# SQL 速查表
# QUERYING SINGLE TABLE
SELECT *
FROM country;
SELECT id, name
FROM city;
SELECT name
FROM city
ORDER BY raging [asc];
SELECT name
FROM city
ORDER BY raing DESC;
# ALIASES
SELECT name AS city_name
FROM city;
SELECT co.name, ci.name
FROM city AS ci
JOIN country AS co
ON ci.country_id = co.id
# FILTERING
SELECT name
FROM city
WHERE rating > 3;
Fetch names of cities that are neither Berlin nor Madrid:
SELECT name
FROM city
WHERE name != 'Berlin'
AND name != 'Madrid';
# TEXT OPERATORS
SELECT name
FROM city
WHERE name LIKE 'P%'
OR name LIKE '%s';