It can simplify complex queries. Simple View: It is a view based on a single table and does not have a GROUP BY clause or other SQL features. Complex View: It is a view built from several tables and includes a GROUP BY clause as well as functions. Inline View: It is a view built...
The user-defined functions in SQL are like functions in any other programming language that accept parameters, perform complex calculations, and return a value. They are written to use the logic repetitively whenever required. There are two types of SQL user-defined functions: Scalar Function: As...
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 ...
They help simplify complex queries by breaking them down into smaller, more manageable parts. CTEs are useful when a query involves recursion or when parts of the query need to be referenced multiple times. Choosing between a subquery and a CTE depends on the specific requirements of the query...
Full-text search and LIKE predicate are designed to fulfill different requirements. Full-text search is more efficient and powerful while running complex searching operations with the help of their in-built predicatesCONTAINSandFREETEXTand the rowset-valued functionsCONTAINSTABLEandFREETEXTTABLEwith aSELECT...
A Common Table Expression (CTE) is a temporary named result set that simplifies complex queries by: Improving query readability. Supporting recursive queries. Allowing modular query building. Example: WITH EmployeeCTE AS ( SELECT EmployeeID, Name, Department, Salary ...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
Unix Interview Questions Unix Tutorials Tags Basic SQL Queries Complex View difference between simple view and complex view Equi join Inner Join Logical table in SQL Non Equi Join Oracle Outer Join PLSQL Postgres Self Join Simple View SQL SQL Joins SQL Views View Views in SQLHome...
So how do we know when to use INNER JOIN, and when to use the more complex variants like RIGHT JOIN and LEFT JOIN? Simply put, INNER JOIN should be used when we want to exclude all records that do not match both of the tables we're joining. Let's check out an example of this:...
A function is a set of statements that can be programmed in SQL. A function allows the user to program complex tasks like creating a view or creating a summary table. The functions can be stored in the database and used in query just like AVG, SUM, MIN, MAX provided by SQL. ...