Merge pull request ldbc#360 from ldbc/feature/mssql-isolation

Change SQL Server Schema and Isolation level

Author: GLaDAP

mssql/ddl/load.sql

@@ -1,4 +1,11 @@
 USE ldbc;
+ALTER DATABASE ldbc
+SET READ_COMMITTED_SNAPSHOT ON
+
+ALTER DATABASE ldbc
+SET ALLOW_SNAPSHOT_ISOLATION ON
+
+SET TRANSACTION ISOLATION LEVEL SNAPSHOT;  
 -- Static --
 -- Organisation
 INSERT INTO [dbo].[Organisation] (id, type, name, url, LocationPlaceId)

mssql/ddl/schema-composite-merged-fk.sql

@@ -140,7 +140,6 @@ CREATE TABLE [dbo].[Person_knows_Person] (
     INDEX [GRAPH_UNIQUE_INDEX_Person_knows_Person] UNIQUE NONCLUSTERED ($edge_id) WITH (DATA_COMPRESSION = PAGE),
     INDEX [GRAPH_FromTo_INDEX_Person_knows_Person] CLUSTERED ($from_id, $to_id) WITH (DATA_COMPRESSION = PAGE),
     INDEX [GRAPH_ToFrom_INDEX_Person_knows_Person] NONCLUSTERED ($to_id, $from_id) WITH (DATA_COMPRESSION = PAGE),
-    CONSTRAINT EC_Person_knows_Person CONNECTION (Person TO Person) ON DELETE CASCADE
 ) AS EDGE;
 ALTER INDEX [GRAPH_UNIQUE_INDEX_Person_knows_Person] ON [dbo].[Person_knows_Person] DISABLE;
 
@@ -171,7 +170,6 @@ CREATE TABLE Person_likes_Message (
     INDEX [GRAPH_UNIQUE_INDEX_Person_likes_Message] UNIQUE NONCLUSTERED ($edge_id) WITH (DATA_COMPRESSION = PAGE),
     INDEX [GRAPH_FromTo_INDEX_Person_likes_Message] CLUSTERED ($from_id, $to_id) WITH (DATA_COMPRESSION = PAGE),
     INDEX [GRAPH_ToFrom_INDEX_Person_likes_Message] NONCLUSTERED ($to_id, $from_id) WITH (DATA_COMPRESSION = PAGE),
-    CONSTRAINT EC_Person_likes_Message CONNECTION (Person TO Message) ON DELETE CASCADE
 ) AS EDGE;
 ALTER INDEX [GRAPH_UNIQUE_INDEX_Person_likes_Message] ON [dbo].[Person_likes_Message] DISABLE;
 

mssql/ddl/schema-constraints.sql

@@ -1,12 +1,9 @@
 -- add PKs
 USE ldbc;
--- ALTER TABLE Message ADD PRIMARY KEY (Messageid);
--- ALTER TABLE Forum ADD PRIMARY KEY (id);
 ALTER TABLE Forum_hasMember_Person ADD PRIMARY KEY (ForumId, PersonId);
 ALTER TABLE Forum_hasTag_Tag ADD PRIMARY KEY (ForumId, TagId);
 ALTER TABLE Person_hasInterest_Tag ADD PRIMARY KEY (PersonId, TagId);
 ALTER TABLE Person_knows_Person ADD PRIMARY KEY (Person1Id, Person2Id);
-ALTER TABLE Person_likes_Message ADD PRIMARY KEY (PersonId, MessageId);
 ALTER TABLE Person_studyAt_University ADD PRIMARY KEY (PersonId, UniversityId);
 ALTER TABLE Person_workAt_Company ADD PRIMARY KEY (PersonId, CompanyId);
 ALTER TABLE Message_hasTag_Tag ADD PRIMARY KEY (MessageId, TagId);

mssql/ddl/triggers.sql

@@ -18,6 +18,7 @@ BEGIN
           AND Person_knows_Person.Person2Id = repliers.Person1Id
 
     DELETE FROM Message WHERE ParentMessageId IN ( SELECT MessageId FROM DELETED)
+    DELETE FROM Person_likes_Message WHERE MessageId IN ( SELECT MessageId FROM DELETED)
 END;
 
 CREATE OR ALTER TRIGGER TR_DEL_Forum ON Forum
@@ -35,6 +36,9 @@ AS
 BEGIN
   DELETE FROM Person_hasInterest_Tag    WHERE PersonId          IN ( SELECT PersonId FROM DELETED )
   DELETE FROM Person_studyAt_University WHERE PersonId          IN ( SELECT PersonId FROM DELETED )
+  DELETE FROM Person_likes_Message      WHERE PersonId          IN ( SELECT PersonId FROM DELETED )
+  DELETE FROM Person_knows_Person       WHERE Person1Id         IN ( SELECT PersonId FROM DELETED )
+  DELETE FROM Person_knows_Person       WHERE Person2Id         IN ( SELECT PersonId FROM DELETED )
   DELETE FROM Person_workAt_Company     WHERE PersonId          IN ( SELECT PersonId FROM DELETED )
   DELETE FROM Forum_hasMember_Person    WHERE PersonId          IN ( SELECT PersonId FROM DELETED )
   DELETE FROM Message                   WHERE CreatorPersonId   IN ( SELECT PersonId FROM DELETED )