Leet Code SQL 50 Solutions to Problems 1 and 2 in PostgreSQL
Leet Code SQL 50 Course 👉 https://stepik.org/a/265676
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Project Telegram Channel 👉 https://t.me/postgresql_russia
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My Courses on the Stepik Platform
R Language Course 👉 https://stepik.org/a/250055 (This course can be expanded, the initial cost is minimal)
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Algorithms and Data Structures (Graphs) 👉 https://stepik.org/a/251639 (This course can be expanded, the initial cost is minimal)
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Apache Superset Course 👉 https://stepik.org/a/248838
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For questions about organizing and conducting courses, corporate training, individual lessons, and collaboration: https://t.me/Golubnichij