When migrating from Voyager to Alma, it is highly advisable to have holdings records (MFHDs) attached to bib records. Records without MFHDs may be excluded from some Alma workflows, and may display in undesirable and possibly confusing ways in Discovery interfaces.
Note that Alma will display records without holdings as not having any inventory. Records without inventory may be excluded from Alma workflows.
The following query, which can be run using Voyager's Prepackaged Access Reports, will list bibliographic records without MFHDs.
SELECT BIB_MASTER.BIB_ID, BIB_TEXT.NETWORK_NUMBER, BIB_MASTER.CREATE_DATE,
FROM (BIB_MASTER INNER JOIN BIB_TEXT ON BIB_MASTER.BIB_ID = BIB_TEXT.BIB_ID)
LEFT JOIN BIB_MFHD ON BIB_MASTER.BIB_ID = BIB_MFHD.BIB_ID
WHERE (((BIB_MFHD.BIB_ID) Is Null));
For other queries that may be useful, see my "Surviving Almanado: tips for a successful pre-implementation" presentation's Accompanying Materials.
If you need assistance in running custom SQL queries in Prepackaged Access Reports, consult the Voyager Customer Listserv.