BePPPower opened a new pull request, #16958:
URL: https://github.com/apache/doris/pull/16958
# Proposed changes
Issue Number: close #xxx
This pr do two things:
1. fix:
It use `column[0]` to judge class type in JdbcExecutor, but column[0]
may be null !
3. enhencement:
In the original logic, all fields in jdbc catalog table will be set
Nullable. Howerver, it is inefficient for nullable fields. Actually, we can
know if the fields in data source table is nullable throught jdbc. So we can
set the corresponding fields in doris jdbc catalog to nullable or not.
## Problem summary
Describe your changes.
## Checklist(Required)
* [ ] Does it affect the original behavior
* [ ] Has unit tests been added
* [ ] Has document been added or modified
* [ ] Does it need to update dependencies
* [ ] Is this PR support rollback (If NO, please explain WHY)
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[[email protected]](mailto:[email protected]) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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