TransformFunction

class vertica_sdk.TransformFunction

Interface for a user-defined transform function. A transform function operates on a table segment and returns zero or more rows of data.

processPartition

Invoke the transform function on a set of rows contained in partition_reader, a vertica_sdk.PartitionReader object. Each call processes an entire partition of rows.

Output is written to partition_writer, a vertica_sdk.PartitionWriter object.