Introduction In this article, we are going to see how a relational database executes SQL statements and prepared statements.
Introduction The Hibernate forum is a never-ending source of inspiration when it comes to solving real-life problems you might bump into when developing an enterprise application. For instance, this post asks about a JPQL query which should fetch a given parent entity when all its child entities match the given filtering criteria.
Introduction Vladimir Sitnikov has been working on many optimizations to the PostgreSQL JDBC Driver, and one of these is the reWriteBatchedInserts configuration property which he recently told me about. In this article, you will see how the reWriteBatchedInserts JDBC configuration property works in PostgreSQL, and how it allows you to rewrite INSERT statements into a multi-VALUE INSERT.
Introduction Hibernate custom Types allow you to map all sorts of database specific column types, like IP address, JSON columns, bit sets or SQL arrays. There are two ways to define a custom Hibernate Type: the UserType interface Java and SQL descriptors The latter option is preferred since it allows you to better split the Java-to-JDBC and the JDBC-to-SQL type handling. In this article, we are going to see how you can map SQL arrays to their Java counterpart.