Question

当我运行此查询时，我得到多个具有相同地址的家庭成员，我只想要每个家庭/地址一行。

SELECT distinct last_name, first_name, address_1, city, state_code, zip_code
from guest
WHERE address_1 IS NOT NULL
GROUP by last_name, first_name, address_1, city, state_code, zip_code

Answer 1

如果您希望每个系列/地址占一行，只需从查询中删除第一个名称，如下所示：

SELECT last_name, address_1, city, state_code, zip_code
from guest
WHERE address_1 IS NOT NULL
GROUP by last_name, address_1, city, state_code, zip_code;

我也放弃了DISTINCT，因为你有GROUP BY，所以没有必要。

希望有所帮助。

无法摆脱重复的行

1 个答案: