Nov 14, 2008 · The HAVING clause was added to SQL because the WHERE keyword could not be used with aggregate functions. Check out this w3schools link for more information. Syntax: …

1. We can use aggregate function with HAVING clause not by WHERE clause e.g. min,max,avg. 2. WHERE clause eliminates the record tuple by tuple HAVING clause eliminates entire group …

Jul 20, 2012 · Beware of someone asking about a sub-string of a word (for example, someone asks about 'de' as a name word) - none of the queries at the moment ensures that the user …

Then, the HAVING clause keeps only duplicate groups, which are groups that have more than one occurrence. 2. Using a CTE: To return the entire row for each duplicate row, join the result …

SELECT * FROM Student WHERE YEAR(birthday)>1993; /*this will work as birthday is in database.if we use having in place of where too this will work*/ SELECT …

Mar 9, 2011 · HAVING is not what you need - it is only useful if you want to filter by MAX. For example, if you do not want to get all MAXids but only those larger than 2, you can use …

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 …

I'm having trouble with a MySQL query. If the label is "5" then I only want records where there is more than 10 of them for the current day, but any number of rows for other labels. What is the …

A cláusula Having em conjunto com Group by é muito útil para eliminar duplicatas condicionalmente. Por exemplo, se cada cliente de sua tabela tiver muitos registros e cada …

Nov 4, 2013 · This solution also uses the 'having' clause that you included in your original question. SELECT e.first_name,e.salary AS "sal" FROM Employees e, Employees e2 GROUP …