how to use insert statements in postgres code example

Example 1: return insert results in POSTGRESQL

# to select specific columns
INSERT INTO users (firstname, lastname) VALUES ('Joe', 'Cool') RETURNING id, firstname;
# to return every column
INSERT INTO users (firstname, lastname) VALUES ('Joe', 'Cool') RETURNING *;

Example 2: postgresql, Rows, INSERT INTO

INSERT INTO table_name(column1, column2, …)
VALUES (value1, value2, …)
RETURNING *;Code language: SQL (Structured Query Language) (sql)