Module utils 

Functions

array_length

Get the length (cardinality) of an array expression

array_negative_index_to_positive

convert_nested_transforms

Converts nested transform calls to a different function.

direct_binary_operator_translation

Default translation for a binary operator.

direct_function_translation

Default translation for a function call. It just calls a SQL function with the same name.

direct_unary_operator_translation

Default translation for a unary operator.

function_translation_respecting_ignore_nulls

hamelin_array_index_to_sql_with_negatives

Convert a zero-based Hamelin index to one-based SQL index, handling negative indices. After conversion, out-of-bounds negative indices produce values <= 0. Since Trino’s element_at throws on index 0 and treats negative indices as “from end”, we guard against both by returning NULL for any converted index < 1.

hamelin_string_index_to_sql_with_negatives

Convert a zero-based Hamelin string index to one-based SQL index, handling negative indices For string operations like substr where negative indices need special handling

interval_range_to_timestamp_range

Converts a timestamp range from an interval range by converting each interval to a timestamp by adding it to now().

interval_to_range

Converts an interval expression to a timestamp range from now() + interval to now().

interval_to_timestamp

Converts an interval expression to a timestamp by calculating now() + interval.

string_length

Get the length of a string expression

string_negative_index_to_positive

timestamp_to_range

Converts a timestamp expression to a timestamp range from timestamp to now().

to_sql_concat

Default translation for a binary operator that calls SQL’s concatenation operator.

within_range

A helper that implements WITHIN (range) and also (exp) IN (range) where range is a literal

within_range_expr

A helper that implements WITHIN (range) and also (exp) IN (range) where range is an expression

wrap_timestamp