BuiltinDefinitions returns a map of builtin functions.

MathFunctions returns all math package functions.

Avg is the AVG aggregator function.

AvgAggregator is an aggregator that returns the average non-null value.

Count is the COUNT aggregator function.

CountAggregator is an aggregator that counts non-null expressions.

Len represents the len() function.

Lower is the LOWER function It returns the lower-case version of a string.

Max is the MAX aggregator function.

MaxAggregator is an aggregator that returns the minimum non-null value.

Min is the MIN aggregator function.

MinAggregator is an aggregator that returns the minimum non-null value.

ObjectFields implements the objects.fields function which returns the list of top-level fields of an object.

PK represents the pk() function.

A ScalarDefinition is the definition type for functions which operates on scalar values in contrast to other SQL functions such as the SUM aggregator which operates on expressions instead.

A ScalarFunction is a function which operates on scalar values in contrast to other SQL functions such as the SUM aggregator wich operates on expressions instead.

Sum is the SUM aggregator function.

SumAggregator is an aggregator that returns the minimum non-null value.

TRIM removes leading and trailing characters from a string based on the given input.

Upper is the UPPER function It returns the upper-case version of a string.

A Definition transforms a list of expressions into a Function.

Definitions table holds a map of definition, indexed by their names.

Packages represent a table of SQL functions grouped by their packages.