Extraction not working as expected

[srinivas_gowda]

Hello team,

I am trying to extract the below highlighted fields. However when I use the expression this is working right on one type of event but picking a different(underlined) field from other event. Please let me know what wrong I am doing here.

(?:[^,]+,){19}\"(?<instance>[^,]+)\",.*

Below is the event which is getting extracted as expected.

50271232,00004102,00000000,1600,"20210901225500","20210901225500",4,-1,-1,"SYSTEM","","psd217",46769357,"MS932","KAVS0260-I \x83W\x83\x87\x83u\x83l\x83b\x83g(AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/\x92l\x8ED\x94\xAD\x8Ds/04_\x92l\x8ED\x8Ew\x8E\xA6\x83f\x81[\x83^\x98A\x8Cg_\x8CߑO1TAX:@5V689)\x82\xF0\x8AJ\x8En\x82\xB5\x82܂\xB7","Information","jp1admin","/APP/ABC/AJS2","JOBNET","Server2:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/\x92l\x8ED\x94\xAD\x8Ds/04_\x92l\x8ED\x8Ew\x8E\xA6\x83f\x81[\x83^\x98A\x8Cg_\x8CߑO1TAX","JOBNET","AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/\x92l\x8ED\x94\xAD\x8Ds/04_\x92l\x8ED\x8Ew\x8E\xA6\x83f\x81[\x83^\x98A\x8Cg_\x8CߑO1TAX","AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x

Below highlighted is what I need to extract but the underlined is getting extracted.
50271228,00004105,00000000,3088,"20210901225446","20210901225446",4,-1,-1,"SYSTEM","","psd240",316413752,"MS932","KAVS0263-I \x83W\x83\x87\x83u(AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/MCS/\x8AĎ\x8B/09_\x92\x8D\x95\xB6\x91\x97\x90M\x96\xA2\x8DX\x90V\x8D\x80\x96ڃ`\x83F\x83b\x83N/HULFT\x91\x97\x90M\x8C㎞\x8Aԑҋ@1MIN:@50R6189)\x82\xF0\x8AJ\x8En\x82\xB5\x82܂\xB7(host: PSD511, JOBID: 0)","Information","jp1admin","/App/ABC/AJS2","JOB","Server1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/MCS/\x8AĎ\x8B/09_\x92\x8D\x95\xB6\x91\x97\x90M\x96\xA2\x8DX\x90V\x8D\x80\x96ڃ`\x83F\x83b\x83N/HULFT\x91\x97\x90M\x8C㎞\x8Aԑҋ@1MIN","JOBNET","AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/MCS/\x8AĎ\x8B/09_\x92\x8D\x95\xB6\x91\x97\x90M\x96\xA2\x8DX\x90V\x8D\x80\x96ڃ`\x83F\x83b\x83N","AJSROOT1:/\x90V\x8A_\x96{\x94ԏ\x88\x97\x9D/MCS/\x8AĎ\x8B/09_\x92\x8D\x95\xB6\x91\x97\x90M\x96\xA2\x8DX\x90V\x8D\x80\x96ڃ`\x83F\x83b\x83N/HULFT\

[PickleRick]

Your regex won't work for events which have commas in the values since every comma is treated as a field separator.

You could try delimiter-based parsing. But if you really want a regex, you have to account for exceptions.

You can try, for example, something like:

(?:([^",]+|"[^"]*"),){19}"(?<instance>[^"]+)",.*

Of course it's a raw regex, if you want to put it as a string into a command, you have to escape the quotation marks.