(90% asked PL SQL Interview Questions) Answer: 1.To create unique index you must have CREATE ANY INDEX privilege.Here the concept is bit different.User needs to check the values of the table to create unique index.If table contains uniquely identified values in specified column then you shoul...
Click HERE to get MAC SUPPORT INTERVIEW QUESTIONS FOR FREE Complex SQL Queries Examples(90% ASKED IN Interviews) Complex SQL Queries Interview Book DOWNLOAD FOR FREE 1.Query to find Second Highest Salary of Employee?(click for explaination) Answer: Select distinct Salary from Employee e1 where 2=...
A query, in SQL, is a command used to request data or update information from a database table or combination of tables. Users can write and execute queries to retrieve, delete or update information in a database. Usually, a query response returns data from different tables within the data...
16. What are the new features introduced in SQL Server 2000 (or the latest release of SQL Server at the time of your interview)? What changed between the previous version of SQL Server and the current version? This question is generally asked to see how current is your knowledge. Generally...
What are the different type of SQL or different commands in SQL? Ans: Frequently asked SQL Interview Questions 1.DDL – Data Definition Language.DDL is used to define the structure that holds the data. 2.DML– Data Manipulation Language ...
If you've got an SQL interview coming up, you'll almost certainly be asked about JOIN clauses. Make sure you're prepared by practicing these 5 tough questions on JOINs in advance.
Information from a previous student "asked in an interview". What is a linked server? Allows remote access and the ability to write queries directly on a database on another machine.Day03 What is a cursor? (A loop that allows row by row processing in a result set.In order to work ...
5. What are the user roles available in SSRS? 6. Can you write a query to find nth highest salary of an employee? 7. Write a query to delete duplicate records from a table. Note: Write queries that suits the below situation. A table is having a unique key and having duplicates ...
In this article Context Reasoning Illustration Summary See Also Context There was an interesting question once asked during an interview for SQL skills which looks like the below: "Which is the simplest type of join and which is the most generic type of join statement?" ...
Frequently asked questions Which SQL course is best for beginners? The best SQL course for beginners isIntroduction to SQL. It covers the basics of relational databases, creating SQL queries and an introduction to the most popular SQL favors (PostgreSQL and SQL Server). ...