17.10 - PRPDSkewPct - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Database Utilities

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Published
July 2021
Language
English (United States)
Last Update
2021-07-27
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Determines the percentage of rows in a join that are used by the optimizer to determine the number of skewed values used for split conditions when partial redistribution and partial duplication (PRPD) optimization is used.

A PRPD join strategy helps to minimize the impact of skew on join performance.

Field Group

Performance

Valid Range

1 through 100

Default

50

Changes Take Effect

After the DBS Control record has been written.

Related Information

  • PRPDMaxSkewedVals
  • Teradata Vantage™ - SQL Request and Transaction Processing, B035-1142