Hidden secrets and advanced techniques about SQL🏂

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

#techwithmartony #martonyvianney #datasciencecourse #programminglife #computerscience #programmer #SQL #sqldeveloper #SQLSkills #SQLServer