The ALTER TABLE statement is used to add, delete, or modify columns in an existing table. The ALTER TABLE statement is also used to add and drop various constraints on an existing table.

Nov 18, 2025 · Learn how to add columns to an existing table in SQL Server and Azure SQL platforms by using SQL Server Management Studio or Transact-SQL.

Jun 6, 2025 · Learn how to use Alter Table to Add Column in SQL Server with this article that shows several scenarios of adding a column to existing table.

In Object explorer, right-click the table to which you want to add new columns and choose Design. Click the first blank cell under the last column name column and enter the name of the column, as shown …

Sep 20, 2025 · Learn how to add a new column to an existing SQL table using the ALTER TABLE statement. Step-by-step explanation with real-world examples.

This SQL tutorial explains how to use the SQL ALTER TABLE statement to add a column, modify a column, drop a column, rename a column or rename a table (with lots of clear, concise examples). …

Aug 25, 2025 · Learn how to use SQL ALTER TABLE to add columns to existing tables. Follow examples for adding data types and default values.

This tutorial shows you how to use SQL Server ALTER TABLE ADD column statement to add one or more columns to a table.

Dec 23, 2025 · The ALTER TABLE command helps us change the structure of an existing table without deleting data. We can add new columns, modify data types, rename columns, or remove unwanted …

Jul 23, 2025 · Sometimes it might happen that at the time of table creation, we forget to add some columns to our table. We resolve this problem by using ALTER TABLE ADD command, which allows …