On 31 October 2017 at 21:43, Amit Langote <langote_amit...@lab.ntt.co.jp> wrote:
> Attached updated version of the patches
match_clauses_to_partkey() needs to allow for the way quals on Bool
columns are represented.
create table pt (a bool not null) partition by list (a);
create table pt_true partition of pt for values in('t');
create table pt_false partition of pt for values in('f');
explain select * from pt where a = true;
QUERY PLAN
------------------------------------------------------------------
Append (cost=0.00..76.20 rows=2810 width=1)
-> Seq Scan on pt_false (cost=0.00..38.10 rows=1405 width=1)
Filter: a
-> Seq Scan on pt_true (cost=0.00..38.10 rows=1405 width=1)
Filter: a
(5 rows)
match_clause_to_indexcol() shows an example of how to handle this.
explain select * from pt where a = false;
will need to be allowed too. This works slightly differently.
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
