maintenance/mssql/archives/patch-recentchanges-drop-fks.sql

   1 DECLARE @base nvarchar(max),
   2         @SQL nvarchar(max),
   3         @id sysname;--
   4
   5 SET @base = 'ALTER TABLE /*_*/recentchanges DROP CONSTRAINT ';--
   6
   7 SELECT @id = fk.name
   8 FROM sys.foreign_keys fk
   9 JOIN sys.foreign_key_columns fkc
  10         ON fkc.constraint_object_id = fk.object_id
  11 JOIN sys.columns c
  12         ON c.column_id = fkc.parent_column_id
  13         AND c.object_id = fkc.parent_object_id
  14 WHERE
  15         fk.parent_object_id = OBJECT_ID('/*_*/recentchanges')
  16         AND fk.referenced_object_id = OBJECT_ID('/*_*/page')
  17         AND c.name = 'rc_cur_id';--
  18
  19 SET @SQL = @base + @id;--
  20
  21 EXEC sp_executesql @SQL;--
  22
  23 SELECT @id = fk.name
  24 FROM sys.foreign_keys fk
  25 JOIN sys.foreign_key_columns fkc
  26         ON fkc.constraint_object_id = fk.object_id
  27 JOIN sys.columns c
  28         ON c.column_id = fkc.parent_column_id
  29         AND c.object_id = fkc.parent_object_id
  30 WHERE
  31         fk.parent_object_id = OBJECT_ID('/*_*/recentchanges')
  32         AND fk.referenced_object_id = OBJECT_ID('/*_*/revision')
  33         AND c.name = 'rc_this_oldid';--
  34
  35 SET @SQL = @base + @id;--
  36
  37 EXEC sp_executesql @SQL;--
  38
  39 SELECT @id = fk.name
  40 FROM sys.foreign_keys fk
  41 JOIN sys.foreign_key_columns fkc
  42         ON fkc.constraint_object_id = fk.object_id
  43 JOIN sys.columns c
  44         ON c.column_id = fkc.parent_column_id
  45         AND c.object_id = fkc.parent_object_id
  46 WHERE
  47         fk.parent_object_id = OBJECT_ID('/*_*/recentchanges')
  48         AND fk.referenced_object_id = OBJECT_ID('/*_*/revision')
  49         AND c.name = 'rc_last_oldid';--
  50
  51 SET @SQL = @base + @id;--
  52
  53 EXEC sp_executesql @SQL;--
  54
  55 -- while we're at it, let's fix up the other foreign key constraints on recentchanges
  56 -- as future patches touch constraints on other tables, they'll take the time to update constraint names there as well
  57 ALTER TABLE /*_*/recentchanges DROP CONSTRAINT FK_rc_logid_log_id;--
  58 ALTER TABLE /*_*/recentchanges ADD CONSTRAINT rc_logid__log_id__fk FOREIGN KEY (rc_logid) REFERENCES /*_*/logging(log_id) ON DELETE CASCADE;--
  59
  60 SELECT @id = fk.name
  61 FROM sys.foreign_keys fk
  62 JOIN sys.foreign_key_columns fkc
  63         ON fkc.constraint_object_id = fk.object_id
  64 JOIN sys.columns c
  65         ON c.column_id = fkc.parent_column_id
  66         AND c.object_id = fkc.parent_object_id
  67 WHERE
  68         fk.parent_object_id = OBJECT_ID('/*_*/recentchanges')
  69         AND fk.referenced_object_id = OBJECT_ID('/*_*/mwuser')
  70         AND c.name = 'rc_user';--
  71
  72 SET @SQL = @base + @id;--
  73
  74 EXEC sp_executesql @SQL;--
  75
  76 ALTER TABLE /*_*/recentchanges ADD CONSTRAINT rc_user__user_id__fk FOREIGN KEY (rc_user) REFERENCES /*_*/mwuser(user_id);