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https://www.geeksforgeeks.org/sql-exercises/

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SQL Practice with Solution for Beginners and Experienced - GeeksforGeeks

The results are grouped by product name using the GROUP BY clause. 9. Write a query to find all sales where the total price is greater than the average total ... How To Use Nested Select Queries in SQL; ... CRUD operations, SQL operators, aggregation functions, constraints, joins, indexes, transactions, and advanced SQL query ...

https://artoftesting.com/sql-queries-for-interview

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Top 50 SQL Query Interview Questions for Practice [2025] - ArtOfTesting

For the difference between NOT and <> SQL operators, check this link – Difference between the NOT and != operators. 9. Write an SQL query to display the total salary of each employee adding the Salary with Variable value. ... Write SQL query to find the 3rd highest salary from a table without using the TOP/limit keyword.

https://learnsql.com/blog/full-text-search-in-sql/

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Full-Text Search in SQL: Going Beyond LIKE Queries

Now use that unique index to create the full-text index: CREATE FULLTEXT INDEX ON Products(ProductDescription) KEY INDEX UI_Products ON ProductCatalog; Done! Now your ProductDescription column is searchable with Full-Text tools. Writing Full-Text Search Queries. Now for the fun part – using the new tools. Let’s go over a few common examples. 1.

https://stackoverflow.com/questions/64446940/how-do-we-use-like-o...

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How do we use LIKE operator or LIKE condition in DynamoDB?

You can use the begins_with operator with sort keys. The docs say; begins_with (a, substr)— true if the value of attribute a begins with a particular substring. The contains operator can be used on FilterExpression of scan operations on data types STRING, SET or LIST. More info in the docs.

https://www.postgresql.org/docs/current/queries-union.html

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7.4. Combining Queries (UNION, INTERSECT, EXCEPT) - PostgreSQL

The results of two queries can be combined using the set operations union, intersection, and difference. The syntax is. query1 UNION [ALL] query2 query1 INTERSECT [ALL] query2 query1 EXCEPT [ALL] query2. where query1 and query2 are queries that can use any of the features discussed up to this point.. UNION effectively appends the result of query2 to the result of query1 (although there is no ...

https://airbyte.com/data-engineering-resources/advanced-sql-conce...

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15 Advanced SQL Concepts With Examples (2025 Edition)

Advanced SQL refers to concepts and techniques beyond the foundational skills of querying data from relational databases using structured query language. While basic SQL equips you with standard operations like filtering, sorting, and altering tables, advanced SQL delves deeper, offering functionalities like window functions, aggregate functions, pivoting techniques, and many more.

https://www.tpointtech.com/sql-tutorial

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SQL Tutorial | Learn SQL for Beginners and Professionals - Java

SQL tutorial provides basic and advanced concepts of SQL. Our SQL tutorial is designed for both beginners and professionals. SQL (Structured Query Language) is used to perform operations on the records stored in the database, such as updating records, inserting records, deleting records, creating and modifying database tables, views, etc.

https://www.interviewquery.com/p/multiple-case-when-sql

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How to Use SQL CASE WHEN with Multiple Conditions (2025) - Interview Query

Learn how to use SQL CASE WHEN with multiple conditions using real-world examples, nested logic, and interview-style queries. Perfect for data science interviews. ... Write a query to select the top 3 departments with at least ten employees and rank them according to the percentage of their employees making over 100K in salary.

https://www.geeksforgeeks.org/introduction-of-relational-algebra-...

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Introduction of Relational Algebra in DBMS - GeeksforGeeks

Relational Algebra is a formal language used to query and manipulate relational databases, consisting of a set of operations like selection, projection, union, and join.It provides a mathematical framework for querying databases, ensuring efficient data retrieval and manipulation. Relational algebra serves as the mathematical foundation for query SQL

https://www.guvi.in/blog/sql-queries-with-examples/

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15 Most Common SQL Queries with Examples - GUVI Blogs

In this blog, let’s look at the 15 most common SQL queries with examples. The examples given with these SQL queries will help you to get a clear understanding. These queries are going to help you in dealing with a huge amount of data in minutes. Let’s read about SQL initially and then move into the common SQL Queries with Examples.

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