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Search operation can be performed based on main database custom fields, as well as on child database custom fields.
Custom fields can be searched, but note that they can be added using the 'More' button when appropriate. That is:
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All issues containing the searched value for that database custom field will be displayed in the right part of the search panel, as in the screenshot above.
Advanced search
We also support advanced search in Power Database Fields. You can use "=", "in" operators and so on.
For instance, you have a DBI database custom field with a "10000" id, you can search by using either the custom field name (DBI) or the id (cf[10000]). If you want to search issues for which DBI has "dbi_value" value for example, then the JQL will be:
DBI = dbi_value
or
cf[10000] = dbi_value
If you want to search issues for which DBI has value "dbi_value" or "dbi_value2" for example, you ca use the "in" operator like this:
DBI in (dbi_value, dbi_value2)