Post #1549

📊Here's a breakdown of SQL interview questions covering various topics: 🔺Basic SQL Concepts: -Differentiate between SQL and NoSQL databases. -List common data types in SQL. 🔺Querying: -Retrieve all records from a table named "Customers." -Contrast SELECT and SELECT DISTINCT. -Explain the purpose of the WHERE clause. 🔺Joins: -Describe types of joins (INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN). -Retrieve data from two tables using INNER JOIN. 🔺Aggregate Functions: -Define aggregate functions and name a few. -Calculate average, sum, and count of a column in SQL. 🔺Grouping and Filtering: -Explain the GROUP BY clause and its use. -Filter SQL query results using the HAVING clause. 🔺Subqueries: -Define a subquery and provide an example. 🔺Indexes and Optimization: -Discuss the importance of indexes in a database. &Optimize a slow-running SQL query. 🔺Normalization and Data Integrity: -Define database normalization and its significance. -Enforce data integrity in a SQL database. 🔺Transactions: -Define a SQL transaction and its purpose. -Explain ACID properties in database transactions. 🔺Views and Stored Procedures: -Define a database view and its use. -Distinguish a stored procedure from a regular SQL query. 🔺Advanced SQL: -Write a recursive SQL query and explain its use. -Explain window functions in SQL. ✅👀These questions offer a comprehensive assessment of SQL knowledge, ranging from basics to advanced concepts. ❤️Like if you'd like answers in the next post! 👍 👉Be the first one to know the latest Job openings 👇 https://t.me/jobs_SQL