Mryange opened a new pull request, #49127:
URL: https://github.com/apache/doris/pull/49127
### What problem does this PR solve?
The url_encode function previously performed a modulus operation on a signed
number. Converting it to an unsigned number will fix the issue.
```
before
mysql> select url_encode('编码');
+----------------------+
| url_encode('编码') |
+----------------------+
| %5.%23%0-%5.%10%/( |
+----------------------+
now
mysql> select url_encode('编码');
+----------------------+
| url_encode('编码') |
+----------------------+
| %E7%BC%96%E7%A0%81 |
+----------------------+
```
The strright function did not calculate the length according to the number
of UTF-8 characters.
```
before
mysql> select strright("你好世界",5);
+----------------------------+
| strright("你好世界",5) |
+----------------------------+
| |
+----------------------------+
now
mysql> select strright("你好世界",5);
+----------------------------+
| strright("你好世界",5) |
+----------------------------+
| 你好世界 |
+----------------------------+
```
he case of inputting a UTF-8 character was not considered.
```
mysql> select append_trailing_char_if_absent('中文', '文');
+-------------------------------------------------+
| append_trailing_char_if_absent('中文', '文') |
+-------------------------------------------------+
| NULL |
+-------------------------------------------------+
now
mysql> select append_trailing_char_if_absent('中文', '文');
+-------------------------------------------------+
| append_trailing_char_if_absent('中文', '文') |
+-------------------------------------------------+
| 中文 |
+-------------------------------------------------+
```
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] 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.
- [ ] 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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