Note: The following description applies both to Postgres-XC and PostgreSQL if not described explicitly. You can read PostgreSQL as Postgres-XC except for version number, which is specific to each product.
Author: Written by Martin Utesch (
<firstname.lastname@example.org>) for the Institute of Automatic Control at the University of Mining and Technology in Freiberg, Germany.
Note: XCONLY: The following description applies only to Postgres-XC.
This chapter describes internals about PostgreSQL's planner. Postgres-XC's planner inherited and extended it. Detailed description of Postgres-XC's planner will be given elsewhere.