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## 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**

- look at the first digit after the decimal point if rounding to one decimal place or the second digit for two decimal places.
- draw a vertical line to the right of the place value digit that is required.
- look at the next digit.
- if it’s 5 or more, increase the previous digit by one.

## 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.

## 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**

- 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: …
- SQL COUNT(*) Syntax. The COUNT(*) function returns the number of records in a table: …
- SQL COUNT(DISTINCT column_name) Syntax.