|Oracle® OLAP DML Reference
11g Release 2 (11.2)
Part Number E17122-05
REGEXP_SUBSTR(source_char, pattern[, position[, occurrence[, match_parameter ]]])
The text expression for which the function searches.
The text expression for which the function searches. It is usually a text literal and can contain up to 512 bytes. The function interprets a period as a wildcard character that matches any character
A nonzero integer indicating the character of source_char where the function begins the search. When position is negative, then the function counts and searches backward from the end of string. The default value of position is
1, which means that the function begins searching at the first character of source_char.
An integer indicating which occurrence of pattern the function should search for. The value of occurrence must be positive. The default value of occurrence is
1, which means that the function searches for the first occurrence of pattern.
A text expression that lets you change the default matching behavior of the function. You can specify one or more of the values shown in the following table.
||Treat the source string as multiple lines. The function interprets
||A newline character is among the characters matched by a period (the wildcard character). By default, it is not.|
||Ignores whitespace characters.|
Example 8-67 Using REGEXP_SUBSTRING to search for a case-insensitive substring
The following statement
REGEXP_SUBSTR('7 W 96th St, New York, New York', 'new york', 10, 2, 'i')
starts searching at the tenth character and matches the second instance of New York in a case-insensitive match.