ALTER USER

ALTER USER is a SQL statement in the Administration category. Modifies database user account properties, including password changes. The syntax is ALTER USER 'user'@'host' IDENTIFIED BY 'new_password';. It returns user modified. A typical example: ALTER USER 'app_user'@'localhost' IDENTIFIED BY 'new_secure_pass'; -- Change password for existing user -- PostgreSQL: set password expiration: ALTER USER app_user PASSWORD EXPIRE; A close relative is CREATE USER, which creates a new database user account. A close relative is GRANT, which grants specific privileges (SELECT, INSERT, UPDATE, DELETE, ALL) to a user on a database/table. A close relative is REVOKE, which removes previously granted privileges from a user. More about this category: Database administration — CREATE DATABASE, GRANT, REVOKE, SHOW, DESCRIBE. Related Administration entries: CREATE USER, GRANT, REVOKE, SHOW TABLES, DESCRIBE / DESC, SHOW INDEX, SHOW CREATE TABLE, SHOW DATABASES. This page is part of the free SQL Reference documentation covering 762+ statements, functions, and clauses, each with syntax, parameters, return values, and examples for MySQL, PostgreSQL, SQL Server, and SQLite.