How do I get the timechart results for a summary index query?

[pavanae]

I have a query which uses the summary index and some lookup tables with eval conditions and ends with...

| chart count by field_a,  field_b

...which is working fine and gives me the statistics. But, when I tried the same query by replacing the "chart count by" with "timechart count by", it gives me an error as follows and doesn't work:

error:- Error in 'timechart' command: The argument 'field_b' is invalid.

Could anyone explain why the query with timechart doesn't work but the query with chart did?

[richgalloway]

@pavanae Is your problem resolved? If so, please accept one of the answers.

[sir_lamneth]

The main thing is timechart doesn't let you do include multiple fields in its by clause. Commands like stats and chart do. You can also fake it by concatenating your two fields into one, and using that in timechart:

 | eval marker=field_a+field_b | timechart count by marker

[briancronrath]

This is what I usually do, with the only change I concatenate using the period "." symbol to eliminate possible weirdness with it trying to add numeric values together. | eval marker=field_a.field_b | timechart count by marker

[HiroshiSatoh]

Since the X axis is _time and the Y axis is field_a, field_b is invalid.
How's this?

(your search)|bin span=XX _time| stats count by _time,field_a, field_b

[pavanae]

It doesn't give me an error now but I see no results. Looks like _time not working though I see _time on all the summary indexing events

[HiroshiSatoh]

What is the state of not functioning?
What is set in the _time of the search result?