SQL

mysql query where in

SELECT * FROM `tableName` WHERE `ColumnName` IN (1,2,3);

mysql query where in select

SELECT *
FROM some_table
WHERE relevant_field IN
(
    SELECT * FROM
    (
        SELECT relevant_field
        FROM some_table
        GROUP BY relevant_field
        HAVING COUNT(*) > 1
    ) AS subquery
)

select where mysql

SELECT 
    select_list
FROM
    table_name
WHERE
    search_condition;