This function is used to return the length of a specified string in bytes.
Similar function: length. The length function is used to return the length of a string and return a value of the BIGINT type.
Syntax
lengthb(string <str>)
Parameters
Parameter |
Mandatory |
Type |
Description |
|---|---|---|---|
str |
Yes |
STRING |
Input string |
Return Values
The return value is of the STRING type.
- If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
- If the value of str is NULL, NULL is returned.
Example Code
The value 5 is returned.
select lengthb('hello');
The value NULL is returned.
select lengthb(null);