OK, I understand this is something very basic, I should understand. 

Maybe anybody can teach me the difference between:

mysql> select floor(23.49999999999999 + 0.5);
+--------------------------------+
| floor(23.49999999999999 + 0.5) |
+--------------------------------+
|                             23 |
+--------------------------------+

and 

mysql> select floor(23.499999999999999 + 0.5);
+---------------------------------+
| floor(23.499999999999999 + 0.5) |
+---------------------------------+
|                              24 |
+---------------------------------+

Why are there different results?




Have a nice thread,
Peter

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