1. Compare SQL Server with Oracle. 2. How can SQL Server instances be hidden? 3. Can we add a CPU to SQL Server? 4. How can we check whether the port number is connecting or not on a Server DBA? 5. How can you
SQL - Using Single-Row Functions SQL - Conditional Expressions SQL - Using the Group Functions SQL - Get Data from Multiple Tables SQL - Subqueries to Solve Queries SQL - Using the Set Operators SQL - Manipulating Data SQL - Using DDL Statements SQL - Creating Other Schema Objects SQL - The...
Comprehensive, community-driven list of essential SQL interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next SQL interview ahead of time.
SQL - Using Single-Row Functions SQL - Conditional Expressions SQL - Using the Group Functions SQL - Get Data from Multiple Tables SQL - Subqueries to Solve Queries SQL - Using the Set Operators SQL - Manipulating Data SQL - Using DDL Statements SQL - Creating Other Schema Objects SQL - The...
Retrieving data using summary queries is usually faster than using subqueries. Using JOINS can reduce data usage and storage on the database. Here you can use one JOIN query instead of multiple queries. So you can use a large database to search, filter, organize, and more. 27. State the...
There are two parts of a subquery. The two parts involve the outer query and the inner query. The inner query is basically called as a subquery, and the outer query is known as the main query in the Database. The implementation of subqueries is always done first, and the outcome of th...
Yes. It is absolutely possible to select data from multiple tables using SQL. This can be done in several ways. These include: JOIN tables Use subqueries Use comma separated list of tables 11. What is a JOIN in SQL? What are the types?
One example of this is when optimizers will rewrite subqueries into their equivalent joins, and that will make the processing that must follow much simpler. For some DBMS’s, there are certain options that have to be enabled so that the optimizer can actually rewrite queries. ...
12.What are different types of Subqueries?(Mostly asked in Interview Questions For SQL) Answer: Following are types of subqueries: 1.Single Row Subquery 2.Multirow Subquery 3.Correlated Subquery 4.Nested SubQueries 5.Scalar Subqueries Click here to get information about Subqueries.. ...
Correlated Queries are one of the types of subqueries where it output of the query is dependent on the outer query. In this case, the outer query executes first and on basis of the correlated query executes. Q10: What are ranking functions in SQL Server Explain. ...