cwolff/testpile

GitTables-NG and SchemaPile-NG

Tables and database schemas from permissively licensed public GitHub repositories, snapshot of 2026-10-10.

config	records
gittables-ng	36,048 tables	25,250,154 rows stored (up to 10 000 per table)
schemapile-ng	3,789 schemas	19,712 tables

From 840 repositories.

from datasets import load_dataset
tables = load_dataset("cwolff/testpile", "gittables-ng", split="full")
schemas = load_dataset("cwolff/testpile", "schemapile-ng", split="full")

How it was built

• Repositories come from a uniform random sample of GitHub, license-qualified repository search and code search.
• Only permissive licenses are admitted, checked before anything is downloaded and again against the license file in the clone. Records from files near a restrictive data-license statement (non-commercial, ODbL, ...) are left out.
• Each repository is processed in a sandbox; CSV/TSV/Excel/ODS/SQLite files become tables, .sql/.ddl files with CREATE TABLE and SQLite databases become schemas. SQL migration folders are skipped. Identical files are kept once.
• Columns detected as personal data (emails, phone numbers, IBANs, names next to those) are replaced with Faker values; PII_REPLACED_COLUMNS lists them per table.

Fields

schemapile-ng uses exactly the schema of SchemaPile, so the two can be concatenated. IS_INDEX, VALUES, INDEXES, ON_DELETE and ON_UPDATE are not extracted and stay empty.

gittables-ng, one record per table: ID (blob SHA, plus /<sheet or table>), FILENAME, URL (file at the commit), LICENSE, PERMISSIVE, REPO, PATH, TABLE_NAME (Excel sheet, SQLite table or SQL INSERT table), COMMIT_SHA, BLOB_SHA, COLUMNS (header as found), ROWS (cells as strings), ROWS_TOTAL, ROWS_STORED, PII_REPLACED_COLUMNS.

Licenses and attribution

Each record keeps the license of the repository it comes from. ATTRIBUTION.csv lists source repository, commit, path, license and copyright line for every record, which is the attribution CC-BY-4.0 and similar licenses require.

license	records
MIT	20,674
Apache-2.0	7,486
CC-BY-4.0	6,939
CC0-1.0	3,055
BSD-3-Clause	1,293
PostgreSQL	162
BSD-2-Clause	144
Unlicense	63
ISC	19
MIT-0	2