SUBSTRING function returns a substring from string.
Syntax:
SUBSTRING(string, start_pos [, substring_len]) | SUBSTRING(string FROM start_pos [FOR substring_len])
Parameters:
| Parameter | Type | Value | Description | 
| string | String | Variable or expression | Original string | 
| start_pos | Integer | Variable or expression | Start position of substring (starts from 1) | 
| substring_len | Integer | Variable or expression | Length of substring | 
Notes:
Return Type:
String.
Example:
SUBSTRING('Remark', 3); 
Result: 'mark'
Example:
SUBSTRING('Remark', 3, 3); 
Result: 'mar'
Compatibility: IBM DB2, Teradata and Microsoft SQL Server.
See also:
Version: