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  1. REFERENCE
  2. SQL Reference
  3. SQL Functions
  4. Math

LOG

Returns the logarithm of the numeric input expression. If no base is specified, the natural log (ln) will be calculated.

Syntax

LOG(base_expression FLOAT, expression FLOAT) → DOUBLE

  • base_expression: The base to use.

  • expression: The value to calculate the log.

Examples

LOG example
SELECT LOG(20.5, 1.5)
-- 0.1342410830900514

LOG(base_expression DOUBLE, expression DOUBLE) → DOUBLE

  • base_expression: The base to use.

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(20.5, 1.5)
-- 0.1342410830900514

LOG(expression int64) → DOUBLE

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(10)
-- 2.302585092994046

LOG(base_expression int64, expression int64) → DOUBLE

  • base_expression: The base to use.

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(10, 2)
-- 0.30102999566398114

LOG(expression int32) → DOUBLE

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(10)
-- 2.302585092994046

LOG(base_expression int32, expression int32) → DOUBLE

  • base_expression: The base to use.

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(10, 2)
-- 0.30102999566398114

LOG(expression float) → DOUBLE

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(12.5)
-- 2.5257286443082556

LOG(expression double) → DOUBLE

  • expression: The value for which you want to calculate the log.

Examples

LOG example
SELECT LOG(12.5)
-- 2.5257286443082556

Usage Notes

If base_expression is 1. If base_expression expression is less than 0, NaN will be returned. If the expression input is 0, -Infinity is returned. If the expression input is less than 0, NaN will be returned.

Last updated 2 years ago

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