COMMENT ON

COMMENT ON is a SQL statement in the DDL Statements category. Adds a comment/description to a database object (table, column, index). PostgreSQL syntax. The syntax is COMMENT ON TABLE table_name IS 'text';. It returns comment added. A typical example: COMMENT ON TABLE employees IS 'Primary employee records table'; COMMENT ON COLUMN employees.salary IS 'Annual salary in USD'; A close relative is CREATE TABLE, which creates a new table in the database with specified columns, data types, and constraints. A close relative is ALTER TABLE, which modifies an existing table: add/drop columns, modify data types, rename, add/drop constraints. A close relative is DROP TABLE, which permanently removes a table and all its data from the database. Cannot be undone. More about this category: Data Definition Language — CREATE TABLE, ALTER TABLE, DROP TABLE, TRUNCATE, CREATE INDEX. Related DDL Statements entries: CREATE TABLE, ALTER TABLE, DROP TABLE, TRUNCATE TABLE, RENAME TABLE, CREATE DATABASE, DROP DATABASE, CREATE SCHEMA.