information_schema.parameters.datetime_precision

Note:

Fractional-seconds precision, or NULL if not a time data type.

Note:

Always null, since this information is not applied to parameter data types in PostgreSQL

Note:

Always null, since this information is not applied to parameter data types in PostgreSQL

Note:

Always NULL.

Note:

Precision in fractional seconds if the parameter type is datetime or smalldatetime. Otherwise, returns NULL.