检索记录履行使用GROUP BY条件

Question

我想只能选择其中计数大于1（即重复的），现在从几千条记录我主要是看到1S与一些2S和3S在这里和那里

SELECT count( * ) AS `Number` , GI . *
FROM `GeneralInformation` AS GI
GROUP BY `FirstName` , `Surname` 

我怎么能这样做呢？

Answer 1

SELECT count( * ) AS `Number` , GI . *
FROM `GeneralInformation` AS GI
GROUP BY `FirstName` , `Surname` 
HAVING count(*)>1

Answer 2

使用HAVING子句

SELECT count( * ) AS `Number` , GI . *
FROM `GeneralInformation` AS GI
GROUP BY `FirstName` , `Surname` 
HAVING count( * ) > 1