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How to find duplicate row in a table - MSSQL

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How to find duplicate row in a table - MSSQL

· Database Zone
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Read why times series is the fastest growing database category.

The below given query will fetch the duplicate rows in MSSQL with number of occurance of each row.

SELECT     <all column names - comma seperated>, COUNT(<name of any one column>) AS Occurance_Count
FROM <table name>
GROUP BY <all column names - comma seperated>
HAVING (COUNT(<name of any one column>) > 1)

 

Note: The data in '<>' should be replaced with relevent data. E.g. '<all column names - comma seperated>' should be replaced with 'a,b,c' where a, b and c are the names of the columns in the table.

Learn how to get 20x more performance than Elastic by moving to a Time Series database.

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