SQL Revising the Select Query I EasySQL (Basic)Max Score: 10Success Rate: 95.96% Solve Challenge

SQL (Basic) Skills Certification Test Verify your SQL Skills. Accelerate your Job Search. Take the HackerRank Certification Test and showcase your knowledge as a HackerRank verified …

These concepts introduce more complex features and functionalities of SQL. They are essential for building more sophisticated and robust queries, managing data relationships, and …

Query all columns for every row in a table.

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Join over 28 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews.

SQL 15 Days of Learning SQL HardSQL (Advanced)Max Score: 50Success Rate: 77.52% Solve Challenge

PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries.

SQL Concepts It covers topics like query optimization, data modeling, Indexing, window functions, and pivots in SQL.

These concepts cover the fundamental syntax and basic features of SQL. They are necessary for writing simple SQL queries and understanding the core structure and flow of database …