Description
Create an new operator to SQL-like semi join two datasets. A semi join of R with S will output a tuple from R if it joins with any tuple in S. This can also be useful if we support IN subqueries later.
Create an new operator to SQL-like semi join two datasets. A semi join of R with S will output a tuple from R if it joins with any tuple in S. This can also be useful if we support IN subqueries later.