select cast(3.40282e37 as char) result is changed in master #53248
Description
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
in master:
$ select cast(3.40282e37 as char);
+--------------------------+
| cast(3.40282e37 as char) |
+--------------------------+
| 3.40282e37 |
+--------------------------+
in 8.0.0
$ select cast(3.40282e37 as char);
+----------------------------------------+
| cast(3.40282e37 as char) |
+----------------------------------------+
| 34028200000000000000000000000000000000 |
+----------------------------------------+
2. What did you expect to see? (Required)
the result should be same
3. What did you see instead (Required)
result is changed
4. What is your TiDB version? (Required)
Git Commit Hash: 4fe70da