Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind SQL Server DATALENGTH() 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.
___('ExampleSite.com');3Order
Put the learning moves in the order that makes the concept easiest to apply.
The DATALENGTH() function returns the number of bytes used to represent an expression.
Definition and Usage
SQL Server DATALENGTH() Function
Example
SELECT
DATALENGTH('ExampleSite.com');Definition and Usage
The DATALENGTH() function returns the number of bytes used to represent an expression.
Note
The DATALENGTH() function counts both leading and trailing spaces when calculating the length of the expression.
Tip
Also see the LEN() function.
Syntax
DATALENGTH(
expression
)Parameter Values
| Parameter | Description |
|---|---|
| expression | Required. The data type to return the length for. If expression is NULL, it returns NULL |
Technical Details
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |
|---|