Power Database Fields
Power Database Fields is a Jira app which enables you to associate a value retrieved from an external database to a ticket in Jira.
You can execute any types of queries to the database. When data is retrieved, you select it from a set of results as a select list or autocomplete box. Also, each database custom field can have one or more child database custom fields associated, whose values are filled automatically when a value is selected for the database custom field.
Starting with version 1.1 for JIRA 4.x and from 2.1 for JIRA 5.x, the app also provides a new custom field type: Data Table Custom Field that displays information from a configured data source (a database or a SIL script) in a tabular fashion.
From version 1.1.4 / 2.1.4 you can select multiple values from database in the select list, as well as in autocomplete (Jira style).