SQL Query to Find Duplicate Records in a Table in SQL Server

Question

Ravi Vishwakarma · Answer

To find 
duplicate records in your Employee table based on the
EmployeeID and Email columns, you can use a query with the
GROUP BY and HAVING clauses.and 
Here is an example query to identify duplicates:
SELECT 
    EmployeeID, 
    Email, 
    COUNT(*) AS DuplicateCount
FROM 
    Employee
GROUP BY 
    EmployeeID, 
    Email
HAVING 
    COUNT(*) > 1;
Explanation:
SELECT EmployeeID, Email, COUNT(*) AS DuplicateCount: This part of the query selects the
EmployeeID, Email, and a count of how many times each combination appears.FROM Employee: Specifies the table to query.GROUP BY EmployeeID, Email: Groups the results by EmployeeID and
Email to aggregate the counts.HAVING COUNT(*) > 1: Filters the results to include only groups with a count greater than 1, indicating duplicates.
This query will return a list of EmployeeID and Email combinations with more than one occurrence in the
Employee table, along with the count of those duplicates.
Read moreand 
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SQL Query to Find Duplicate Records in a Table in SQL Server

Anubhav Kumar

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