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Extract a field using Regex

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Hi,

I have following output from a log file.


(5/1/13 - 1:36:05.01 PM)    Event   LOAD 1 Setup
(5/1/13 - 1:36:08.01 PM)    Event   LOAD 2 Setup
(5/1/13 - 1:37:07.37 PM)    Event   LOAD 1 Process
(5/1/13 - 1:37:17.37 PM)    Event   LOAD 3 Process
(5/1/13 - 1:38:07.39 PM)    Event   LOAD 1 Complete
(5/1/13 - 1:38:15.01 PM)    Event   LOAD 3 Setup
(5/1/13 - 1:38:17.39 PM)    Event   LOAD 2 Complete
(5/1/13 - 1:39:07.42 PM)    Event   READ 1 Setup
(5/1/13 - 1:39:17.37 PM)    Event   LOAD 3 Process
(5/1/13 - 1:39:27.39 PM)    Event   LOAD 3 Complete
(5/1/13 - 1:39:37.42 PM)    Event   READ 2 Setup
(5/1/13 - 1:39:57.42 PM)    Event   READ 3 Setup
(5/1/13 - 1:40:07.45 PM)    Info    READ 1 Process
(5/1/13 - 1:41:07.47 PM)    Error   READ 1 Complete
(5/1/13 - 1:41:17.45 PM)    Info    READ 2 Process
(5/1/13 - 1:41:27.45 PM)    Info    READ 3 Process
(5/1/13 - 1:41:57.47 PM)    Error   READ 2 Complete
(5/1/13 - 1:42:07.47 PM)    Error   READ 3 Complete

I need to extract a field "WorkID", so I used following REGEX

 rex field=_raw "LOAD (?<workid>d+)|READ (?<workid>d+)"
and got error message "Regex: two named subpatterns have the same name"

If I change the WorkID field to WorkID1 and WorkID2, it works but not sure how to consolidate these 2 fields.

Later I will be using "Transaction" to get following output:

Start Time                    End Time                       WorkId 
(5/1/13 - 1:36:05.01 PM)    (5/1/13 - 1:41:07.47 PM)                1
(5/1/13 - 1:36:08.01 PM)    (5/1/13 - 1:41:57.47 PM)                2
(5/1/13 - 1:38:15.01 PM)    (5/1/13 - 1:42:07.47 PM)                3

What would be best ( practice) implementation for this issue?

Thanks!!!!


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