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PROFESSIONAL-CLOUD-DEVELOPER · Question #44
PROFESSIONAL-CLOUD-DEVELOPER Question #44: Real Exam Question with Answer & Explanation
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Implementing data persistence
Question
You have two tables in an ANSI-SQL compliant database with identical columns that you need to quickly combine into a single table, removing duplicate rows from the result set. What should you do?
Options
- AUse the JOIN operator in SQL to combine the tables.
- BUse nested WITH statements to combine the tables.
- CUse the UNION operator in SQL to combine the tables.
- DUse the UNION ALL operator in SQL to combine the tables.
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Topics
#SQL#UNION operator#Data Manipulation#Deduplication