If you work with data, you probably use SQL queries to retrieve, manipulate, and analyze information from databases. SQL queries can be simple or complex, depending on your needs and goals.

However, scalar functions have some drawbacks: they are executed for each row of the result set, they prevent parallelism, and they can cause hidden conversions or errors. Table-valued functions ...

When grouping by one or more attributes, each attribute in the select clause should either be included in the group by clause, or aggregated as part of an aggregate function. The having clause is ...

Due to the nature of my permissions, I cannot create Views or new Tables – thus ... BR><BR>Is there a way to use aggregate functions and only group on specific keys, rather than every column?

The error “Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause” occurs in SQL when a SELECT ...