https://www.beekeeperstudio.io/ja/blog/tt-dbcc-cleantable-space-sql-server-drop-column/
DBCC CLEANTABLE: Reclaim space for dropped columns | Beekeeper Studio
Mar 17, 2023 - DBCC CLEANTABLE reclaims table space after a column is dropped from the database using the ALTER TABLE DROP COLUMN statement. DBCC CLEANTABLE works for...
dbccreclaimspacedroppedcolumns