16.10 - Limitations and Functionality - Parallel Transporter

Teradata Parallel Transporter Reference

Product
Parallel Transporter
Release Number
16.10
Published
July 2017
Content Type
Programming Reference
Publication ID
B035-2436-077K
Language
English (United States)
  • NOSPOOL mode applies only to simple SELECT statements. The following are not supported:
    • Access to nondata tables, such as SELECT DATE or SELECT USER
    • USING modifier; instead, define restraint parameters by using a FastExport IMPORT command with supporting FIELD and FILLER commands
    • Contains a SORT (ORDER BY), HAVING, or WITH clauses
    • Joins
    • Aggregations (Explain shows SUM step)
    • TABLE functions
    • Ordered-analytic (OLAP) functions
    • Multiple SELECT statements or multistatement requests
    • Statements with zero or more than one, retrieve or sampling step
  • NOSPOOL mode only retrieves data from a single table, but the SELECT statement can be selective about which columns are exported and can constrain the job to a subset of rows.
  • Scalar expressions/functions are allowed.
  • The Sample and partition eliminating constraints are supported.
  • The Activity Count returned for a regular spooled job indicates the number of affected blocks; however, for non-spooled jobs, the number of blocks is unknown, so the response message contains ActivityType (instead of Activity Count) to indicate the NOSPOOL process.