SQL Formatting: Write Clean, Readable Queries Like a Pro

Why SQL Formatting Matters

Messy SQL is hard to debug, review, and maintain. Compare:

Before:

SELECT u.id,u.name,u.email,o.total,o.created_at FROM users u JOIN orders o ON u.id=o.user_id WHERE o.total>100 AND u.active=true ORDER BY o.created_at DESC LIMIT 50

After:

SELECT
  u.id,
  u.name,
  u.email,
  o.total,
  o.created_at
FROM users u
JOIN orders o ON u.id = o.user_id
WHERE o.total > 100
  AND u.active = true
ORDER BY o.created_at DESC
LIMIT 50

Formatting with Fluranto

The SQL Formatter tool beautifies your queries:

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Formatting Conventions

Keywords: Uppercase (SELECT, FROM, WHERE) Indentation: Consistent (2 or 4 spaces) Clauses: Each major clause on its own line Commas: Before each column (easier to add/remove columns)

Common Patterns

JOINs:

FROM users u
  JOIN orders o ON u.id = o.user_id
  LEFT JOIN payments p ON o.id = p.order_id

Subqueries:

SELECT *
FROM users
WHERE id IN (
  SELECT user_id
  FROM orders
  WHERE total > 100
)

CTEs (Common Table Expressions):

WITH active_users AS (
  SELECT id, name
  FROM users
  WHERE active = true
)
SELECT *
FROM active_users
JOIN orders ON active_users.id = orders.user_id

Beyond SQL

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