postgres round function

PostgreSQL provides developers with a rich set of tools to manage concurrent access to data. Internally, data consistency is maintained by using a multi-version model (multi-version concurrency control, MVCC). This means that each SQL statement sees

? POSTGRES-XL: PostgreSQL-based open source extensible DB cluster The recent year the industry to the "IoE" more calls louder, many traditional enterprises have to go to the "IoE" program on the desktop. I always wonder what motivates these

Recently, I have been working on a project related to PostgreSQL database, documenting the knowledge that I have learned in this process. About PostgreSQL database online already have too many relevant introduction, in order to blog the system or

0. Remove unnecessary tables and stored procedures from the 200 server Setup database DROP TABLE "Sensorpressure";DROP FUNCTION hex_to_int (text);DROP FUNCTION "Pressuredatatosensorpressure" (); 1. Back up 200 of the SETUPD database,:p g_dump-d-H

Original linkAbsrtact: Not accumulate Kuibu not even thousands of miles, want to become a qualified database administrator, first of all should have solid basic knowledge and problem processing ability. This article refers to the pivotal official

Postgres is gaining more and more attention Postgre s is gaining more and more attention. Open Database systems such as Postgre s are in conflict with large, expensive, and irregular "enterprise-level" systems, such as SQL Server and Oracle, to

PostgreSQL type ConversionLike Oracle, PostgreSQL also has a powerful type conversion function, with just two types of conversion examples below.--1 Examplepostgres=# Select 1/4;? column?----------0(1 row)In PG If you want to divide and want to keep

I. Overview Nginx is a high-performance, lightweight Web server that supports highly concurrent. Currently, Apache is still the boss of Web servers, but in the world's top 1000 Web servers, Nginx has a share of 22.4%. Nginx uses a modular

Project used in the PostgreSQL earthdistance () function to calculate the distance between two points on the Earth, the Chinese information is too little, I found an English, speak a very good article, I hereby translate, hope to be able to help

Compose and docker compatibility: The compose file format has three versions: 1, 2.x, and 3.x. Currently, the mainstream versions are 3.x, which support common parameters for docker 1.13.0 and later versions: version # specify the version services