Move on to advanced topics: joins in depth, window functions, CTEs, indexing/query performance, transactions, and normalization — followed by practice problems on LeetCode/HackerRank SQL.

SQL (Structured Query Language) คือภาษามาตรฐานที่ใช้สื่อสารกับฐานข้อมูลเชิงสัมพันธ์ (Relational Database) — ใช้ได้กับฐานข้อมูลแทบทุกระบบ (SQLite, MySQL, PostgreSQL, SQL Server) ...

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GitGuardian researchers found 321 n8n instances accepting API tokens exposed in public GitHub commits and demonstrated four ways attackers could use them to access sensitive data and downstream ...