yiguolei commented on code in PR #2568: URL: https://github.com/apache/doris-website/pull/2568#discussion_r2184296247
########## docs/sql-manual/sql-functions/scalar-functions/string-functions/regexp-extract-all.md: ########## @@ -40,41 +40,151 @@ REGEXP_EXTRACT_ALL(<str>, <pattern>) | Parameter | Description | | -- | -- | -| `<str>` | The column need to do regular matching.| -| `<pattern>` | Target pattern.| +| `<str>` | This parameter is of type String. It represents the input string on which the regular expression matching will be performed. This can be a literal string value or a reference to a column in a table that contains string data.| +| `<pattern>` | This parameter is also of type String. It specifies the regular expression pattern that will be used to match against the input string <str>. The pattern can include various regular expression constructs such as character classes, quantifiers, and sub - patterns.| ## Return value -Value after extraction. It is `String` type. +The function returns an array of strings that represent the parts of the input string that match the first sub - pattern of the specified regular expression. The return type is an array of String values. If no matches are found, or if the pattern has no sub - patterns, an empty array is returned. Review Comment: 输入输入为null 怎么办？ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
