3 ms·
How does it work behind the scene? Is it simply sample a portion of the data then do the diff? What if I need 100% accuracy?
by lihan 6y ago
How does it work behind the scene? Is it simply sample a portion of the data then do the diff? What if I need 100% accuracy?
- hichkaker 6y agoIf diffing datasets within the same physical database, generate SQL, execute in the database, analyze and render results. If diffing datasets across physically different databases, e.g. PostgreSQL <> Snowflake or 2 distinct MySQL servers, pull data in our engine from both sources, diff, and show results. Sampling is optional but helpful to keep compute costs low for large Mill/Bill/Trill-row datasets.