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The Oracle PL/SQL LOG Function [Return To Index]

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Term: LOG

Definition:
The Oracle PL/SQL LOG function returns the logarithm of a number. It accepts two arguments where first represents the base and second is the input number.

Example Syntax:

LOG(x, y)

The example above reads as, "log base x of y."

Note that x must be an integer (and not equal to one or zero) and y must be a positive number.

The LOG function takes any numeric datatype or any nonnumeric datatype that can be implicitly converted to a numeric datatype. If either argument is BINARY_FLOAT or BINARY_DOUBLE, then the function returns BINARY_DOUBLE. Otherwise the function returns NUMBER.

Example Usage:

SELECT LOG(2,8) "Log" FROM DUAL;



Log

-----

3

Related Links:

Oracle Number Functions: LOG

Related Code Snippets:

Log database errors - Logs all database errors to a table. NOTE: DBA or CREATE ANY TRIGGER pri...
Natural logarithm - Returns the natural log of a number.
Logarithm to base - Returns the log of a number for any base.
Audit User Logins (User Login Trigger) - Audit user logins and enable SQL tracing for selected use...

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