TraceQL: Fix lookups .attr != nil with special columns #4864
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What this PR does:
Improves attribute existence checks using
{ .attr != nil }
. Queries involving well-known attributes and attributes stored in dedicated columns currently don't check generic attribute columns for attributes with the same name but a different type.For example, the query
{ span.http.status_code != nil }
will not match spans wherehttp.status_code
exists as a string (e.g."200"
).Which issue(s) this PR fixes:
Fixes #2968
Checklist
CHANGELOG.md
updated - the order of entries should be[CHANGE]
,[FEATURE]
,[ENHANCEMENT]
,[BUGFIX]