Account.executeUpdate("delete Book b where b.pages > 100")
Account.executeUpdate("delete Book b where b.title like ?",
                      ['Groovy In Action'])
Account.executeUpdate("delete Book b where b.author=?",
                      [Author.load(1)])
Account.executeUpdate("update Book b set b.title='Groovy In Action'" +
                      "where b.title='GINA'")
Account.executeUpdate("update Book b set b.title=:newTitle " +
                      "where b.title=:oldTitle",
                      [newTitle: 'Groovy In Action', oldTitle: 'GINA'])executeUpdate
Purpose
Updates the database with DML-style operations
Examples
Description
GORM does not provide a deleteAll method as deleting data must be done with caution. To delete data you can use executeUpdate. The basic syntax is:
Book.executeUpdate(String query)
Book.executeUpdate(String query, List positionalParams)
Book.executeUpdate(String query, Map namedParams)Parameters:
- 
query- An HQL query with DML-style operations
- 
positionalParams- AListof parameters for a positional parameterized HQL query
- 
namedParams- AMapof parameters for a named parameterized HQL query