Experts in Postgres and Open Source Infrastructure

The Postgres LENGTH() function accepts a string as an argument and calculates the total number of characters in that particular string.

In PostgreSQL, the “\l” command and “pg_databases” catalog are used to show the list of databases. Use the “\l+” command to show databases with more details.

A Postgres database can be created using “CREATE DATABASE” or “createdb” commands. The difference is that the “createdb” can be executed from the command prompt.

To install PostgreSQL on the Arch system, use the default Pacman package manager tool. More specifically, using the “sudo pacman -S postgresql” command.

In PostgreSQL, the LIMIT clause and OFFSET clause allow us to retrieve only a subset of data returned/generated by the SELECT query.

To install Postgres on Ubuntu 24.04, first update the system packages and then use the “sudo apt install postgresql postgresql-contrib -y” command.

In PostgreSQL, the RENAME TO clause is used with the collaboration of the ALTER TABLE statement to rename an already existing table.

To use TIME data type in Postgres, first, create a table with a TIME-type column. Once created, you can insert any time value into that column using the INSERT command.

In PostgreSQL, the “INSERT INTO” statement is used to add/insert an individual or multiple records into a specific table.

If statement executes only those expressions that satisfy the specified condition. Otherwise the control will be moved to the next statement.