Beginner

299. LOG Function

Learn how logarithmic calculations can be performed in SQL.

📘 Lesson 299 of 728 ⏱ 10 min 🎯 Advanced

The LOG function calculates a logarithm of a numeric value. The exact syntax and supported base options vary between database systems.

Logarithms are useful in statistical analysis, financial modeling, data transformation, and calculations involving exponential relationships.

Calculate the natural logarithm of a positive numeric value.

SQL 
SELECT
    LOG(SalesAmount) AS LogSales
FROM Sales
WHERE SalesAmount > 0;

LOG can be used in statistical models, financial analysis, scientific calculations, and data transformations.

  • LOG calculates a logarithm.
  • Input values normally need to be positive.
  • Database syntax can vary.
  • Different databases may use different default bases.
  • It is useful in analytical calculations.
What does LOG do?

LOG calculates the logarithm of a numeric value.

Why are logarithms useful in data analysis?

Logarithms can help transform skewed data and model relationships involving exponential growth.

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