APL datetime fields are now fully supported
Datetime fields are fully supported on APL, literals of type datetime have the syntax datetime (value), where a number of formats are supported for value.
APL: improved support for null types
We have improved support for null types, the scalar function isnull can be used to determine if a scalar value is the null value. The corresponding function isnotnull can be used to determine if a scalar value isn't the null value.
