Oracle/PLSQL: LENGTH Function
This Oracle tutorial explains how to use the Oracle/PLSQL LENGTH function with syntax and examples.
Description
The Oracle/PLSQL LENGTH function returns the length of the specified string.
Syntax
The syntax for the LENGTH function in Oracle/PLSQL is:
LENGTH( string1 )
Parameters or Arguments
- string1
- The string to return the length for.
Note: If string1 is NULL, then the LENGTH function will return NULL.
Applies To
The LENGTH function can be used in the following versions of Oracle/PLSQL:
- Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i, Oracle 8i
Example
Let's look at some Oracle LENGTH function examples and explore how to use the LENGTH function in Oracle/PLSQL.
For example:
LENGTH(NULL)
Result: NULL
LENGTH('')
Result: NULL
LENGTH(' ')
Result: 1
LENGTH('Tech on the Net')
Result: 15
LENGTH('Tech on the Net ')
Result: 16