Module logical_expr

Extends logical expression.

Traits

ExprExt

Functions

coerce_expr

Coerce expression of literals to column type.

coerce_filter_type_to_boolean

Coerce logical expression for filters to boolean.

get_as_string_scalar_opt

A simple helper function that interprets an Expr as a string scalar or returns None if it is not.

resolve_column_type

Given a Expr::Column or Expr::GetIndexedField, get the data type of referenced field in the schema.

resolve_expr

Resolve logical expression expr.