# How round works in SQL?

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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.

## 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 database?

The ROUND() function is used to round a numeric field to the number of decimals specified. Note: Many database systems do rounding differently than you might expect. … 5 is rounded to the nearest even integer. So, both 11.5 and 12.5 would be rounded to 12.

## What is round in SQL?

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

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## 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 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 I round up in Oracle SQL?

Oracle ROUND() function

1. If no integer is defined, then n is rounded to zero places.
2. If the integer specified is negative, then n is rounded off to the left of the decimal point.
3. If n is positive, then : ROUND(n, integer) = FLOOR(n * POWER(10, integer) + 0.5) * POWER(10, -integer)

## How do I round up in MySQL?

You can use ceil (ceiling). It only rounds up, so you’ll have to multiply with 10000, do the ceil and then divide the result again.

## 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 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.

## 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).

## What is cast in SQL?

The SQL CAST function converts the data type of an expression to the specified data type. CAST can convert the data type of expr when that data type is a standard data type or a subclass of a standard data type such as %Library. String , %Library.

## What is Floor in SQL?

In SQL Server (Transact-SQL), the FLOOR function returns the largest integer value that is equal to or less than a number.