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## What are the built in functions in SQL?

In SQL a built-in function is **a piece for programming that takes zero or more inputs and returns a value**. An example of a built-in function is ABS(), which when given a value calculates the absolute (non-negative) value of the number.

## Which of the following are SQL functions?

**SQL Functions**

- AVG() – Returns the average value.
- COUNT() – Returns the number of rows.
- FIRST() – Returns the first value.
- LAST() – Returns the last value.
- MAX() – Returns the largest value.
- MIN() – Returns the smallest value.
- SUM() – Returns the sum.

## How many types of built in functions are there in SQL?

SQL function

There are **two types** of SQL functions, aggregate functions, and scalar(non-aggregate) functions. Aggregate functions operate on many records and produce a summary, works with GROUP BY whereas non-aggregate functions operate on each record independently.

## 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.

## What are the SQL functions?

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 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 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.

## Which is a type of built in function?

The ACOS function returns the arc cosine of a specified number. The **ASIN function returns the arc sine** of a specified number. The ATAN function returns the arc tangent of a specified number.

## What is a built in method?

**A function which is already defined in a program or programming framework with a set of statements**, which together performs a task and it is called Build-in function. So users need not create this type of function and can use directly in their program or application.