来自三个字段的UniqueID并检索数据

Question

I have one table, 10 fields(f1-f10). Combining f1-f2-f3 gives me a new field. I would like to retrieve all data from table, for distinct values of this new field(f1-f2-f3). Running sub-queries, but getting all records. Please suggest.

vik

Answer 1

按这三个字段分组 ，然后为其余字段选择“ 最小”，“最大”，“平均”，“第一 ”或“ 最后 ”。