Projecting from an IMDC with the API - Aster Execution Engine

Teradata Aster® Developer Guide

Product
Aster Execution Engine
Release Number
7.00.02
Published
July 2017
Language
English (United States)
Last Update
2018-04-13
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Product Category
Software
By default, an input iterator on an IMDC produces all columns stored in the IMDC. The call that returns a default input iterator is InMemoryDataCollection::newRowIterator().
  • To return an input iterator that produces a subset of columns stored in the IMDC, use this call:
    InMemoryDataCollection::newRowIterator(
      ImmutableList<Integer>  projectionColumnIndexes)

    Each integer in list is the index of a column to include in the subset.