linrrzqqq opened a new pull request, #56367:
URL: https://github.com/apache/doris/pull/56367
### What problem does this PR solve?
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
`MAKE_SET(bit, str1, str2...)`
Returns a set value (a string containing substrings separated by ,
characters) consisting of the strings that have the corresponding bit in bits
set. str1 corresponds to bit 0, str2 to bit 1, and so on. NULL values in str1,
str2, ... are not appended to the result.
```text
mysql> SELECT MAKE_SET(2, 'hello', 'goodbye', 'world');
+------------------------------------------+
| MAKE_SET(2, 'hello', 'goodbye', 'world') |
+------------------------------------------+
| goodbye |
+------------------------------------------+
mysql> SELECT MAKE_SET(4, 'a', 'b', NULL);
+-----------------------------+
| MAKE_SET(4, 'a', 'b', NULL) |
+-----------------------------+
| |
+-----------------------------+
mysql> SELECT MAKE_SET(NULL, 'a', 'b', 'c');
+-------------------------------+
| MAKE_SET(NULL, 'a', 'b', 'c') |
+-------------------------------+
| NULL |
+-------------------------------+
```
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [x] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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