PostgreSQL LN
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Postgresql LN
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
postgres=# SELECT LN(3);
ln
------------------
1.09861228866811
(1 row)
Example 2
postgres=# SELECT LN(90);
ln
------------------
4.49980967033027
(1 row)
