Optimization Secrets👇
1. Indexing: Create indexes on frequently queried columns.
2. Query caching: Store results of complex queries.
3. Partitioning: Divide large tables into smaller segments.
4. Materialized views: Precompute complex queries.
Advanced Query Techniques👇
1. Window functions (ROW_NUMBER, RANK, etc.)
2. Common Table Expressions (CTEs)
3. Recursive queries
4. Full-text search
Data Modeling Secrets👇
1. Denormalization: Store redundant data for performance.
2. Entity-Attribute-Value (EAV) modeling
3. Star and snowflake schema design
4. Data warehousing
Security Secrets👇
1. Encryption: Protect sensitive data.
2. Row-level security (RLS)
3. Dynamic data masking
4. SQL injection prevention
Performance Secrets👇
1. Query parallelization
2. Asynchronous queries
3. Database connection pooling
4. Caching query results
Lesser-known SQL Functions👇
1. LEAD and LAG functions
2. PERCENT_RANK and CUME_DIST
3. LISTAGG and STRING_AGG
4. JSON and XML functions
Database Design Best Practices👇
1. Normalize data to reduce redundancy.
2. Use primary and foreign keys.
3. Avoid correlated subqueries.
4. Document database schema.
SQL Standards and Versions👇
1. SQL-92 (standard)
2. SQL:2011 (standard)
3. SQL Server, Oracle, MySQL, PostgreSQL versions
Tools and Resources👇
1. DB Browser (SQLite)
2. SQL Fiddle (online editor)
3. SQL Server Management Studio (SSMS)
4. Oracle SQL Developer
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