Landing a job that requires SQL skills often means preparing for a challenging interview. SQL is a foundational technology for database management, so employers test candidates on various concepts ranging from basic to advanced-level queries. This blog covers common SQL interview questions and their ...
SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
means. The SQL queries which are used the advanced functionalities to add business logic in the program or to retrieve the specific business related data are called as advanced SQL queries.You can able to learn thecomplex SQL queries,Complex SQL interview questionsand many more things in the ...
SQL Interview Questions 1. What is Pattern Matching in SQL? 2. How to create empty tables with the same structure as another table? 3. What is a Recursive Stored Procedure? 4. What is a Stored Procedure? 5. What is Collation? What are the different types of Collation Sensitivity? 6....
SQL Job Interview Questions and Answers 1 :: What is SQL (Structured Query Language)? SQL is an English like language consisting of commands to store, retrieve, maintain & regulate access to your database.Read More 2 :: What is the SQL*Plus? SQL*Plus is an application that recognizes &...
SQL Interview Questions and Answers – Video The term SQL basically connects with the database in general. The article tries to cover the concepts of SQL, the basic queries of SQL and moves towards some of the advanced and complicated SQL queries. Further, we also cover the advanced database...
This can be achieved using WHILE loop, as long as there is a unique key to identify each row. 17. Write down the general syntax for a SELECT statements covering all the options Here's the basic syntax: (Also checkout SELECT in books online for advanced syntax). SELECT select_list [...
To insert a single partial row SQL INTERVIEW QUESTIONS AND ANSWERS 12 | P a g e Define SQL Update Statement ? SQL Update is used to update data in a row or set of rows specified in the filter condition. The basic format of an SQL UPDATE statement is ,Update command followed by table...
Here, we share the basic and advanced SQL queries asked in interview questions. Our tutorials explain the SQL syntax and commands in a super easy way.
Advanced PL/SQL Interview Questions Let's now explore some advanced interview questions in case you are applying for a more senior role that requires more experience. 10. What are the methods of optimizing performance in PL/SQL? Minimizing context switches between SQL and PL/SQL is crucial for...