zclllyybb opened a new pull request, #38385:
URL: https://github.com/apache/doris/pull/38385
## Proposed changes
Issue Number: close #xxx
```sql
create table str(
k0 varchar not null
)
DISTRIBUTED BY HASH(`k0`) BUCKETS auto
properties("replication_num" = "1");
insert into str select '2034-12-15 12:12:12' from numbers("number" =
"50000000");
set parallel_pipeline_task_num=1;
--- origin
mysql [test]>select count(cast(k0 as datetime)) from str;
+----------------------------------+
| count(cast(k0 as DATETIMEV2(0))) |
+----------------------------------+
| 50000000 |
+----------------------------------+
1 row in set (7.09 sec)
--- opt function and isspace
mysql [test]>select count(cast(k0 as datetime)) from str;
+----------------------------------+
| count(cast(k0 as DATETIMEV2(0))) |
+----------------------------------+
| 50000000 |
+----------------------------------+
1 row in set (5.28 sec)
--- and ispunct
mysql [test]>select count(cast(k0 as datetime)) from str;
+----------------------------------+
| count(cast(k0 as DATETIMEV2(0))) |
+----------------------------------+
| 50000000 |
+----------------------------------+
1 row in set (5.14 sec)
```
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