Our system will run on a local network, where no more than 50 clients connect to the same local server. We are creating a DB user for each client to take advantage of postgresql permissions System.
Month: September 2021
How does NOSQL perform a horizontal extension and how it is more effective than RDBMS extension
I am reading an article about noSQL and relational DBMS.
After many posts, I cannot understand exactly how the noSQL system performs horizontal expansion and how it is more effective than RDBMS ex
PostgreSQL multi-column unique
I have a strange situation in PostgreSQL 9.4.
I have a table:
id integer NOT NULL DEFAULT nextval(‘users_userpropmeta_id_seq’::regclass)
name character varying(255) NOT NULL
cls character va
In PostgreSQL, how to cancel the time zone offset using “At Time Zone”
I’m trying to bypass the Postgresql time zone and I can’t seem to figure this out. EST is “Eastern Standard Time” in the United States, usually UTC-5.
Example 1: Basic test
select ’08/3
PowerDesigner imports using SQL script
1. Prepare the script for creating the database
1. Prepare the script for creating the database
2 , Import SQL into powerDesigner
PostgreSQL – Export Heroku Postgres database, but exclude table
I want to export the Postgres database of my Heroku application, but I want to exclude a table. Is this possible?
This is the command I used to export the entire Postgres database:
$PGU
Can I build complex queries for NOSQL DB?
I have been studying noSQL DB, and I have not been able to answer myself satisfactorily: Can complex queries be constructed on noSQL DB?
The type of query I want to know will be like this:
PostgreSQL extracts the keys from JSONB, “Unable to call JSONB_Object_Keys on scalar”
I want to use jsonb to solve the problem in Postgres. There are many problems here, what I want to do is:
SELECT table.column->>’key_1′ as a FROM “table” I tried -> there are some combination
TIDB source reading series articles (2) first knowledge TIDB source code
This article is the second in a series of articles on the TiDB source code reading. The first article introduces the overall architecture of TiDB, knows which modules TiDB has, what they do, where
I can’t run jobs on PGAgent on PostgreSQL.
I installed pgagent on Ubuntu 16.04.
I executed:
CREATE EXTENSION pgagent;
CREATE LANGUAGE plpgsql; According to this: https://www.pgadmin.org/docs/pgadmin4/1.x/pgagent_install.htm
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