Which pattern correctly returns rows in A that have no match in B?

Problem Statement

Explanation

A LEFT JOIN followed by WHERE B.id IS NULL forms an anti-join. It keeps left rows that did not match any right row. NOT EXISTS is an equivalent and often clearer way to write the same logic.

Code Solution

SolutionRead Only

SELECT a.id
FROM A a
LEFT JOIN B b ON b.id = a.id
WHERE b.id IS NULL;

Practice Sets

This question appears in the following practice sets:

Joins Masterclass

Next Question

Master Interviews
Anywhere, Anytime

Which pattern correctly returns rows in A that have no match in B?

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

Which pattern correctly returns rows in A that have no match in B?

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