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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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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE posts (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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author_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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title VARCHAR(200) NOT NULL,
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slug VARCHAR(200) NOT NULL UNIQUE,
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body TEXT NOT NULL,
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status VARCHAR(16) NOT NULL DEFAULT 'draft'
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CHECK (status IN ('draft', 'published', 'archived')),
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view_count INTEGER NOT NULL DEFAULT 0,
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published_at TIMESTAMP,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE tags (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name VARCHAR(50) NOT NULL UNIQUE
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);
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CREATE TABLE post_tags (
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post_id INTEGER NOT NULL REFERENCES posts(id) ON DELETE CASCADE,
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tag_id INTEGER NOT NULL REFERENCES tags(id) ON DELETE CASCADE,
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PRIMARY KEY (post_id, tag_id)
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);
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CREATE INDEX idx_posts_author ON posts(author_id);
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CREATE INDEX idx_posts_status ON posts(status);
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CREATE INDEX idx_posts_slug ON posts(slug);
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CREATE INDEX idx_users_email ON users(email);
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INSERT INTO users (username, email, password, role)
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VALUES ('alice', 'alice@example.com', 'hashed_placeholder', 'admin');
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INSERT INTO tags (name) VALUES ('nim'), ('parsing'), ('devtools');
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INSERT INTO posts (author_id, title, slug, body, status)
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VALUES (1, 'Introducing Nimcheck', 'introducing-nimcheck',
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'Nimcheck is a universal syntax validator.', 'published');
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INSERT INTO post_tags (post_id, tag_id)
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SELECT p.id, t.id
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FROM posts p, tags t
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WHERE p.slug = 'introducing-nimcheck'
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AND t.name IN ('nim', 'parsing', 'devtools');
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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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p.status,
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p.view_count,
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GROUP_CONCAT(t.name, ', ') AS tag_list
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FROM users u
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JOIN posts p ON p.author_id = u.id
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LEFT JOIN post_tags pt ON pt.post_id = p.id
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LEFT JOIN tags t ON t.id = pt.tag_id
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WHERE u.is_active = TRUE
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AND p.status != 'archived'
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GROUP BY p.id
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ORDER BY p.created_at DESC
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LIMIT 20;
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UPDATE posts
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SET status = 'archived',
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updated_at = CURRENT_TIMESTAMP
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WHERE published_at < datetime('now', '-1 year')
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AND status = 'published';
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|
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WITH post_stats AS (
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SELECT
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author_id,
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COUNT(*) AS total_posts,
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SUM(view_count) AS total_views,
|
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AVG(view_count) AS avg_views
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FROM posts
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GROUP BY author_id
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)
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SELECT u.username, ps.total_posts, ps.total_views, ps.avg_views
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FROM users u
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JOIN post_stats ps ON ps.author_id = u.id
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ORDER BY ps.total_views DESC;
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