What i need is commented above, a way to get the ROW_NUMBER but also to Group By in the first place. So i need the sum of all T1-prices grouped by T2.ID in the relation-table and in the outer query …

That is, the last record in each group should be returned. At present, this is the query that I use:

13 SQL Server 2005 and later allow you to create your own custom aggregate functions, including for things like concatenation- see the sample at the bottom of the linked article.

0 My solution uses one select to get the minimum record_date for each id using a group by clause and also avoids the inability to select the key_id and other_cols columns, followed by a second select that …

For mysql, sql_mode not including ONLY_FULL_GROUP_BY in the bitmask, the Optimizer has a chance to deliver better results with a varied / different use of the alias in the HAVING clause.

How can I specify the group period? I'm using MS SQL 2008. I've tried this, both with % 10 and / 10.

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 …

This will group by the full datetime, including hours and minutes. I wish to make the group by, only by the date YYYY/MM/DD not by the YYYY/MM/DD/HH/mm. How to do this?

The SQL GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results by one or more columns. In more simple words GROUP BY statement is used …

Oct 3, 2008 · GROUP BY has a very specific meaning that is distinct (heh) from the DISTINCT function. GROUP BY causes the query results to be grouped using the chosen expression, aggregate …