PetarVasiljevic-DB

[SPARK-47424][SQL] Add getDatabaseCalendar method to the JdbcDialect

4

### What changes were proposed in this pull request? New dialect method that returns calendar that will be used in getTimestamp or setTimestamp in JdbcUtils.scala. By default, the return value...

[SPARK-52187][SQL] Introduce Join pushdown for DSv2

1

### What changes were proposed in this pull request? With this PR I am introducing the Join pushdown interface for DSv2 connectors and it's implementation for JDBC connectors. The interface...