Whats the difference between the UNION and UNION ALL set operators?

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What’s the difference between the UNION and UNION ALL set operators?

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Oracle 12c SQL

ISBN: 978-1305251038

3rd edition

Authors: Joan Casteel

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Question Posted: Dec 21, 2018 10:37 AM

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Whats the difference between the UNION and UNION ALL set operators?

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Oracle 12c SQL

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