Nov 13, 2008 · What is the difference between HAVING and WHERE in an SQL SELECT statement?

Why does everyone explain HAVING through the aggregates? It's confusing and not a full answer. HAVING just runs later, on the results set. We don't need aggregates to need HAVING. Sometimes …

Jul 20, 2012 · I am trying to fetch records in MySQL using a simple used submitted field. More precisely, the user inputs a name (firstname or lastname or fullname) and the server should return matched …

Feb 8, 2025 · 3 Using HAVING in a SQL query which does not have GROUP BY is a language extension particular to MySQL, and is not part of the ANSI standard. The main benefit from using …

Nov 4, 2009 · Is it possible to use a WHERE clause after a HAVING clause? The first thing that comes to my mind is sub queries, but I'm not sure. P.S. If the answer is affirmative, could you give some …

I found one question answered with the ROW_NUMBER() function in the where clause. When I tried one query, I was getting the following error: Msg 4108 Level 15 State 1 Line 3 Windowed functions can...

Dec 27, 2012 · In MS SQL, the only place (I'm aware of) that you can reference aliases is in the ORDER BY clause. The ability to reference aliases in other parts of the query is a feature that many other db …

May 2, 2013 · 104 The semantics of Having To better understand having, you need to see it from a theoretical point of view. A group by is a query that takes a table and summarizes it into another …

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?

SQL does allow you to filter on the results of a GROUP BY -- it's called the HAVING clause. If you want to filter on something that could be determined prior to the grouping (i.e. everyone with FirstName = …