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
Category: Database
The database is a warehouse that organizes, stores and manages data according to the data structure. It was created more than 60 years ago. With the development of information technology and the market, especially after the 1990s, data management is no longer just It is to store and manage data, and transform it into various data management methods required by users. There are many types of databases, from the simplest tables that store various data to large-scale database systems that can store massive amounts of data. They have been widely used in all aspects.
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
<
PostgreSQL query is not terminated, the service postgreSQL is not started after reboot
In my work, I am running a complex query. I canceled it and went home yesterday. It is impossible to terminate the query later this morning. There is also a “after termination” “End” function. A co
What type of NOSQL database is best suited to store hierarchical data?
What type of NoSQL database is best for storing hierarchical data?
For example, I want to store a forum post with a tree structure:
original post
+ re: original post< br /> + re: origi