AcKing-Sam commented on PR #32518:
URL: https://github.com/apache/doris/pull/32518#issuecomment-2022288989
@zhiqiang-hhhh
Hi, I wonder what is the correct answer of this sql:
`select cast(a as decimal(30, 4)) from (select cast("9999-12-31
23:59:59.999999" as datetime(6)) a) t1;`
For MYSQL, the answer is:
```sql
+---------------------------+
| cast(a as decimal(30, 4)) |
+---------------------------+
| 99991231235960.0000 |
+---------------------------+
```
For my implementation, it is:
```sql
+-----------------------------+
| cast(a as DECIMALV3(30, 4)) |
+-----------------------------+
| 99991231235959.9999 |
+-----------------------------+
1 row in set (0.02 sec)
```
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