mysql - PHP Get the most popular item in table -

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lets table looks like:

username userid a1       1 a1       1 a1       1 b2       2 c2       3 d2       3

the popular username:a1

how find popular item in table?

select username, count(*) frequency your_table group username order frequency desc limit 1

would yield single row:

username | frequency ---------+---------- a1         3

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