what does the @> operator in postgres do? - Stack Overflow
May 2, 2016 · 106 I came across a query in postgres here which uses the @> operator on earth objects. I've searched everywhere, but have come up empty on the meaning of this operator …
What is the difference between `->>` and `->` in Postgres SQL?
What is the difference between ->> and -> in SQL? In this thread (Check if field exists in json type column postgresql), the answerer basically recommends using, json->'attribute' is ...
sql - PostgreSQL IF statement - Stack Overflow
How can I do such query in Postgres? IF (select count(*) from orders) > 0 THEN DELETE from orders ELSE INSERT INTO orders values (1,2,3);
Find the host name and port using PSQL commands
Apr 8, 2011 · I have PSQL running, and am trying to get a perl application connecting to the database. Is there a command to find the current port and host that the database is running on?
What is the default username and password for PostgreSQL?
My problem is with getting access to the installed PostgreSQL database. The database that gets created during installation is named iviewdb. I read at many forums that the default superuser …
PostgreSQL permissions explained - Stack Overflow
Sep 6, 2014 · Please explain the output of the \\z command in PostgreSQL. I understand the permission, I read the documentation, but somehow I missed the interpretation of the output of …
How to make "case-insensitive" query in Postgresql?
May 12, 2015 · ILIKE is a non-standard extension to Postgres and it will perform very slowly. The accepted answer using the LOWER function, along with proper indexing, will perform much …
finding local postgresql “database_url” - Stack Overflow
Oct 13, 2014 · You can display your connection info if logged into postgres shell with command: \conninfo this will display the database you are connected to as well as the user logged on
postgresql - How to persist data in a dockerized postgres …
My docker compose file has three containers, web, nginx, and postgres. Postgres looks like this: postgres: container_name: postgres restart: always image: postgres ...
How to compare dates in datetime fields in Postgresql?
May 3, 2013 · I have been facing a strange scenario when comparing dates in postgresql (version 9.2.4 in windows). I have a column in my table say update_date with type timestamp without …