December 2002
Intermediate to advanced
928 pages
85h 29m
English
SUBSTR (string,m[,n])
Searches string and returns the substring that is n characters long, beginning in postion m offset from the left end of the string. SUBSTR can take the following forms:
Uses standard character set.
Uses input character set.
Uses Unicode complete characters (new with Oracle9i).
Uses UCS2 codepoints (new with Oracle9i).
Uses UCS4 codepoints (new with Oracle9i).
The offset parameter for the SUBSTR function is 1-based, meaning the first is referred to as 1, the second as 2, and so on.