To change the position of a column:
ALTER TABLE tbl_name MODIFY COLUMN col_name column_definition AFTER col_name;
More info at https://mariadb.com/kb/en/alter-table/.
PostgreSQL is a object-orientated database. The main feature of a object-orientated database is that tables can inherit from other tables, which means they automatically get all the data columns of the table they inherit from (similar to object inheritance in object-orientated programming languages).
Inheritance is defined when creating tables with the
INHERITS clause with the
CREATE TABLE statement:
CREATE TABLE people ( name text, age int ); CREATE TABLE student ( student_id text, ) INHERITS (people);
If a table already exists, you can inheritance via the
INHERIT variant of the
ALTER TABLE statement.
Working With PostgreSQL In Python
One of the most popular PostgreSQL libraries for Python is
psycopg2. To install it on Ubuntu you will also need the
libpg-dev package on your system:
sudo apt install libpq-dev pip install psycopg2