misc

--delete certain classes of rows

DELETE FROM CheckdbRepro..Users WHERE NOT EXISTS (SELECT * FROM CheckdbRepro..Universities WHERE AdminUserID = Users.ID)
DELETE FROM CheckdbRepro..Users WHERE EXISTS (SELECT * FROM CheckdbRepro..Universities WHERE AdminUserID = Users.ID)
DELETE FROM CheckdbRepro..Users WHERE ImageObjectID IS NULL
DELETE FROM CheckdbRepro..Users WHERE ImageObjectID IS NOT NULL



--index variants:

--with filter (bug)
CREATE NONCLUSTERED INDEX [IX_Users_ImageObjectID] ON [Users]
(
    [ImageObjectID] ASC
)
WHERE ([ImageObjectID] IS NOT NULL)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO



--no filter (no bug)
CREATE NONCLUSTERED INDEX [IX_Users_ImageObjectID] ON [Users]
(
    [ImageObjectID] ASC
)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO