|< < 13 > >|

Select

Output relation contains the rows from input for which a given predicate evaluates to true.

R

X Y Z
1aaa10
1bbb20
2aaa30
2eee40
3ccc50
4fff60


select(R, Z > 20)

X Y Z
2aaa30
2eee40
3ccc50
4fff60

|< < 13 > >|