📚 Strange Code (2022)
🔗 Download Link: https://cuty.io/g3gHvAH
💬 Tags: #code
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✅ By: @DataScience_Books - @DataScience4 - @EBooks2023
🔗 Download Link: https://cuty.io/g3gHvAH
💬 Tags: #code
🌟 Premium Bot & Channel
✅ By: @DataScience_Books - @DataScience4 - @EBooks2023
Important SQL concepts to master.pdf
3 MB
Important #SQL concepts to master:
- Joins (inner, left, right, full)
- Group By vs Where vs Having
- Window functions (ROW_NUMBER, RANK, DENSE_RANK)
- CTEs (Common Table Expressions)
- Subqueries and nested queries
- Aggregations and filtering
- Indexing and performance basics
- NULL handling
Interview Tips:
- Focus on writing clean, readable queries
- Explain your logic clearly don’t just jump to #code
- Always test for edge cases (empty tables, duplicate rows)
- Practice optimization: how would you improve performance?
https://t.iss.one/DataAnalyticsX⭐
- Joins (inner, left, right, full)
- Group By vs Where vs Having
- Window functions (ROW_NUMBER, RANK, DENSE_RANK)
- CTEs (Common Table Expressions)
- Subqueries and nested queries
- Aggregations and filtering
- Indexing and performance basics
- NULL handling
Interview Tips:
- Focus on writing clean, readable queries
- Explain your logic clearly don’t just jump to #code
- Always test for edge cases (empty tables, duplicate rows)
- Practice optimization: how would you improve performance?
https://t.iss.one/DataAnalyticsX
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