15.10 - Filter Operators - Parallel Transporter

Teradata Parallel Transporter User Guide

prodname
Parallel Transporter
vrm_release
15.10
category
User Guide
featnum
B035-2445-035K

Filter Operators

Filter operators can both consume data from an input data stream and produce data for an output data stream. Filter operators prevent the output of any data row that contains column values that fail to satisfy filter conditions.

Although Teradata PT does not include any specific filter operators, the following filter operations can be accomplished using Teradata PT:

  • Teradata PT job scripts can invoke user-written filter operators that are coded in the C or C++ programming languages. For more information about creating customized operators, see the Teradata Parallel Transporter Operator Programmer Guide.
  • Teradata PT includes the MultiLoad INMOD Adapter filter-type operator.
  • Teradata PT supports several filtering capabilities, specifically the WHERE clause and CASE DML expressions in APPLY statements. These can handle most filtering operations.
  • Functioning between producer and consumer operators, filter operators can perform the following functions:

  • Validating data
  • Cleansing data
  • Condensing data
  • Updating data
  • Filter operators are summarized in Table 2 on page 37. For details, see Teradata Parallel Transporter Reference.