Re: No hash join across partitioned tables?
Alvaro Herrera <alvherre@commandprompt.com>
From: Alvaro Herrera <alvherre@commandprompt.com>
To: Samuel Gendler <sgendler@ideasculptor.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>, Bruce Momjian <bruce@momjian.us>, Kris Jurka <books@ejurka.com>, pgsql-performance <pgsql-performance@postgresql.org>
Date: 2010-10-16T15:29:39Z
Lists: pgsql-hackers, pgsql-performance
Excerpts from Samuel Gendler's message of sáb oct 16 02:35:46 -0300 2010: > An issue with automatically analyzing the entire hierarchy is 'abstract' > table definitions. I've got a set of tables for storing the same data at > different granularities of aggregation. Within each granularity, I've got > partitions, but because the set of columns is identical for each > granularity, I've got an abstract table definition that is inherited by > everything. I don't need or want statistics kept on that table because I > never query across the abstract table, only the parent table of each > aggregation granularity Hmm, I think you'd be better served by using LIKE instead of regular inheritance. -- Álvaro Herrera <alvherre@commandprompt.com> The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support