How do i remove unwanted fields from my already loaded data

[saniyask]

Channel	Week	Date	Start Time	End Time	Description
CAT1	21	5/23/2015	2:00:00	2:11:34	A
CAT1	21	5/23/2015	2:00:00	2:25:39	A
CAT1	21	5/23/2015	2:14:49	2:19:58	A
CAT1	21	5/23/2015	2:23:08	2:25:39	A
CAT1	21	5/23/2015	2:25:39	2:39:58	B
CAT1	21	5/23/2015	2:25:39	2:55:54	B
CAT1	21	5/23/2015	2:43:43	2:47:03	B
CAT1	21	5/23/2015	2:51:02	2:55:54	B
CAT1	21	5/23/2015	2:57:54	3:12:08	C
CAT1	21	5/23/2015	2:57:54	3:27:49	C
CAT1	21	5/23/2015	3:15:53	3:19:23	C
CAT1	21	5/23/2015	3:23:03	3:27:49	C
CAT1	21	5/23/2015	3:27:49	3:34:35	D
CAT1	21	5/23/2015	3:27:49	3:57:39	D
CAT1	21	5/23/2015	3:38:20	3:44:49	D
CAT1	21	5/23/2015	3:48:29	3:57:39	D
CAT1	21	5/23/2015	3:59:39	4:05:58	E
CAT1	21	5/23/2015	3:59:39	4:28:53	E
CAT1	21	5/23/2015	4:09:23	4:15:12	E
CAT1	21	5/23/2015	4:18:32	4:28:53	E

I have a above data where i want only second field of a particular 'description'. how will i be able to fetch only that part of data..??

[Gysbert_Wassenaar]

Create a new table and drop the original:

New:

LOAD * WHERE Counter =2;

LOAD

     Channel,

     Week,

     Date,

     [Start Time],

     [End Time],

     Description,

     autonumber([End Time], Description) as Counter

FROM

     Old

Order By

     Channel,

     Week,

     Description,

     Date,     

     [Start Time],

     [End Time]

;

Drop Table Old;