SUBSTRB |
The SUBSTRB function returns a portion of string, beginning at a specified byte position, and a specified number of bytes long.
To retrieve a portion of string based on characters, use SUBSTR.
Return Value
The return value is the same data type as string.
Syntax
SUBSTRB (string , position [, substring_length])
Arguments
A text expression that is the base string from which the substring is created.
The position at which the first byte of the returned string begins.
When position is 0 (zero), then it is treated as 1.
When position is positive, then the function counts from the beginning of string to find the first byte.
When position is negative, then the function counts backward from the end of string.
The number of bytes in the returned string. When you do not specify a value for this argument, then the function returns all bytes to the end of string. When you specify a value that is less than 1, the function returns NA.
Examples
Assume a double-byte database character set.
SHOW SUBSTRB('abcdefg',5,4.2)
cd