If so, there is no way to reuse the space vacated by the delete operation, so it is best to use truncate to delete the table.

The reason is that delete will lock the deleted space in the table, so naturally others can't write in it;

If yes, after trying various methods upstairs, and your SQL Server is 2008 or 2008R2 or 20 12.

You can try to rebuild the table, which can eliminate the lock problem caused by delete in the tablespace.