This pull request introduces significant improvements to the handling of
the `Replace` and `Save` operations for multiple database drivers,
especially for MSSQL and PostgreSQL. The changes ensure that these
operations now auto-detect primary keys when conflict columns are not
explicitly provided, improving usability and aligning behavior across
drivers. Additionally, the pull request updates related tests to reflect
these enhancements and includes some minor documentation and code
cleanup.
**Key changes:**
### Enhanced Replace/Save Logic for Database Drivers
* **MSSQL Driver:**
- `Replace` and `Save` operations now auto-detect primary keys if
`OnConflict` is not specified, using the `MERGE` statement for upsert
functionality. If no primary key is found in the data, a detailed error
is returned.
[[1]](diffhunk://#diff-87815aa559a927e2de09bd05148f9841dfc06a1b5f3ecc5e3d5fcb80323a87f8L23-R61)
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- Updated tests to verify that `Replace` correctly updates or inserts
records, and that missing conflict columns are properly handled.
[[1]](diffhunk://#diff-bdbde9d7d6ee14c795343767b414740c4396f4dd3e97788b1f9d4e615405a42dL141-R151)
[[2]](diffhunk://#diff-26338e93e473300b1313936eb0f6826546473793442f24715fa294b595f7a805L2661-R2707)
* **PostgreSQL Driver:**
- Similar to MSSQL, `Replace` and `Save` now auto-detect primary keys
for conflict resolution if `OnConflict` is not set, and treat `Replace`
as a `Save` operation.
- Adjusted tests to ensure `Save` and `Replace` work as expected,
including verifying data replacement and insertion.
[[1]](diffhunk://#diff-c22703c37ebb6836c332f7cd2ada570577ba4564fe39886db02f7c2d0e7a2048L93-R93)
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* **DM Driver:**
- Improved conflict detection: now checks that at least one primary key
exists in the provided data when `OnConflict` is not specified, and
provides clearer error messages.
- Refactored to use the core method for primary key detection and
removed redundant code.
### Minor Improvements and Documentation
* Added clarifying comments to `DoInsert` methods for ClickHouse, DM,
MSSQL, Oracle, and PostgreSQL drivers, specifying that the input list
must have at least one validated record.
[[1]](diffhunk://#diff-f2e003895041ed3c52b91bb8c270696adc3528d77c39d2f7137af3396267444cR19)
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* Minor code and comment cleanups, including improved formatting and
error handling.
[[1]](diffhunk://#diff-f61dac3fcfd5df4a3936cd8743499c8c0fc45f4f5d0f5398ed84a0cb1603202cR37)
[[2]](diffhunk://#diff-f61dac3fcfd5df4a3936cd8743499c8c0fc45f4f5d0f5398ed84a0cb1603202cL96-R98)
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### Workflow and Documentation Updates
* Updated example Docker commands in the CI workflow for consistency and
clarity.
[[1]](diffhunk://#diff-a1a3cb9bdeb5541d148091d973cf266aa3b317e6415a86630e816cbe27cf8b9cL57-R57)
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* Removed outdated note about `Replace` support from the SQLite driver
documentation.
These changes improve the consistency, reliability, and developer
experience when performing upsert operations across different database
backends.
---------
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Lance Add <1196661499@qq.com>
