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MySQL | ROUND method

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Numeric
schedule Jul 1, 2022
Last updated
local_offer MySQL
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MySQL's ROUND(~) method returns the input argument rounded to the specified number of decimal places.

NOTE

A value with a fractional part of .5 or greater is rounded up to the next integer if positive or down to the next integer if negative.

Parameters

1. X | number

The number to perform the rounding on.

2. D | number | optional

The number of decimal places to round the input value to. Defaults to 0.

NOTE

This number can be negative to round to digits left of the decimal point. For example, D=-1 would round the number to the nearest tens.

Return value

The input number rounded to the specified number of decimal places.

Examples

To round to zero decimal places (default):

SELECT ROUND(-5.52);
+--------------+
| ROUND(-5.52) |
+--------------+
| -6 |
+--------------+

To round to 1 decimal place:

SELECT ROUND(-5.44, 1);
+-----------------+
| ROUND(-5.44, 1) |
+-----------------+
| -5.4 |
+-----------------+

To round to -1 decimal place (i.e. nearest tens value):

SELECT ROUND(123, -1);
+----------------+
| ROUND(123,-1) |
+----------------+
| 120 |
+----------------+
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Published by Arthur Yanagisawa
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