Module functions 

Functions

can_coerce_from

Return true if a value of type type_from can be coerced (losslessly converted) into a value of type_to

coerced_from 🔒

Find the coerced type for the given type_into and type_from. Returns None if coercion is not possible.

data_types

Performs type coercion for function arguments.

data_types_with_scalar_udf

Performs type coercion for scalar function arguments.

fields_with_aggregate_udf

Performs type coercion for aggregate function arguments.

fields_with_window_udf

Performs type coercion for window function arguments.

get_valid_types 🔒

Returns a Vec of all possible valid argument types for the given signature.

get_valid_types_with_aggregate_udf 🔒

get_valid_types_with_scalar_udf 🔒

get_valid_types_with_window_udf 🔒

is_well_supported_signature 🔒

maybe_data_types 🔒

Try to coerce the current argument types to match the given valid_types.

maybe_data_types_without_coercion 🔒

Check if the current argument types can be coerced to match the given valid_types unlike maybe_data_types, this function does not coerce the types. TODO: I think this function should replace maybe_data_types after signature are well-supported.

try_coerce_types 🔒