Huaxin Gao af3e2f7d58 [SPARK-33081][SQL] Support ALTER TABLE in JDBC v2 Table Catalog: update type and nullability of columns (DB2 dialect) ... ### What changes were proposed in this pull request? - Override the default SQL strings in the DB2 Dialect for: * ALTER TABLE UPDATE COLUMN TYPE * ALTER TABLE UPDATE COLUMN NULLABILITY - Add new docker integration test suite jdbc/v2/DB2IntegrationSuite.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 DB2 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 *.DB2IntegrationSuite" Closes #29972 from huaxingao/db2_docker. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>		2020-10-13 12:57:54 +00:00
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benchmarks	[SPARK-30413][SQL] Avoid WrappedArray roundtrip in GenericArrayData constructor, plus related optimization in ParquetMapConverter	2020-01-19 19:12:19 -08:00
src	[SPARK-33081][SQL] Support ALTER TABLE in JDBC v2 Table Catalog: update type and nullability of columns (DB2 dialect)	2020-10-13 12:57:54 +00:00
pom.xml	[SPARK-32312][SQL][PYTHON][TEST-JAVA11] Upgrade Apache Arrow to version 1.0.1	2020-09-10 14:16:19 +09:00