2,367
The REGEXP_SUBSTR function, much like the SUBSTR function, extracts part of a string
Syntax:
REGEXP_SUBSTR(source_string, pattern[, position [, occurrence[, match_parameter]]])
Example:
In the following SQL query, the string that matches the pattern , [^,]*, is returned. The regular expression searches for a comma followed by a space; then zero or more characters that are not commas, as indicated by [^,]*; and lastly looks for another comma. The pattern will look somewhat similar to a comma-separated values string.
Expand|Select|Wrap|Line Numbers
- SELECT REGEXP_SUBSTR('first field, second field , third field',
- ', [^,]*,') reg_substr
- FROM dual
- REG_SUBSTR
- ------------------
- , second field ,
