Getting a nested connectionWhen you are executing a method within SQL, that method might need
to reuse the current connection to the database in order to execute more SQL
statements. Such a connection is called a nested connection. The way
for a method to get a nested connection is to issue a connection request using
the connection URL.Getting a nested connectionusing database
connection URL attributeNested connectionsgettingNested connectionsgettingjdbc:default:connection
URL attributes are not supported as part of this connection URL. Any URL
attributes specified in a Properties object, user name, or password that are
passed to a java.sql.DriverManager.getConnection() call will be ignored.