MaxGekk opened a new pull request #29912:
URL: https://github.com/apache/spark/pull/29912
### What changes were proposed in this pull request?
1. Override the default SQL strings in the Oracle Dialect for:
- ALTER TABLE ADD COLUMN
- ALTER TABLE UPDATE COLUMN TYPE
- ALTER TABLE UPDATE COLUMN NULLABILITY
2. Add new docker integration test suite
`jdbc/v2/OracleIntegrationSuite.scala`
### Why are the changes needed?
In SPARK-24907, we implemented JDBC v2 Table Catalog but it doesn't support
some `ALTER TABLE` at the moment. This PR supports Oracle specific `ALTER
TABLE`.
### Does this PR introduce _any_ user-facing change?
Yes
### How was this patch tested?
By running new integration test suite:
```
$ ./build/sbt -Pdocker-integration-tests "test-only *.OracleIntegrationSuite"
```
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