Optimized cast for a column in a row to double.
Cast a given column in a schema to epoch time in long milliseconds.
A relation having a parent-child relationship with a base relation.
::DeveloperApi:: Implemented by objects that produce relations for a specific kind of data source with a given schema.
Some extensions to JdbcDialect
used by Snappy implementation.
A relation having a parent-child relationship with one or more
DependentRelation
s as children.
::DeveloperApi
A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way.
Tracks the child DependentRelation
s for all
ParentRelation
s.
Support for DML and other operations on external tables.