ln
description
Syntax
DOUBLE ln(DOUBLE x)
Returns the natural logarithm of x to base e.
:::tip
Another alias for this function is dlog1.
:::
example
mysql> select ln(1);
+---------+
| ln(1.0) |
+---------+
| 0 |
+---------+
mysql> select ln(e());
+---------+
| ln(e()) |
+---------+
| 1 |
+---------+
mysql> select ln(10);
+--------------------+
| ln(10.0) |
+--------------------+
| 2.3025850929940459 |
+--------------------+keywords
LN, DLOG1