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SQL Commands Reference Guide

A comprehensive collection of SQL commands for database management and querying.

Basic Commands (SQLCommands.md)

This guide covers fundamental SQL operations including:

Data Definition Language (DDL)

  • Table creation and modification
  • Index and view management
  • Schema alterations
  • Database object management

Data Manipulation Language (DML)

  • Basic CRUD operations
  • Data querying and filtering
  • Record updates and deletions
  • Transaction management

Security and Access Control

  • User management
  • Privilege control
  • Access permissions

Query Fundamentals

  • Essential WHERE clauses
  • Data aggregation with GROUP BY
  • Result sorting with ORDER BY
  • Basic filtering techniques

Advanced Commands (AdvancedSQLCommands.md)

This guide covers sophisticated SQL operations including:

Complex Querying

  • Window functions for advanced analytics
  • Common Table Expressions (CTEs)
  • Advanced joins and subqueries
  • Lateral joins and correlated queries

Performance and Optimization

  • Index optimization strategies
  • Table partitioning
  • Materialized views
  • Query performance tuning

Advanced Database Features

  • Stored procedures and functions
  • Complex transaction handling
  • Table-valued functions
  • Bulk operations

Security and Maintenance

  • Row-level security implementation
  • Advanced auditing techniques
  • Database statistics management
  • Tablespace optimization

How to Use This Repository

  1. Start with SQLCommands.md for essential database operations
  2. Progress to AdvancedSQLCommands.md for complex implementations
  3. Each command includes detailed examples and use cases
  4. Commands are organized by function for easy reference

Contributing

Feel free to submit issues and enhancement requests!

License

This project is licensed under the MIT License - see the LICENSE file for details.