Hi,
I configured range partitions on a date column of my main table(log_full). Each partition represents a day in the month. Every day partition has a list parition of 4 tables on a text column.
log_full
log_full_01_11_2017 -->
log_full _01_11_2017_x1
log_full _01_11_2017_x2
log_full _01_11_2017_x3
log_full _01_11_2017_x4
log_full_02_11_2017
log_full _02_11_2017_x1
log_full _02_11_2017_x2
log_full _02_11_2017_x3
log_full _02_11_2017_x4
and so on....
The date column consist of date in the next format : YYYY-MM-DD HH:24:SS for example : 2017-11-01 00:01:40
I wanted to check the plan that I'm getting for a query that is using the date column and it seems that the planner choose to do seq scans on all tables.
-Each partition consist from 15M rows.
I have about 120 partitions.
The query :
explain select count(*) from log_full where end_date between to_date('2017/12/03','YY/MM/DD') and to_date('2017/12/03','YY/MM/DD');
The output is too long but it do full scans on all paritions...
any idea what can be the problem? Is it connected to the date format ?
Thanks , Mariel.
