How To Add A Column To A Table In Python

How to add a column to a MySQL table in Python?

It may be sometimes required to add a new column in a existing table. Suppose we have a "Students" table with columns such every bit Proper name, Historic period, Gyre no. Nosotros want to add together a new cavalcade "Accost" into our existing tabular array.

This can be washed past using the Modify command. The ALTER command is used to modify, drop or update columns in the database. This can also be used to add a new column into the tabular array using ADD clause.

Syntax

Modify TABLE table_name ADD new_column_name column_definition [FIRST | AFTER exisiting_column]

Here, table_name refers to the name of the table, new_column_name refers to the name of the column to be added, column_definition refers to the datatype of the column.

The FIRST AND Later on clause are optional.This are used to specify the particular position at which you desire to add the new column. The Outset will insert the new column at the starting time position. The Later on existing_column will insert a new column after the existing_column.

By default, the new cavalcade is inserted at the stop of the table.

Steps to add new column in a table using MySQL in python

import MySQL connector
establish connectedness with the connector using connect()
create the cursor object using cursor() method
create a query using the appropriate mysql statements
execute the SQL query using execute() method
close the connection

Example

Suppose, nosotros have a table named "Students". We desire to add a new column named "Accost" of type VARCHAR(100) in the table.

import mysql.connector db=mysql.connector.connect(host="your host", user="your username", password="your password",database="database_name")  cursor=db.cursor()  query="ALTER Table Students Add together Address VARCHAR(100)" cursor.execute(query) db.commit() impress("NEW Column ADDED..")  db.shut()

The above code adds a new column named "Address" into the table. The cavalcade is inserted at the concluding of the existing columns.

Output

NEW COLUMN ADDED..

Published on 10-Jun-2021 xiii:23:26

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