13 янв. 2023 г. · The EXPLAIN plan cost is just Redshift's best guess as to how expensive each step will be. The 2 cost values are the begin and end cost ...

18 нояб. 2020 г. · Redshift is great when you are calculating aggregates, but doesn't give much benefit if you are simply retrieving millions of values.

15 дек. 2022 г. · The query plan is the execution plan that the PostgreSQL planner (Amazon Redshift is based on PostgreSQL) has generated for the your SQL statement.

22 февр. 2022 г. · In Redshift one of the query is taking 3 hours to execute while analyzing its query plan it seems the network is taking all the time.

1 мар. 2016 г. · The filters are applied only after the join is performed. Incase you want the join to happen after the filters are applied, I would suggest ...

6 июн. 2021 г. · So, for example, in Redshift scanning a table has a cost of 1 per row. Sorting a table has a cost of I think it was 1,000,000,000 (one billion) ...

29 мар. 2018 г. · To compare the explain, do "explain (analyse, costs, timing, buffers, verbose, format json)" then you can compare using a side-by-side diff tool.

5 февр. 2024 г. · I'm facing a query performance on a quite complex query in Redshift and as a noob in Redshift I don't understand. The query is made of ...

8 мая 2020 г. · I have a query which is taking more than 15 mins to execute in Redshift. This query is being triggered using AWS Lambda which has a timeout of 15 mins.

10 сент. 2017 г. · In Redshift, the queries are taking too much time to execute. Some queries keep on running or get aborted after some time.