Getting started with hibernate Performance tuning Custom Naming Strategy Caching Enable/Disable SQL log Criterias and Projections Hibernate Entity Relationships using Annotations Association Mappings between Entities Hibernate and JPA Mapping associations Native SQL Queries Lazy Loading vs Eager Loading HQL Fetching in hibernate

HQL

Remarks:

The main thing to remember when using hql is the use the class name and field names instead of the table and column names we are used to in SQL.

Selecting a whole table

hql = "From EntityName";

Select specific columns

hql = "Select id, name From Employee";

Include a Where clause

hql = "From Employee where id = 22";

Join

hql = "From Author a, Book b Where a.id = book.author";

Contributors

Topic Id: 9388

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