Ensured that representative but non-deployable snapshots are not created.

Signed-off-by: davem-bis <68955845+davem-bis@users.noreply.github.com>

Author: davem-bis

sqlmesh/core/plan/stages.py

@@ -313,7 +313,7 @@ def build(self, plan: EvaluatablePlan) -> t.List[PlanStage]:
         if plan.new_snapshots:
             stages.append(CreateSnapshotRecordsStage(snapshots=plan.new_snapshots))
 
-        snapshots_to_create = self._get_snapshots_to_create(plan, snapshots)
+        snapshots_to_create = self._get_snapshots_to_create(plan, snapshots, deployability_index)
         if snapshots_to_create:
             stages.append(
                 PhysicalLayerSchemaCreationStage(
@@ -629,7 +629,7 @@ def _get_audit_only_snapshots(
         return audit_snapshots
 
     def _get_snapshots_to_create(
-        self, plan: EvaluatablePlan, snapshots: t.Dict[SnapshotId, Snapshot]
+        self, plan: EvaluatablePlan, snapshots: t.Dict[SnapshotId, Snapshot], deployability_index: DeployabilityIndex
     ) -> t.List[Snapshot]:
         promoted_snapshot_ids = (
             set(plan.environment.promoted_snapshot_ids)
@@ -640,6 +640,11 @@ def _get_snapshots_to_create(
         def _should_create(s: Snapshot) -> bool:
             if not s.is_model or s.is_symbolic:
                 return False
+
+            # Do not create snapshots that contain production data but can never be deployed.
+            if deployability_index.is_representative(s) and not deployability_index.is_deployable(s):
+                return False
+
             # Only create tables for snapshots that we're planning to promote or that were selected for backfill
             return (
                 plan.is_selected_for_backfill(s.name)