# How round function works in SQL?

Contents

## How do you round a number in SQL?

In SQL, you round up to the nearest integer using the CEIL or CEILING function, depending on whether you’re using SQL Server, Oracle, MySQL or PostgreSQL.

## How do you round to 2 decimal places in SQL Server?

Select Convert(Numeric(38, 2), Minutes/60.0) from …. MySQL: Select Convert(Minutes/60.0, Decimal(65, 2)) from …. The Cast function is a wrapper for the Convert function.

## What is round in SQL?

In SQL Server (Transact-SQL), the ROUND function returns a number rounded to a certain number of decimal places.

## How do I round a column in SQL?

If you’d like to round a floating-point number to a specific number of decimal places in SQL, use the ROUND function. The first argument of this function is the column whose values you want to round; the second argument is optional and denotes the number of places to which you want to round.

## How do you round to 2 decimal places?

Rounding to decimal places

1. look at the first digit after the decimal point if rounding to one decimal place or the second digit for two decimal places.
2. draw a vertical line to the right of the place value digit that is required.
3. look at the next digit.
4. if it’s 5 or more, increase the previous digit by one.
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## How do you set decimal places in SQL?

Generally you can define the precision of a number in SQL by defining it with parameters. For most cases this will be NUMERIC(10,2) or Decimal(10,2) – will define a column as a Number with 10 total digits with a precision of 2 (decimal places). It can also be declared as DECIMAL(10, 2).

## How do I reduce decimal places in SQL?

The SQL AVG() function returns the average value with default decimal places. The CAST() is used to increase or decrease the decimal places of a value. The CAST() function is much better at preserving the decimal places when converting decimal and numeric data types.

## 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 triggers SQL?

A SQL trigger is a database object which fires when an event occurs in a database. We can execute a SQL query that will “do something” in a database when a change occurs on a database table such as a record is inserted or updated or deleted. For example, a trigger can be set on a record insert in a database table.

## 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.

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## Why round () is used in SQL?

This function is used to round off a specified number to a specified decimal places. This function accepts only all type of numbers i.e., positive, negative, zero. This function accepts fraction numbers.

## What is Substr SQL?

SUBSTR: Extracting a Substring From a String Value (SQL)

The SUBSTR function returns a substring of a character value. You specify the start position of the substring within the value. … If the specified length value is longer than the input string, the result is the full input string.

## How do I count in SQL?

SQL COUNT() Function

1. SQL COUNT(column_name) Syntax. The COUNT(column_name) function returns the number of values (NULL values will not be counted) of the specified column: …
2. SQL COUNT(*) Syntax. The COUNT(*) function returns the number of records in a table: …
3. SQL COUNT(DISTINCT column_name) Syntax.