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I have a table with two columns - artist, release_id
What query can I run to show duplicate records?
e.g. my table is
ArtistX : 45677 ArtistY : 378798 ArtistX : 45677 ArtistZ : 123456 ArtistY : 888888 ArtistX : 2312 ArtistY: 378798 The query should show
ArtistX : 45677 ArtistX : 45677 ArtistY : 378798 ArtistY : 378798 
890
Find Duplicate Row values in One ColumnSELECT col, COUNT(col) FROM table_name GROUP BY col HAVING COUNT(col) > 1; In the above query, we do a GROUP BY for the column for which we want to check duplicates. We also use a COUNT() and HAVING clause to get the row counts for each group.
To find the duplicate Names in the table, we have to follow these steps: Defining the criteria: At first, you need to define the criteria for finding the duplicate Names. You might want to search in a single column or more than that. Write the query: Then simply write the query to find the duplicate Names.
You can use a grouping across the columns of interest to work out if there are duplicates.
SELECT artist, release_id, count(*) no_of_records FROM table GROUP BY artist, release_id HAVING count(*) > 1; If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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