How can I filter the field only from certain events?

[bagaeva]

Hello! How can I filter the field only from certain events? There are a lot of events with the same fields, I need to filter these fields when indexing, only in some events.

[khaynes_splunk]

The answer here is NOT to change the field extractions of the original, raw data. It sounds like you want to treat the value of u_cr differently for some values of event than those from other values of event. In that case, you could just change the value of u_cr for those events dynamically at search time to get what you need. For example, if you were summing u_cr but wanted to exclude the value of u_cr from that summation for events where the event field equals "vil", you could just set u_cr to zero for those events right in the search; for example:

... | eval u_cr=if(event="vil", 0, u_cr) | stats sum(u_cr)

I hope that helps.

[koshyk]

please provide sample raw data in your post, and how you want the output so we can put the correct search/filter/regex

[bagaeva]

two events:

1508735029.189 d = a enm_val = 25440 event = vil gnr = w gnr_l = 91 serv = en_1 sn = o u_cl = 19 u_cr = 56 u_geo = RU u_id = 160370 u_mn = 2423432 u_pvp = 6433109 u_sd = 4101827 u_st = 1418129 u_wd = 2652063 u_wl = 91 vil = st vil_l = 16 win = 1624

1508735662.348 d = a event = cup fI = "2017-10-22 17: 26: 37.000" serv = ru_1 sn = u_cl = 1 u_cr = 300 u_geo = RU u_id = 1256228 u_mn = 595 u_pvp = 0 u_sd = 600 u_st = 700 u_wd = 760 u_wl = 1

The field u_cr = 56 must be removed only from the first (event = vil). In the second (event = cup), it should not change.

After deleting the first event looks like:

1508735029.189 d = a enm_val = 25440 event = vil gnr = w gnr_l = 91 serv = en_1 sn = o u_cl = 19 u_geo = RU u_id = 160370 u_mn = 2423432 u_pvp = 6433109 u_sd = 4101827 u_st = 1418129 u_wd = 2652063 u_wl = 91 vil = st vil_l = 16 win = 1624