What are different types of SQL functions give example of each type?

What are the different types of SQL functions?

Categories of SQL Functions

  • Single row function: Single row functions are those functions which return a single result row for each row of queried table or view. …
  • Aggregate function: …
  • Analytic function: …
  • Model Functions: …
  • User defined function: …
  • Scalar functions:

What are different types of functions in SQL and explain with suitable examples?

Aggregate SQL Functions

Function Description
SUM() Used to return the sum of a group of values.
COUNT() Returns the number of rows either based on a condition, or without a condition.
AVG() Used to calculate the average value of a numeric column.
MIN() This function returns the minimum value of a column.

What is difference between function and procedure?

Function is used to calculate something from a given input. Hence it got its name from Mathematics. While procedure is the set of commands, which are executed in a order.

What is difference between stored procedure and function?

The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.

IT IS INTERESTING:  Does SQL support and&?

What are SQL procedures?

What is a procedure in SQL? A procedure in SQL (often referred to as stored procedure), is a reusable unit that encapsulates the specific business logic of the application. A SQL procedure is a group of SQL statements and logic, compiled and stored together to perform a specific task.

WHAT IS function and procedure in SQL?

“A procedures or function is a group or set of SQL and PL/SQL statements that perform a specific task.” A function and procedure is a named PL/SQL Block which is similar . The major difference between a procedure and a function is, a function must always return a value, but a procedure may or may not return a value.

What is data integrity in SQL?

Data Integrity is used to maintain Accuracy and consistency of data in the Table. Data Integrity is used to maintain accuracy and consistency of data in a table.

Categories SQL