SELECT * FROM表WHERE col至少有3个相同

Question

我需要一个MySQL查询，它返回一个表的结果，其中特定列的元素在至少'n'个记录中是相同的。

示例伪代码：

SELECT * FROM Table WHERE col has at least 3 identical

Answer 1

select * from table where col in (
    select col from table group by col having count(*) > 3
)

Answer 2

SELECT col, COUNT(*) AS total FROM tbl GROUP BY col HAVING total >= 3

Answer 3

select * from table a
inner join (
    select col,n=count(*)
      from table
     group by col
    having count(*) >= 3 ) as b     
on (a.col=b.col)

Answer 4

mysql允许您编写如下内容：

select *
from table
group by col
having count(*) >= 3

其他dbmss强制您明确指定所有列并对其使用MAX或MIN

Answer 5

SELECT DISTINCT * FROM TableName t WHERE 2 < (SELECT COUNT(*) FROM TableName p WHERE p.col = t.col)