sql/
├── 📄 index.md
├── 📄 database-rdbms-basics.md
├── 📄 mysql-architecture.md
│
├── 📄 data-types.md
├── 📄 crud-operations.md
├── 📄 keys-constraints.md
│
├── 📄 joins.md
├── 📄 inner-join.md
├── 📄 left-join-left-outer-join.md
├── 📄 right-join-right-outer-join.md
├── 📄 full-outer-join.md
├── 📄 cross-join.md
├── 📄 self-join.md
├── 📄 exclusion-joins-anti-joins.md
├── 📄 join-conditions-pitfalls.md
├── 📄 choosing-the-right-join-decision-guide.md
│
├── 📄 subqueries-ctes.md
├── 📄 set-operations.md
├── 📄 aggregations-functions.md
├── 📄 window-functions.md
├── 📄 case-and-conditional-logic.md
├── 📄 null-handling.md
├── 📄 query-execution-order.md
│
├── 📄 normalization.md
├── 📄 indexing.md
├── 📄 views.md
├── 📄 stored-procedures-functions.md
├── 📄 triggers.md
├── 📄 json-and-fulltext.md
│
├── 📄 transactions-acid-properties.md
├── 📄 isolation-levels-and-deadlocks.md
├── 📄 locks.md
├── 📄 explain-query-optimization.md
├── 📄 performance-optimization.md
├── 📄 partitioning-and-sharding.md
├── 📄 replication.md
├── 📄 backup-and-restore.md
│
├── 📄 users-and-privileges.md
│
├── 📄 interview-questions.md
├── 📄 common-interview-questions-answers.md
├── 📄 interview-prep.md
│
└── 📄 quick-reference-summary.md
└── 📄 quick-revision-cheat-sheet.md