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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
..
avro [SPARK-33169][SQL][TESTS] Check propagation of datasource options to underlying file system for built-in file-based datasources 2020-10-19 17:47:49 +09:00
docker [SPARK-32353][TEST] Update docker/spark-test and clean up unused stuff 2020-07-17 12:05:45 -07:00
docker-integration-tests [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
kafka-0-10 [SPARK-32873][BUILD] Fix code which causes error when build with sbt and Scala 2.13 2020-09-14 15:34:58 +09:00
kafka-0-10-assembly [SPARK-33212][BUILD] Move to shaded clients for Hadoop 3.x profile 2020-10-22 03:21:34 +00:00
kafka-0-10-sql [SPARK-33212][BUILD] Move to shaded clients for Hadoop 3.x profile 2020-10-22 03:21:34 +00:00
kafka-0-10-token-provider [SPARK-33212][BUILD] Move to shaded clients for Hadoop 3.x profile 2020-10-22 03:21:34 +00:00
kinesis-asl [SPARK-33079][TESTS] Replace the existing Maven job for Scala 2.13 in Github Actions with SBT job 2020-10-15 20:51:20 +09:00
kinesis-asl-assembly [SPARK-33212][BUILD] Move to shaded clients for Hadoop 3.x profile 2020-10-22 03:21:34 +00:00
spark-ganglia-lgpl [SPARK-30950][BUILD] Setting version to 3.1.0-SNAPSHOT 2020-02-25 19:44:31 -08:00