Module utils 

Utility functions for the interval arithmetic library

Functions

check_support

Indicates whether interval arithmetic is supported for the given expression. Currently, we do not support all PhysicalExprs for interval calculations. We do not support every type of [Operator]s either. Over time, this check will relax as more types of PhysicalExprs and Operators are supported. Currently, CastExpr, NegativeExpr, BinaryExpr, Column and Literal are supported.

convert_duration_bound_to_interval 🔒

Converts a ScalarValue containing a Duration to one containing a time interval, if applicable. Otherwise, returns None.

convert_duration_type_to_interval

Converts an [Interval] of Durations to one of time intervals, if applicable. Otherwise, returns None.

convert_interval_bound_to_duration 🔒

Converts an ScalarValue containing a time interval to one containing a Duration, if applicable. Otherwise, returns None.

convert_interval_type_to_duration

Converts an [Interval] of time intervals to one of Durations, if applicable. Otherwise, returns None.

get_inverse_op

interval_dt_to_duration_ms 🔒

If the day field of the ScalarValue::IntervalDayTime is zero, this function returns the milliseconds part. Otherwise, it returns an error.

interval_mdn_to_duration_ns 🔒

If both the month and day fields of ScalarValue::IntervalMonthDayNano are zero, this function returns the nanoseconds part. Otherwise, it returns an error.

is_datatype_supported

Indicates whether interval arithmetic is supported for the given data type.

is_operator_supported

Indicates whether interval arithmetic is supported for the given operator.