Hadoop Hive: How to convert multiple rows into comma separated values?

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Nov 14, 2018 in Big Data Hadoop by slayer
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You can use the aggregator function collect_set to do this. Example:

SELECT Col1, collect_set(Col2)
FROM your_table
GROUP BY Col1;
answered Nov 14, 2018 by Omkar
• 65,820 points

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