In PostgreSQL, “ALTER” and “UPDATE” are two different SQL commands used to modify data in a database. “ALTER” is used to modify the structure of the database, while “UPDATE” is used to modify the data stored within the database. Update: The UPDATE command plays a… Read More
CREATING A NEW TABLE You can create a new table by specifying the table name, along with all column names and their types. Syntax for table creation: CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, columnN datatype, PRIMARY KEY (one or more columns) ); An example for creating table on weather… Read More
Installation of PostgreSQL Through YUM & RPM Methods These are another two methods of installation of PostgreSQL in Linux systems: 1 – YUM Installation. 2 – RPM Installation Installation of PostgreSQL through YUM package manager in Linux System: If you are using a Linux system,… Read More
Installation of PostgreSQL Linux using Source Code: To begin, connect to the Linux virtual Machine via PuTTY using IP address. To obtain the IP address, log into the virtual machine and enter the command ‘ifconfig’ in the terminal. Now open Putty and enter the IP… Read More
Installation of PostgreSQL As PostgreSQL is an open source, we can download it from official website (www.postgresql.org) by following below steps: Go to official website >> Click on Download >> Choose your System OS >> Click “Download the installer” Select latest version (15.2 present) of… Read More
Introduction to PostgreSQL • PostgreSQL (pronounced as post-gress-Q-L) is a high demand open-source object relational database management system (ORDBMS). It was developed by a worldwide team of volunteers. It is not controlled by any private entity so, it is available for free. • PostgreSQL uses… Read More
PostgreSQL Articles Dear Readers, Please check the below list of PostgreSQL Articles SNo Description Link 1 Installation of PostgreSQL 11.4 On Windows Platform https://www.ktexperts.com/installation-of-postgresql-11-4-on-windows-platform/ 2 How to Download and Install the pgAdmin 4 https://www.ktexperts.com/how-to-download-and-install-the-pgadmin-4/ 3 Installation of PostgreSQL 11.4 in Linux Platform. https://www.ktexperts.com/installation-of-postgresql-11-4-in-linux-platform/ 4 Install… Read More
PostgreSQL Interview Q&A Part-3 Before going into the article, please check our previous article on PostgreSQL Q&A Part-2 1. Can we have different data directories for PostgreSQL Cluster? Under One PostgreSQL installation, you can create multiple Clusters. Each Cluster will have its own data directory. One… Read More
Hello Everyone, This article will help you learning basic commands in postgreSQL. Psql is an interactive terminal to work with the PostgreSQL database. It is used to retrieve data from the PostgreSQL database server faster and more effectively. The below commands are very helpful for… Read More
Tablespace Administration in Postgres – Q&A 1. What is tablespace in Postgres? A. It specifies in which location contents of the tables should be stored. We can’t use a database without tablespace Default tablespace is pg_default Users while creating objects can specify on which tablespace… Read More
