change field name table postgres code example

Example 1: rename table postgres

ALTER TABLE table_name
RENAME TO new_table_name;

Example 2: how to update column name in psql

ALTER TABLE table_name
  RENAME COLUMN old_name TO new_name;

Example 3: rename column postgres

ALTER TABLE customers 
RENAME COLUMN name TO customer_name;

ALTER TABLE customers
RENAME COLUMN phone TO contact_phone;