如何在sql的特定列中选择所有列而不重复任何列

Question

我需要选择在特定列中具有不同值的任何记录的所有列，所以如果我有

Firts|Last|State|
Jacck|Redy|NJ
Jacck|Redy|NJ
Jacck|Redy|NY
Jacck|Redy|NY
Jacck|Redy|OH
Jacck|Redy|OH

我想得到

 Jacck|Redy|NJ
 Jacck|Redy|NY
 Jacck|Redy|OH

Answer 1

 select first, last, state from table1 GROUP BY first, last, state

OR

 select distinct first, last,state from table1