Add support for upsert with batching #4344

Job	Run time
Run examples in 'session-example' on PostgreSQL	2m 4s
Run examples in 'session-example' on MySQL	1m 59s
Test with MySQL	3m 13s
Test with CockroachDB	3m 14s
Run examples in 'native-sql-example' on PostgreSQL	1m 57s
Test with MariaDB	3m 14s
Test with Java 24-ea	2m 56s
Test with Java 20	3m 11s
Test with Java 25-ea	3m 1s
Test with PostgreSQL	2m 55s
Test with MSSQLServer	3m 11s
Test with Oracle	3m 11s
Test with Java 23	3m 0s
Test with Java 17	3m 5s
Test with Db2	3m 13s
Test with Java 21	2m 58s
	46m 22s

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