Recent questions tagged PostgreSQL

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postgresql - Difference between GiST and GIN index

I am implementing a table that has a column with a data type of tsvector and I am trying to understand what index ... want to use GIN vs. GiST? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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postgresql - hibernate could not get next sequence value

i have gwt application connect to postgres DB at the backend, and a java class 'Judgement' mapping the table ' ... what's wrong??? thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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727 views

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postgresql - sql - count of `true` values

myCol ------ true true true false false null In the above table, if I do : select count(*), count(myCol); ... query, so can't use a where clause See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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583 views

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postgresql - SQL query to get most recent row for each instance of a given key

I'm trying to get the ip, user, and most recent timestamp from a table which may contain both the current ... matters, the DBMS is Postgresql. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

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postgresql - Switch role after connecting to database

Is it possible to change the postgresql role a user is using when interacting with postgres after the initial connection? ... "test2" test=> q See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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660 views

1 answer

postgresql - Run pgAdmin as a service

I'm stuck on an issue on pgadmin, and I did not find any similar situation in other discussions about. I am not ... the issue is coming from here. Thinks for the solving ideas,...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

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postgresql - Getting back Server in PgAdmin prompts error “FATAL: password authentication failed for user “postgres“;“;

I have recently installed the PostgreSQL 12 and the PgAdmin 4 on my laptop running Ubuntu 18.04.5 LTS. Everything was fine, ... I am facing to be able to see my tables in PgAdmin?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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