EmmyMiao87 opened a new pull request #6745: URL: https://github.com/apache/incubator-doris/pull/6745
## Proposed changes The syntax: ``` select k1, e1 from test lateral view explode_split(k1, ",") tmp as e1; ``` ```explode_split``` is a special function of doris, which is used to separate the string column according to the specified split string, and then convert the row to column. This is a conforming function of string separation + table function, and its behavior is equivalent to explode in hive ```explode(split(string, string))``` The implement: A tablefunction operator is added to the implementation to handle the syntax of the lateral view separately. The query plan is following: ``` MySQL [test]> explain select k1, e1 from test_explode lateral view explode_split (k2, ",") tmp as e1; +---------------------------------------------------------------------------+ | Explain String | +---------------------------------------------------------------------------+ | PLAN FRAGMENT 0 | | OUTPUT EXPRS:`k1` | `e1` | | | | RESULT SINK | | | | 1:TABLE FUNCTION NODE | | | table function: explode_split(`k2`, ',') | | | | | 0:OlapScanNode | | TABLE: test_explode | +---------------------------------------------------------------------------+ ``` ## Types of changes What types of changes does your code introduce to Doris? _Put an `x` in the boxes that apply_ - [ ] Bugfix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] Documentation Update (if none of the other choices apply) WIP - [ ] Code refactor (Modify the code structure, format the code, etc...) - [ ] Optimization. Including functional usability improvements and performance improvements. - [ ] Dependency. Such as changes related to third-party components. - [ ] Other. ## Checklist _Put an `x` in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code._ - [x] I have created an issue on (Fix #ISSUE) and described the bug/feature there in detail - [x] Compiling and unit tests pass locally with my changes - [x] I have added tests that prove my fix is effective or that my feature works - [ ] If these changes need document changes, I have updated the document WIP - [ ] Any dependent changes have been merged ## Further comments This only the FE part of lateral view, so this is not a functions that can be used directly. -- 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: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
