_table WHERE date=a.date ORDER BY date DESC LIMIT 1) AS last FROM some_table AS a GROUP BY date i want to "convert" the complex sub query, to a agregate function, and i thinking about group concat: from mysql docs: GROUP_CONCAT([DISTINCT] *expr* [,*expr* ...] [ORDER BY {*unsigned_integer* | *col_name* | *expr*} [ASC | DESC] [,*col_name* ...]] [SEPARATOR *str_val*]) we have ORDER BY if we could include a "LIMIT" clause, i could rewrite this query to: SELECT date, GROUP_CONCAT(value ORDER BY date ASC LIMIT 1) AS first, GROUP_CONCAT(value ORDER BY date DESC LIMIT 1) AS last FROM some_table AS a GROUP BY date i know that i could have stats tables / materialized views (with flexview, i already tested :) ), but i want something more "easy to use" and not "very fast", just a "feature" to solve small problems it's a nice idea? does anyone have this "problem" and solve with other solutions? -- Roberto Spadim