oracle function ln (y)

[Function] returns the logarithm to the base e y (e mathematical constant)

Parameters y, numeric expression (condition y> 0)

[Back] Digital

 

[Example]

  select exp(3),exp(-3),ln(20.0855369),ln(0.049787068) from dual;

Returns: 20.0855369, 0.049787068, 3, -3

 

Close] [log (x, y)

X is returned to the bottom of the logarithm of y

 

[Instead] exp (y)

E returned power of y

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Origin www.cnblogs.com/fanweisheng/p/11120131.html