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Title | Brian Likes |
Description | Brian Likes Postgres About Posts Query Progress Bar Published: Mon 03 January 2022 tags: postgresql If this were YouTube, the thumbnail would look somethi |
Keywords | N/A |
WebSite | brianlikespostgres.com |
Host IP | 35.185.44.232 |
Location | United States |
Site | Rank |
US$1,243,574
Last updated: 2023-05-12 09:01:15
brianlikespostgres.com has Semrush global rank of 8,511,197. brianlikespostgres.com has an estimated worth of US$ 1,243,574, based on its estimated Ads revenue. brianlikespostgres.com receives approximately 143,490 unique visitors each day. Its web server is located in United States, with IP address 35.185.44.232. According to SiteAdvisor, brianlikespostgres.com is safe to visit. |
Purchase/Sale Value | US$1,243,574 |
Daily Ads Revenue | US$1,148 |
Monthly Ads Revenue | US$34,438 |
Yearly Ads Revenue | US$413,250 |
Daily Unique Visitors | 9,566 |
Note: All traffic and earnings values are estimates. |
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Brian Likes Postgres About Posts Query Progress Bar Published: Mon 03 January 2022 tags: postgresql If this were YouTube, the thumbnail would look something like this But seriously. Is there any way to monitor long running Postgres queries? Kinda! Using sequences. The Setup We create two tables. One small and one big. DROP TABLE IF EXISTS small ; CREATE TABLE small ( some_val int ); INSERT INTO small SELECT gs FROM generate_series ( 1 , 100 ) AS gs ; DROP TABLE IF EXISTS big ; CREATE TABLE big ( other_val int ); INSERT INTO big SELECT gs % 100 + 1 FROM generate_series ( 1 , 50000000 ) AS gs ; CREATE INDEX ON big ( other_val ); VACUUM ANALYZE small ; VACUUM ANALYZE big ; The Query This is the slow query we’ll try to monitor SELECT some_val , ( SELECT count ( * ) FROM big AS b WHERE b . other_val = s . some_val ) FROM small AS s ; The Technique Create a dummy sequence DROP SEQUENCE IF EXISTS my_sequence ; CREATE SEQUENCE my_sequence ; Find a way to incorporate a call to nextval for this |
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