**[Jens Schauder](https://jira.spring.io/secure/ViewProfile.jspa?name=schauder)** opened **[DATAJDBC-218](https://jira.spring.io/browse/DATAJDBC-218?redirect=false)** and commented List and Map valued attributes need a key column to store the key/index of the collection. The new attribute of the `@Column` annotation should allow customizing the column name used for this --- **Referenced from:** pull request https://github.com/spring-projects/spring-data-jdbc/pull/83