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charlesgauthereau
70 lines
2.3 KiB
SQL
70 lines
2.3 KiB
SQL
-- ============================================================
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-- HARD RESET
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-- ============================================================
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DROP TABLE IF EXISTS posts;
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DROP TABLE IF EXISTS users;
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-- ============================================================
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-- SCHEMA
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-- ============================================================
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CREATE TABLE users (
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id BIGSERIAL PRIMARY KEY,
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username VARCHAR(50) NOT NULL,
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email VARCHAR(100) NOT NULL,
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password_hash VARCHAR(255) NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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CREATE TABLE posts (
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id BIGSERIAL PRIMARY KEY,
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user_id BIGINT NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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title VARCHAR(255) NOT NULL,
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content TEXT NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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CREATE INDEX idx_posts_user_id ON posts(user_id);
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-- ============================================================
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-- USERS (~1 million rows)
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-- ============================================================
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INSERT INTO users (username, email, password_hash)
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SELECT
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'user_' || gs,
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'user_' || gs || '@example.com',
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md5(random()::text)
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FROM generate_series(1, 1000000) AS gs;
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-- ============================================================
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-- POSTS
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-- ============================================================
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-- Each post content ≈ 4 KB
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-- 300k users × 100 posts = 30 million rows
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-- 30M × 4 KB ≈ 120 GB logical
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-- After TOAST + compression ≈ 1–2 GB on disk
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--
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-- Adjust numbers if needed
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-- ============================================================
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INSERT INTO posts (user_id, title, content)
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SELECT
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u.id,
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'Post #' || p.post_no || ' by user ' || u.id,
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repeat(
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'Lorem ipsum dolor sit amet, consectetur adipiscing elit. '
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|| 'Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. ',
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40
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)
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FROM users u
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JOIN generate_series(1, 30) AS p(post_no)
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ON u.id <= 300000;
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-- ============================================================
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-- OPTIONAL: FORCE DISK MATERIALIZATION
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-- ============================================================
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VACUUM ANALYZE;
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