BEGINNER • SQL Fundamentals
Data Engineering Playbook #15
This lesson focuses on reduce storage costs for a customer 360 view environment. You will use: INSERT INTO logs VALUES (...) | pip install pandas sqlalchemy | SELECT * FROM users LIMIT 10. The content is designed for practical data engineering execution.
Code Example
-- Data pipeline for customer 360 view
-- Objective: reduce storage costs
CREATE TABLE IF NOT EXISTS staging_events (
id BIGINT,
event_type VARCHAR(50),
created_at TIMESTAMP
);
INSERT INTO staging_events
SELECT id, event_type, created_at
FROM raw_events
WHERE created_at >= CURRENT_DATE - INTERVAL '1 day';
-- Verify: INSERT INTO logs VALUES (...)Commands & References
- INSERT INTO logs VALUES (...)
- pip install pandas sqlalchemy
- SELECT * FROM users LIMIT 10
Lab Steps
- Prepare environment with: INSERT INTO logs VALUES (...)
- Design or modify the data pipeline for the scenario.
- Validate data quality and document lineage.
- Propose one optimization for production.
Exercises
- Add one data quality check.
- Implement one incremental loading pattern.
- Write a rollback procedure for this pipeline.