`diff_summaries`

Change summaries (model)

One row per model-written summary of the change between two printings of a bill. All columns are stored as VARCHAR.

Coverage. Empty by owner decision 34: written only by a language model during bill-family runs, which no scheduled run enables, so no row is produced. (measured 2026-10-03)

Parquet file: diff_summaries.parquet
MCP query_sql support: Configured; requires an available artifact.
Publication status: Not established by this schema page or its measurement date.
Row count: Not stated here; the MCP describe_table reply gives the live count under publication.

Column	Type	Description
`bill_id`	`VARCHAR`	The bill both printings belong to.
`from_version_code`	`VARCHAR`	The earlier printing's version code.
`from_source`	`VARCHAR`	Which acquisition path supplied the earlier printing.
`to_version_code`	`VARCHAR`	The later printing's version code.
`to_source`	`VARCHAR`	Which acquisition path supplied the later printing.
`headline`	`VARCHAR`	One sentence naming the most important change.
`key_changes_json`	`VARCHAR`	The bullet points describing the most significant changes, as a JSON array in the model's order. The prompt asks for at most five and nothing enforces it -- unlike bill_summaries.top_provisions_json, whose cap is checked before the row is stored -- because the ported answer schema states no maximum either, so a longer list is the model's answer and not a defect to hide.
`sections_added_json`	`VARCHAR`	Section headings that were added, as a JSON array.
`sections_removed_json`	`VARCHAR`	Section headings that were removed, as a JSON array.
`dollar_changes_json`	`VARCHAR`	Notable dollar-amount changes in prose, as a JSON array.
`model`	`VARCHAR`	The model id the call was made against.
`prompt_version`	`VARCHAR`	The prompt version this summary was produced under.
`content_hash`	`VARCHAR`	Digest of the diff text the summary was written from, spelled sha256: plus the hex digest.
`input_tokens`	`VARCHAR`	Input tokens the provider reported.
`output_tokens`	`VARCHAR`	Output tokens the provider reported.
`requested_at`	`VARCHAR`	When the call was made.
`completed_at`	`VARCHAR`	When the answer came back; the merge prefers the larger value.