Null out sponsorship values when foreign key deleted (#1733)

This allows us to maintain record of sponsorships up
until they are explicitly removed. Fixes issues where removing
sponsorships from organizations with invalid sponsorships would error

src/Sql/dbo/Stored Procedures/OrganizationSponsorship_OrganizationDeleted.sql

@@ -9,23 +9,13 @@ BEGIN
     SET
         [SponsoringOrganizationId] = NULL
     WHERE
-        [SponsoringOrganizationId] = @OrganizationId AND
-        [CloudSponsor] = 0
+        [SponsoringOrganizationId] = @OrganizationId
 
     UPDATE
         [dbo].[OrganizationSponsorship]
     SET
         [SponsoredOrganizationId] = NULL
     WHERE
-        [SponsoredOrganizationId] = @OrganizationId AND
-        [CloudSponsor] = 0
-
-    DELETE
-    FROM
-        [dbo].[OrganizationSponsorship]
-    WHERE
-        [CloudSponsor] = 1 AND
-        ([SponsoredOrganizationId] = @OrganizationId OR
-         [SponsoringOrganizationId] = @OrganizationId)
+        [SponsoredOrganizationId] = @OrganizationId
 END
 GO

src/Sql/dbo/Stored Procedures/OrganizationSponsorship_OrganizationUserDeleted.sql

@@ -4,9 +4,12 @@ AS
 BEGIN
     SET NOCOUNT ON
 
-    DELETE
+    UPDATE
+        OS
+    SET
+        [SponsoringOrganizationUserId] = NULL
     FROM
-        [dbo].[OrganizationSponsorship]
+        [dbo].[OrganizationSponsorship] OS
     WHERE
         [SponsoringOrganizationUserId] = @OrganizationUserId
 END

src/Sql/dbo/Stored Procedures/OrganizationSponsorship_OrganizationUsersDeleted.sql

@@ -4,22 +4,13 @@ AS
 BEGIN
     SET NOCOUNT ON
 
-    DECLARE @BatchSize AS INT;
-    SET @BatchSize = 100;
-
-    WHILE @BatchSize > 0
-        BEGIN
-        BEGIN TRANSACTION OrganizationSponsorship_DeleteOUs
-
-        DELETE TOP(@BatchSize) OS
-        FROM
-            [dbo].[OrganizationSponsorship] OS
-        INNER JOIN
-            @SponsoringOrganizationUserIds I ON I.Id = OS.SponsoringOrganizationUserId
-
-        SET @BatchSize = @@ROWCOUNT
-
-        COMMIT TRANSACTION OrganizationSponsorship_DeleteOUs
-    END
+    UPDATE
+        OS
+    SET
+        [SponsoringOrganizationUserId] = NULL
+    FROM
+        [dbo].[OrganizationSponsorship] OS
+    INNER JOIN
+        @SponsoringOrganizationUserIds I ON I.Id = OS.SponsoringOrganizationUserId
 END
 GO