====== Groovy SQL (Database) ======
  * [[http://docs.groovy-lang.org/latest/html/api/groovy/sql/Sql.html|groovy.sql.Sql]]
  * [[http://groovy-lang.org/databases.html|Groovy Working with relational database]]

====== withInstance ======
  * close()를 할 필요가 없다.
<code groovy>
import groovy.sql.Sql

Sql.withInstance(URL, USERNAME, PASSWORD, JDBCDRIVER) { sql ->
  // code
}
</code>

====== 참고 ======
  * [[http://mrhaki.blogspot.com/2019/03/groovy-goodness-use-expanded-variables.html|Groovy Goodness: Use Expanded Variables in SQL GString Query - Messages from mrhaki]]
  * [[https://www.baeldung.com/jdbc-groovy|JDBC with Groovy]]