The GROUP BY clause groups the rows, but it does not necessarily sort the results in any particular order. To change the order, use the ORDER BY clause, which follows the GROUP BY clause. The columns

Jul 15, 2009 · I am just confused with the execution sequence of a SQL query when we use GROUP BY and HAVING with a WHERE clause. Which one gets executed first? What is the sequence?

Apr 5, 2012 · Ordering contents of "groups" was a bug in previous versions of MySQL. As of SQL standarts, in this case ORDER BY must influence only results of GROUP BY, not data before grouping.

Apr 1, 2025 · MySQL prior to version 5 did not allow aggregate functions in ORDER BY clauses. You can get around this limit with the deprecated syntax: SELECT COUNT(id), `Tag` from `images-tags` GROUP BY `Tag` ORDER BY 1 DESC LIMIT 20 1, since it's the first column you want to group on.

Aug 13, 2010 · Since you do a GROUP BY, you need to run some aggregate function over non-grouping columns. MAX will select the date of last published article from each category and order categories accordingly.

A simple solution is to wrap the query into a subselect with the ORDER statement first and applying the GROUP BY later: SELECT * FROM ( SELECT `timestamp`, `fromEmail`, `subject` FROM `incomingEmails` ORDER BY `timestamp` DESC ) AS tmp_table GROUP BY LOWER(`fromEmail`) This is similar to using the join but looks much nicer.

Jul 18, 2011 · (When you have a GROUP BY), the same logic applies for all fields you put in the SELECT list, the HAVING clause and the ORDER BY clause. So, it also applies for ORDER BY UpdateDate.

Aug 21, 2017 · I need to group by an UniqueIdentifier column and then sort the group by a DateTime Column, the table also contains the XML column. Table schema: StudentMark: CREATE TABLE [dbo].[StudentMark] ( ...

Sep 27, 2010 · I'd like to select the first row of each set of rows grouped with a GROUP BY. Specifically, if I've got a purchases table that looks like this: SELECT * FROM purchases; My Output: id customer tota...

Jun 17, 2010 · No, the order doesn't matter for the GROUP BY clause. MySQL and SQLite are the only databases I'm aware of that allow you to select columns which are omitted from the group by (non-standard, not portable) but the order doesn't matter there either.