Find MySQL Duplicate Data in a Field

To check for duplicate data in a specific field, you can use the following SQL statement:

SELECT field_name, COUNT(*) AS count
FROM table_name
GROUP BY field_name
HAVING count > 1;

In this case, field_name is the name of the field to be queried, and table_name is the name of the table to be queried. This SQL statement will count the duplicate data in the field_name field and only return the data with a duplicate count greater than 1.

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