SQL series for layoffs, job switchers & freshers! Daily 5 LeetCode SQL QnA — 40 done, Day 8 today!

Описание: SQL series for layoffs, job switchers & freshers!
Daily 5 LeetCode SQL QnA — 40 done, Day 8 today!
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Day8/10 SQL Challenge out of 50 Top SQL LEETCODE
QnA - Those who still failing FAANG/ product-based interviews? Start with these SQL LeetCode problems. Harsh truth can’t easy to accept.

✅ LeetCode 1907. Count Salary Categories
✅ LeetCode 1978. Employees Whose Manager Left the Company
✅ LeetCode 626. Exchange Seats
✅ LeetCode 1341. Movie Rating
✅ LeetCode 1321. Restaurant Growth

CRACK ANY Data Analyst / Business Analyst Interview by knowing & solving these SQL Leetcode Questions

1. Understand the Basics
Learn about relational databases and SQL fundamentals.
Familiarize yourself with basic SQL syntax, keywords, and data types.

2. Learn Data Manipulation
Study CRUD operations: Create, Read, Update, and Delete data.
Practice writing INSERT, SELECT, UPDATE, and DELETE statements.

3. Master Querying Data
Understand how to retrieve specific data using SELECT statements.
Learn about filtering data with WHERE clause, sorting data with ORDER BY, and limiting results with LIMIT.

4. Explore Joins and Relationships
Study the different types of joins and when to use them: INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.
Learn how to work with multiple tables and establish relationships between them.

5. Deepen Your Knowledge
Dive into advanced topics like subqueries, aggregate functions (e.g., COUNT, SUM, AVG), and grouping data with GROUP BY.
Learn about database normalization and denormalization to optimize database design.

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