Секция AS с выражениями и константами

Листинг 4.26. Секция AS с выражениями и константами

booktown=# SELECT 2 + 2 AS "2 plus 2",

booktown-# pi() AS "the pi fnction",

booktown-# 'PostgreSQL is more than a calculator!' AS comments;

2 plus 2 | the pi function | comments

4 | 3.14159265358979 | PostgreSQL is more than a calculator!

(1 row)