WebSee how to get started, as well as some best practices for setting up and using Greenplum Database. APJ Tanzu Data Tour . Join us at the APJ Tanzu Data Tour, for a series of live sessions each month to discuss the … WebJan 23, 2024 · That has been populated every 15 seconds or so. I have been using materialized view to track duplicates like so: SELECT number, id, count(*) AS dups_count FROM my_table GROUP BY number, id HAVING count(*) > 1; The table contains thousands of records for the last 1.5 years. Refreshing this materialized view takes at …
How can you stop worrying about table and view dependencies …
WebALTER VIEW changes various auxiliary properties of a view. (If you want to modify the view's defining query, use CREATE OR REPLACE VIEW. To execute this command … WebFeb 9, 2024 · Description. CREATE VIEW defines a view of a query. The view is not physically materialized. Instead, the query is run every time the view is referenced in a query. CREATE OR REPLACE VIEW is similar, but if a view of the same name already exists, it is replaced. The new query must generate the same columns that were … small letters crossword clue
List materialized views in PostgreSQL database
WebMar 22, 2024 · Greenplum Database is based on PostgreSQL 9.4. To support the distributed nature and typical workload of a Greenplum Database system, some SQL commands have been added or modified, and there … WebJul 29, 2016 · Materialized views are especially helpful when your select list includes a subset of columns, you perform identical operations such as COUNT or SUM or extracting part of a jsonb object on every query, and when JOINing additional tables. When it comes time to actually retrieve rows, these rows can be queried against to return only relevant … WebNov 13, 2024 · 1 Answer Sorted by: 1 The solution was to take a look at pg_stats and notice that there is very low correlation for some columns. The adjusting the stats for those relevant columns using: ALTER TABLE coupon_collections ALTER COLUMN member_id SET STATISTICS 1000 Now creating view is slower by a very reasonable factor. Share … small letterman patches