>>whoish+(OP)
Shameless plug: made a searcher for this (and any other HN's) thread - it runs locally in-browser by loading all top-level comments to in-browser SQLite, lets you run regular SQL and also full-text search (FTS4) to filter results any way needed. Then you can save/load db as a regular SQLite file.
https://mstrahov.github.io/hnsql/?32306920 Hope it's useful, thank you!