Which predicate most closely mirrors a semi-join?

Problem Statement

Explanation

A semi-join answers whether a matching row exists on the right, but it does not return right-hand columns and does not multiply left rows. Implement with EXISTS or IN when you only need to filter the left side by presence on the right.

Code Solution

SolutionRead Only

SELECT c.* FROM customers c
WHERE EXISTS (
  SELECT 1 FROM orders o WHERE o.customer_id = c.id
);

Practice Sets

This question appears in the following practice sets:

CTEs, Subqueries & Advanced Joins

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Which predicate most closely mirrors a semi-join?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Which predicate most closely mirrors a semi-join?

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