https://neon.com/postgresql/tutorial/add-column
PostgreSQL ADD COLUMN: Add One or More Columns to a Table
This tutorial shows you how to use the PostgreSQL ADD COLUMN statement to add one or more columns to an existing database table.
add columnor morepostgresqlonecolumns
https://www.cockroachlabs.com/blog/sql-add-column-drop-column/
SQL ADD COLUMN and DROP COLUMN: Syntax, Examples, and Best Practices
Learn how SQL ADD COLUMN and DROP COLUMN work, with syntax examples, common pitfalls, and schema change best practices for production databases.
add columnbest practicessqldropsyntax
https://jira.mariadb.org/browse/MDEV-36444
[MDEV-36444] add CREATE_OPTIONS column to I_S.STATISTICS and I_S.COLUMNS - Jira
addcreateoptionscolumnstatistics