pr0gramm-usercomments

This dataset contains SQLite exports of pr0gramm item metadata and comments.

Initial Crawl

The initial full snapshot is:

• pr0gramm.sqlite3

Initial full-crawl coverage:

• Highest items.item_id: 6986879 (created_at: 2026-04-17 19:17:36 UTC)
• Highest comments.item_id: 6986879

Weekly Delta DBs

Incremental updates are published as additional SQLite files in the dataset root.

Filename pattern:

• pr0_delta_YYYY-Www_ids_<upper>_<lower>.sqlite3

Meaning:

• <upper> = highest crawled item id in that delta
• <lower> = lowest crawled item id in that delta
• IDs in a delta are crawled descending from <upper> to <lower>

Delta crawl policy:

• Weekly incremental crawl
• Only IDs newer than the previous last_known_id
• 14-day maturity delay before crawling (to capture most comments)
• No revisit of older IDs in weekly mode

Delta schema normalization:

• Delta DBs are normalized to match the vacuumed base schema exactly.
• Only tables: items, comments
• No crawler-internal tables (for example crawl_state, item_detail_failures)

Merge Strategy

To merge a delta into the base DB:

1. Attach delta DB to a local copy of pr0gramm.sqlite3
2. Upsert/insert by primary keys:
   • items.item_id
   • comments.comment_id

Because IDs are monotonic and deltas are non-overlapping ranges, merge operations are straightforward and deterministic.

Tables

The vacuumed schema is:

• comments
• items

comments schema

• comment_id INTEGER PRIMARY KEY
• item_id INTEGER NOT NULL
• parent_comment_id INTEGER
• comment_time INTEGER
• score INTEGER
• upvotes INTEGER
• downvotes INTEGER
• user_name TEXT
• user_id INTEGER
• user_profile_url TEXT
• body TEXT
• raw_json TEXT NOT NULL

items schema

• item_id INTEGER PRIMARY KEY
• promoted INTEGER
• flags INTEGER
• created_at INTEGER
• user_name TEXT
• source_feed TEXT NOT NULL
• raw_json TEXT NOT NULL

Notes

• Timestamps are stored as Unix seconds.
• raw_json contains API payload snapshots and may include fields not normalized into separate columns.