https://github.com/apache/doris/pull/36497
before
```
mysql [test]>select count(ltrim(str,"1")) from stringDb2;
+------------------------+
| count(ltrim(str, '1')) |
+------------------------+
| 64000000 |
+------------------------+
1 row in set (7.79 sec)
```
now
```
mysql [test]>select count(ltrim(str,"1")) from stringDb2;
+------------------------+
| count(ltrim(str, '1')) |
+------------------------+
| 64000000 |
+------------------------+
1 row in set (0.73 sec)
```
## Proposed changes
Issue Number: close #xxx
<!--Describe your changes.-->
cc6ff12097