What does round mean in sql

ROUND meaning in SQL

In SQL, the ROUND function is used to round a number to a specified number of decimal places. This function rounds a number according to the specified number of digits and returns the result as output.

Syntax

<code>ROUND(number, decimal_places)</code>

Where:

• number: The number to be rounded.
• decimal_places: Specifies the number of decimal places to round to.

Example

To round the number 123.4567 to two decimal places, you can use the following query:

<code>SELECT ROUND(123.4567, 2);</code>

Output:

<code>123.46</code>

Rounding rules

ROUND function follows standard rounding rules:

• If the number after the rounding digit is greater than or equal to 5, then round The position increases by 1.
• If the number following the rounding digit is less than 5, the rounding digit remains unchanged.

Note

• If the specified number is NULL, the ROUND function returns NULL.
• If the specified decimal_places is a negative number, the ROUND function returns the input number itself (unrounded).
• If the specified decimal_places is greater than the number of decimal places of the input number, the ROUND function returns the input number directly.

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