The function in SQL to determine the length of a string is LEN(), which is used to count the number of characters in a string (excluding spaces). Other similar functions include: 2. CHAR_LENGTH(): case-sensitive; 3. LENGTH(): only available in MySQL.
String length function in SQL
Used in SQL (Structured Query Language) to determine the length of a string The function is LEN(). It can be used to get the number of characters in a string.
Syntax:
<code>LEN(string)</code>
Parameters:
- string: To determine its length String.
Return value:
- The number of characters in the string (excluding spaces).
Example:
The following query uses the LEN() function to get the length of the string "Hello World":
<code>SELECT LEN('Hello World');</code>
This will return Result:
<code>11</code>
Other notes:
- LEN() function is valid for both Unicode strings and non-Unicode strings.
- For an empty string, the LEN() function returns 0.
- LEN() function is not case sensitive.
Similar functions:
There are other similar string functions in SQL that can be used to determine the string length:
- CHAR_LENGTH(): Similar to the LEN() function, but it is case-sensitive.
- LENGTH(): Same as the LEN() function, but only for MySQL.
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