Hi! On Tue, Jul 10, 2018 at 4:39 PM 今井 良一 <yoshikazu_i...@live.jp> wrote: > On 2018/07/10 20:36, Alexander Korotkov wrote: > > Thank you for the experiments! It seems that there is real regression > > here... BTW, which script were you using in this benchmark: > > script_unordered.sql or script_duplicated.sql? > > Sorry, I forgot to write that. I used script_unordered.sql.
I've reread the thread. And I found that in my initial letter [1] I forget to include index definition. CREATE INDEX unordered_i_idx ON unordered (i); So, when you did experiments [2], did you define any index on unordered table? If not, then it's curious why there is any performance difference at all. 1. https://www.postgresql.org/message-id/CAPpHfduAMDFMNYTCN7VMBsFg_hsf0GqiqXnt%2BbSeaJworwFoig%40mail.gmail.com 2. https://www.postgresql.org/message-id/0F97FA9ABBDBE54F91744A9B37151A51189451%40g01jpexmbkw24 ------ Alexander Korotkov Postgres Professional: http://www.postgrespro.com The Russian Postgres Company
