How rounding differs for exact and approximate values: : ROUND « Math Numeric Functions « MySQL Tutorial

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MySQL Tutorial » Math Numeric Functions » ROUND

21. 31. 7. How rounding differs for exact and approximate values:


mysql>

mysql> SELECT ROUND(2.5), ROUND(25E-1);

+------------+--------------+

| ROUND(2.5) | ROUND(25E-1) |

+------------+--------------+

|          3 |            2 |

+------------+--------------+

1 row in set (0.00 sec)



mysql>

21. 31. ROUND
	21. 31. 1.	ROUND(X), ROUND(X,D) rounds the argument X to D decimal places.
	21. 31. 2.	ROUND(1.298, 1)
	21. 31. 3.	ROUND(1.298, 0)
	21. 31. 4.	ROUND(23.298, -1)
	21. 31. 5.	ROUND(150.000,2)/ROUND(150,2)
	21. 31. 6.	Rounding value in a column
	21. 31. 7.	How rounding differs for exact and approximate values:

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