Which set operator keeps duplicates?

Problem Statement

Explanation

UNION performs a distinct across rows, removing duplicates. UNION ALL appends results and preserves duplicates. Use UNION ALL when you know inputs are disjoint or you want to keep frequency.

Code Solution

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SELECT name FROM customers
UNION ALL
SELECT name FROM employees;

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Which set operator keeps duplicates?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

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

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

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More from SQL & Databases

Master Interviews Anywhere, Anytime

Which set operator keeps duplicates?

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