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LOG()

Available in: DSQL, PSQL

Added in: 2.1

Changed in: 2.5

Description

Returns the x-based logarithm of y.

Result type: DOUBLE PRECISION

Syntax

 LOG (x, y)

• If either argument is 0 or below, an error is raised. (Before 2.5, this would result in NaN, ±INF or 0, depending on the exact values of the arguments.)
• If both arguments are 1, NaN is returned.
• If x = 1 and y < 1, -INF is returned.
• If x = 1 and y > 1, INF is returned.

Important: If the external function LOG is declared in your database, it will override the internal function. To make the internal function available, DROP or ALTER the external function (UDF).

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