Module datafusion::physical_plan::hash_utils

Functionality used both on logical and physical plans

Functions

build_join_schema

Creates a schema for a join operation. The fields from the left side are first

check_join_is_valid

Checks whether the schemas “left” and “right” and columns “on” represent a valid join. They are valid whenever their columns’ intersection equals the set on

create_hashes

Creates hash values for every row, based on the values in the columns.

Type Definitions

JoinOn

The on clause of the join, as vector of (left, right) columns.

JoinOnRef

Reference for JoinOn.