Mysql LN
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MySQL LN Function
This function calculates the natural logarithm of X, the base-e logrithnm of X. When X is less than or equal to 0, this function returns NULL.
Syntax LN
X is a number.
LN(X);
Example 1
mysql> SELECT LN(3); +------------------+ | LN(3) | +------------------+ | 1.09861228866811 | +------------------+ 1 row in set (0.00 sec)
Example 2
mysql> SELECT LN(90); +------------------+ | LN(90) | +------------------+ | 4.49980967033027 | +------------------+ 1 row in set (0.00 sec)
