15.00 - PRPDSkewPct - Teradata Database

Teradata Database Utilities

Product
Teradata Database
Release Number
15.00
Content Type
Configuration
Publication ID
B035-1102-015K
Language
English (United States)
Last Update
2018-09-25

PRPDSkewPct

Purpose  

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 Topics

For more information on PRPD, see:

  • “PRPDMaxSkewedVals” on page 414.
  • SQL Request and Transaction Processing