SQL GROUP BY CASE statement with aggregate function
SQL GROUP BY CASE statement with aggregate function Asked 16 years, 4 months ago Modified 2 years, 5 months ago Viewed 345k times
What is the difference between PARTITION BY and GROUP BY
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 …
Why do we need GROUP BY with AGGREGATE FUNCTIONS?
Dec 22, 2012 · 4 If you don't specify GROUP BY, aggregate functions operate over all the records selected. In that case, it doesn't make sense to also select a specific column like EmployeeID.
Why are aggregate functions not allowed in where clause
34 Why can't we use aggregate function in where clause Aggregate functions work on sets of data. A WHERE clause doesn't have access to entire set, but only to the row that it is currently …
sql - GROUP BY without aggregate function - Stack Overflow
Nov 19, 2013 · SQL requires that if a column is in the SELECT clause and is not used within an aggregate function, it must be included in the GROUP BY clause. Since resource.rId is …
sql - TSQL Pivot without aggregate function - Stack Overflow
sql parameterised cte query The answer to that question involves a situation where pivot without aggregation is needed so an example of doing it is part of the solution.
How to avoid error "aggregate functions are not allowed in WHERE"
Jan 8, 2014 · This sql code throws an aggregate functions are not allowed in WHERE SELECT o.ID , count (p.CAT) FROM Orders o INNER JOIN Products p ON o.P_ID = p.P_ID WHERE …
Aggregate function in SQL WHERE-Clause - Stack Overflow
May 13, 2014 · In a test at university there was a question; is it possible to use an aggregate function in the SQL WHERE clause. I always thought this isn't possible and I also can't find …
Aggregate SQL Function to grab only the first from each group
Apr 21, 2017 · 2 First and Last do not exist in Sql Server 2005 or 2008, but in Sql Server 2012 there is a First_Value, Last_Value function. I tried to implement the aggregate First and Last …
sql - Is it possible to use Aggregate function in a Select statment ...
32 So far I have written Aggregate function followed by Group By clause to find the values based on SUM, AVG and other Aggregate functions. I have a bit confusion in the Group By clause. …