Update SampleDB.sql

Author: jovanpop-msft

SQL/Samples/LdwSample/SampleDB.sql

@@ -1,6 +1,9 @@
 if db_name() = 'master'
     throw 50001, 'This script cannot be executed in master database. Create new database and run the script there.', 1;
 
+if SERVERPROPERTY('EngineEdition') <> 11
+    throw 50001, 'This script must be executed on Azure Synapse - SQL serverless endpoint.', 1;
+
 ------------------------------------------------------------------------------------------
 --      Part 1 - Cleanup script
 --      This part removes objects from sample database