Cover re-type alterations by creating additional columns

server/compose/service/module.go

@@ -623,7 +623,7 @@ func (svc module) updater(ctx context.Context, namespaceID, moduleID uint64, act
 			if err = svc.eventbus.WaitFor(ctx, event.ModuleAfterUpdate(m, old, ns)); err != nil {
 				return err
 			}
-			if err = DalModelReplace(ctx, s, svc.schemaAltManager, svc.dal, ns, old, m); err != nil {
+			if err = DalModelReplace(ctx, s, svc.schemaAltManager, svc.dal, ns, m); err != nil {
 				return err
 			}
 		} else {

server/store/adapters/rdbms/dal/connection.go

@@ -513,9 +513,23 @@ func (c *connection) assertAlterationAttributeReType(table *ddl.Table, colIndex
 	return
 }
 
-// @todo might consider droppig this one for now
+// @todo for now it just creates a new column; we should add some migration in the future
 func (c *connection) assertAlterationAttributeReEncode(table *ddl.Table, colIndex map[string]*ddl.Column, alt *dal.Alteration) (out []*dal.Alteration, err error) {
-	// ...
+	auxCodec := *alt.AttributeReEncode.Attr
+	auxCodec.Store = alt.AttributeReEncode.To
+
+	out = append(out, &dal.Alteration{
+		ID:           alt.ID,
+		BatchID:      alt.BatchID,
+		DependsOn:    alt.DependsOn,
+		Resource:     alt.Resource,
+		ResourceType: alt.ResourceType,
+		ConnectionID: alt.ConnectionID,
+
+		AttributeAdd: &dal.AttributeAdd{
+			Attr: &auxCodec,
+		},
+	})
 	return
 }