Postgres and Open Source Experts

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.

To rename a database in Postgres, use the ALTER DATABASE statement with the RENAME TO clause. Also, you can use pgAdmin to rename a database manually.

The meta-commands are the commands offered by psql to perform certain operations. These commands start with the backslash.

Postgres offers various built-in commands, such as CREATE SCHEMA, ALTER SCHEMA, and DROP SCHEMA, to create, modify, and drop the Postgres schemas.

PostgreSQL offers a wide range of comparison operators, including basic and advanced ones, such as =, <, <>, BETWEEN, IN, etc.

In PostgreSQL, the INTEGER data type facilitates the user to store the numerical data between the range of -2,147,483,648 to +2,147,483,647 numbers.