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Editorial Team
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Asked: 2026-05-16T22:58:00+00:00

How do find duplicate rows? If last_name is the duplicate field, I want to

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How do find duplicate rows? If last_name is the duplicate field, I want to have to display

last_name frst_name frst_name1 frst_name2 ....

Any database will do, prefer oracle.

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1 Answer

  1. Editorial Team

    Assuming your server has GROUP_CONCAT because you didn’t mention which one you’re using:

    SELECT GROUP_CONCAT(first_name SEPARATOR ' ')
FROM table
GROUP BY last_name
HAVING COUNT(first_name) > 1
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