join#

cudf._lib.pylibcudf.join.cross_join(Table left, Table right) Table#

Perform a cross join on two tables.

For details see cross_join().

Parameters:
leftTable

The left table to join.

right: Table

The right table to join.

Returns:
Table

The result of cross joining the two inputs.

cudf._lib.pylibcudf.join.full_join(Table left_keys, Table right_keys, null_equality nulls_equal) tuple#

Perform a full join between two tables.

For details, see full_join().

Parameters:
left_keysTable

The left table to join.

right_keysTable

The right table to join.

nulls_equalNullEquality

Should nulls compare equal?

Returns:
Tuple[Column, Column]

A tuple containing the row indices from the left and right tables after the join.

cudf._lib.pylibcudf.join.inner_join(Table left_keys, Table right_keys, null_equality nulls_equal) tuple#

Perform an inner join between two tables.

For details, see inner_join().

Parameters:
left_keysTable

The left table to join.

right_keysTable

The right table to join.

nulls_equalNullEquality

Should nulls compare equal?

Returns:
Tuple[Column, Column]

A tuple containing the row indices from the left and right tables after the join.

cudf._lib.pylibcudf.join.left_anti_join(Table left_keys, Table right_keys, null_equality nulls_equal) Column#

Perform a left anti join between two tables.

For details, see left_anti_join().

Parameters:
left_keysTable

The left table to join.

right_keysTable

The right table to join.

nulls_equalNullEquality

Should nulls compare equal?

Returns:
Column

A column containing the row indices from the left table after the join.

cudf._lib.pylibcudf.join.left_join(Table left_keys, Table right_keys, null_equality nulls_equal) tuple#

Perform a left join between two tables.

For details, see left_join().

Parameters:
left_keysTable

The left table to join.

right_keysTable

The right table to join.

nulls_equalNullEquality

Should nulls compare equal?

Returns:
Tuple[Column, Column]

A tuple containing the row indices from the left and right tables after the join.

cudf._lib.pylibcudf.join.left_semi_join(Table left_keys, Table right_keys, null_equality nulls_equal) Column#

Perform a left semi join between two tables.

For details, see left_semi_join().

Parameters:
left_keysTable

The left table to join.

right_keysTable

The right table to join.

nulls_equalNullEquality

Should nulls compare equal?

Returns:
Column

A column containing the row indices from the left table after the join.