Sql 为此数据选择Distinct
有人能帮我吗?我想用此数据选择distinct:Sql 为此数据选择Distinct,sql,Sql,有人能帮我吗?我想用此数据选择distinct: Code Name Description Date 17-0001 A 01-AOE 02/01/2017 17-0001 A 02-AOE 02/02/2017 17-0001 B 01-AOE 02/01/2017 17-0001 B 02-AOE 02/03/2017 etc ... 我希望选择distinct,结果如下:
Code Name Description Date
17-0001 A 01-AOE 02/01/2017
17-0001 A 02-AOE 02/02/2017
17-0001 B 01-AOE 02/01/2017
17-0001 B 02-AOE 02/03/2017
etc ...
我希望选择distinct,结果如下:
Code Name Date
17-0001 A 02/01/2017 ---> Only The First Date And Not Show The Fld Desc
17-0001 B 02/01/2017
etc ...
谢谢你回答我的问题 如果我理解正确,您需要在日期列中添加
分组依据和min
select code, name, min(date)
from t
group by code, name;
如果我理解正确,您需要在日期列中添加一个分组依据
和min
select code, name, min(date)
from t
group by code, name;
看看这个
select code, name, min(date) as date
from tablename
group by code, name;
看看这个
select code, name, min(date) as date
from tablename
group by code, name;