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  • How to count unique values from table in mysql?

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    Sometimes we have the requirement to count how many unique values are in the table. We can do this by using "Distinct" and count().

    SELECT COUNT(DISTINCT column_name) FROM table_name;
    

    Example: Suppose you have a table user from which you want to count how many unique emails are in the table. You can do this by using the below command

    select count(distinct email_id) from user;
    

    in the above command Distinct will provide unique email ids and then will count them.

    Hope this will help you :)

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