In standard SQL, which SELECT list is valid with GROUP BY?

Problem Statement

Explanation

Every non-aggregated column in the SELECT list must be functionally dependent on the GROUP BY columns, and practically must be listed there. If a column is not grouped, aggregate it or remove it from the projection.

Code Solution

SolutionRead Only

SELECT dept_id, COUNT(*)
FROM employees
GROUP BY dept_id;

Practice Sets

This question appears in the following practice sets:

Filtering, Grouping & Aggregations

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In standard SQL, which SELECT list is valid with GROUP BY?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews Anywhere, Anytime

In standard SQL, which SELECT list is valid with GROUP BY?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime