Closed ritchie46 closed 1 month ago
An SQL exists filters left on availability in right. Thus a semi join.
exists
semi
Before we did an inner join + drop-duplicates, which is incorrect.
This makes the Polars query 12% faster.
An SQL
exists
filters left on availability in right. Thus asemi
join.Before we did an inner join + drop-duplicates, which is incorrect.
This makes the Polars query 12% faster.