Query to Find Duplicate value in SQL
Employee table
SELECT *FROM employees where first_name='Peter';
How to find Duplicate value in SQL
SELECT first_name,count(first_name) from employees group by first_name having count(first_name)>1;
Output
Employee table
SELECT *FROM employees where first_name='Peter';
How to find Duplicate value in SQL
SELECT first_name,count(first_name) from employees group by first_name having count(first_name)>1;
Output
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