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CREATE TABLE users (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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username VARCHAR(64) NOT NULL UNIQUE,
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email VARCHAR(255) NOT NULL UNIQUE,
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password CHAR(64) NOT NULL,
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is_active BOOLEAN NOT NULL DEFAULT TRUE,
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role VARCHAR(32) NOT NULL DEFAULT 'user',
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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);
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SELECT
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u.username,
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u.email,
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p.title
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FROM users u
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JOIN posts p ON p.author_id = u.id
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WHERE u.is_active = TRUE
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ORDER BY p.created_at DESC
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LIMIT 20
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SELECT * FROM;
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CREATE INDEX ON posts(status);
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INSERT INTO users (username, email, password)
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VALUES ('alice', 'alice@example.com');
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UPDATE posts
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SET status = 'archived',
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WHERE published_at < datetime('now', '-1 year');
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