Database - What is "correlated subqueries"?

What is "correlated subqueries"?

- In "correlated subqueries", the result of outer query is passed to the subquery and the subquery runs for each row.

What is "correlated sub queries"?

A correlated sub query is a type of sub query. Unlike sub query, a correlated sub query is dependent upon the outer query, which returns a value. When a reference to the outer query is found in the sub query, then the outer query will execute first, and the result will be returned to the correlated sub query. The sub query is executed alter for every row that is selected in the outer query.
Database - What is Data Warehousing?
Data Warehousing is a process of storing and accessing data from central location for some strategic decision...
Database - What is a join and explain different types of joins
Joins are utilized to get the results from two or more tables. There are two types of joins available.......
25 RDBMS Interview Questions and Answers - Freshers, Experienced
RDBMS interview questions and answers for freshers and experienced - List of RDBMS questions with answers that might be asked during an interview - Why a database is called as relational database model?, What are entities and attributes referring to?, What do you understand by relation in relational database model?
Post your comment