Cannot use identity column key generation with ( TABLE_PER_CLASS )

Question

com.something.SuperClass:

@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public abstract class SuperClass implements Seria         


        

Answer 1

There is a SQL standard Compliance in between MySQL and PostgreSQL. PostgreSQL Postgres understands a good subset of SQL92/99 plus some object-oriented features to these subsets. Postgres is capable of handling complex routines and rules as declarative SQL queries, subqueries, views, multi-user support, transactions, query optimization, inheritance, and arrays. Does not support selecting data across different databases.

MySQL MySQL uses SQL92 as its foundation. Runs on countless platforms. Mysql can construct queries that can join tables from different databases. Supports both left and right outer joins using both ANSI and ODBC syntax. As of MySQL 4.1 from that release on, MySQL will handle subqueries. Views supported as of release 5.

For a detailed description please visit. http://www-css.fnal.gov/dsg/external/freeware/pgsql-vs-mysql.html