spark-instrumented-optimizer/sql/core
Prashant Sharma 8cae7f88b0 [SPARK-33095][SQL] Support ALTER TABLE in JDBC v2 Table Catalog: add, update type and nullability of columns (MySQL dialect)
### What changes were proposed in this pull request?

Override the default SQL strings for:
ALTER TABLE UPDATE COLUMN TYPE
ALTER TABLE UPDATE COLUMN NULLABILITY
in the following MySQL JDBC dialect according to official documentation.
Write MySQL integration tests for JDBC.

### Why are the changes needed?
Improved code coverage and support mysql dialect for jdbc.

### Does this PR introduce _any_ user-facing change?

Yes, Support ALTER TABLE in JDBC v2 Table Catalog: add, update type and nullability of columns (MySQL dialect)

### How was this patch tested?

Added tests.

Closes #30025 from ScrapCodes/mysql-dialect.

Authored-by: Prashant Sharma <prashsh1@in.ibm.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2020-10-22 13:51:42 +00:00
..
benchmarks [SPARK-33160][SQL][FOLLOWUP] Update benchmarks of INT96 type rebasing 2020-10-22 10:03:41 +09:00
src [SPARK-33095][SQL] Support ALTER TABLE in JDBC v2 Table Catalog: add, update type and nullability of columns (MySQL dialect) 2020-10-22 13:51:42 +00:00
pom.xml [SPARK-33107][BUILD][FOLLOW-UP] Remove com.twitter:parquet-hadoop-bundle:1.6.0 and orc.classifier 2020-10-11 21:54:56 -07:00