SQL

带 WHERE 和 ORDER BY 的 SELECT

在 SQL 中使用 SELECT、WHERE 和 ORDER BY 过滤、排序和限制行。

#select#query#beginner

Code

sql

-- Basic SELECT with filtering and sorting
SELECT id, name, email, created_at
FROM users
WHERE status = 'active'
  AND age >= 18
ORDER BY created_at DESC
LIMIT 10 OFFSET 20;

-- Select distinct values
SELECT DISTINCT country
FROM users
ORDER BY country;

-- Column aliases and expressions
SELECT
  name,
  price * 1.2 AS price_with_tax,
  UPPER(name) AS name_upper
FROM products;

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