semi-join
Keep the rows of x that have a match in y, adding no columns.
NoteExperimental
This function is experimental; its interface may change without notice.
Since 0.6.0.
A filtering join: the output is a subset of x (columns unchanged), restricted to rows whose key appears in y. Keys compare by their string form, as in left-join.
Usage
semi-join(
x,
y,
by: none,
)Parameters
| Parameter | Default | Description |
|---|---|---|
x |
Dataset to filter (row-store or column-store). | |
y |
Dataset whose keys gate x (row-store or column-store). |
|
by |
none |
Key columns: none for the common columns, a name, or an array. |
Returns
The rows of x with a match in y.