Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind SQL Server LOG() Function?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ LOG(2);3Order
Put the learning moves in the order that makes the concept easiest to apply.
The LOG() function returns the natural logarithm of a specified number , or the logarithm of the number to the specified base .
Definition and Usage
SQL Server LOG() Function
Example
SELECT LOG(2);Definition and Usage
The LOG() function returns the natural logarithm of a specified number , or the logarithm of the number to the specified base .
From SQL Server 2012, you can also change the base of the logarithm to another value by using the optional base parameter.
Note
Also look at the EXP() function.
Syntax
LOG(
number, base
) -- Syntax for SQL ServerOR
LOG(
number
) -- Syntax for Azure SQL Database, Azure SQL Data Warehouse, Parallel Data WarehouseParameter Values
| Parameter | Description |
|---|---|
| number | Required. The number to return the natural logarithm of. Must be greater than 0 |
| base | Optional. The base the natural logarithm is to be calculated with. Must be greater than 1 |
Technical Details
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |
|---|