3 ms·
The ASOF LEFT JOIN is the main join used to create training data, where the labels are in the left table, and features are in the tables on the RHS. Note, we us
by jamesblonde 3y ago
The ASOF LEFT JOIN is the main join used to create training data, where the labels are in the left table, and features are in the tables on the RHS.
Note, we use DuckDB for its left asof join capabilities, but most vendors use Spark which is hideously slow for left asof joins.