In PostgreSQL 9.5, I decided to create a materialized view “effect” and schedule hourly concurrent refreshes, because I want it to be always available:
< /p> REFRESH MATERIALIZED VIEW CONCURR
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.
How to add time-related triggers in PostgreSQL?
Regarding how: I am confused and powerless:
>After setting up the database, add a trigger to the postgresql database, that is, add a trigger by clicking a hyperlink
>Write a trigger function
PowerDesigner writes Name to the PD7 in Comment.
Background:
I used PowerDesigner when developing projects recently. It is very uncomfortable to look at the fields in the database design, because the Chinese people still like to read Chines
PostgreSQL – “INSERT INTO … FETCH All from …” unable to compile
I have some functions to return cursors (refcursor) on PostgreSQL 9.6:
CREATE OR REPLACE FUNCTION public.test_returning_cursor( )
RETURNS refcursor
IMMUTABLE
LANGUAGE plpgsql
AS $$
DECLARE
[Big Data] In-depth analysis of the distributed algorithm of the NOSQL database
In-depth analysis NoSQL database distributed algorithm < /section> Although the NoSQL movement did not bring fundamental technological changes to distributed data processing, it s
PowerDesigner collaboration with SQL Server () data model and database of database
Data model conversion into database Generate database script according to DB design, “Database”-“Generate Database…”;
< /span>
Set the script storage path and name, select “Direct generati
Deploy high performance PostgreSQL cluster
Postgres-XL is composed of three major components: the GTM (Global Transaction Manager), the Coordinator and the Datanode. Their features are given in the following sections. GTM (Global Transactio
PostgreSQL – How do I know the actual count in a big table of high insertion rates
Suppose I have a table with exactly 10M rows. I need to know the exact number of rows. It takes 5 seconds for COUNT requests. Suppose 100 rows are added to the table every second.
If I now re
An article detailed Nosql database Redis
A picture to explain the branch products of DB
Introduction to osql database
It is a non-relational database service that can solve the concurrency capabilities of conventional databases,
How to sort in PostgreSQL via UUID?
Is there any order guarantee for using uuid_generate_v1() on postgresql?
If yes, it does not matter whether it is guaranteed to generate the UUID on each machine or on which machine? Since V1