diff --git a/cmd/relation.go b/cmd/relation.go
index fdf5de22..0fdc1d43 100644
--- a/cmd/relation.go
+++ b/cmd/relation.go
@@ -170,13 +170,19 @@ func (s *serverBuilder) updateViewMeta(table *Table, aView *view.View) error {
 	if err := json.Unmarshal([]byte(viewHint), tableMeta); err != nil {
 		return err
 	}
+
 	if tableMeta.Selector != nil {
 		aView.Selector = tableMeta.Selector
 	}
+
 	if tableMeta.Cache != nil {
 		aView.Cache = tableMeta.Cache
+	}
 
+	if tableMeta.AllowNulls != nil {
+		aView.AllowNulls = tableMeta.AllowNulls
 	}
+
 	if tableMeta.Connector != "" {
 		if _, err := s.addViewConn(tableMeta.Connector, aView); err != nil {
 			return err
diff --git a/cmd/sqlx.go b/cmd/sqlx.go
index 7e3c943e..742819a7 100644
--- a/cmd/sqlx.go
+++ b/cmd/sqlx.go
@@ -41,6 +41,7 @@ type (
 		Parameter         *view.Parameter
 		Auth              string
 		Selector          *view.Config
+		AllowNulls        *bool
 	}
 
 	Column struct {
diff --git a/view/connector.go b/view/connector.go
index d86217df..395e15d5 100644
--- a/view/connector.go
+++ b/view/connector.go
@@ -23,6 +23,7 @@ type (
 		Driver string        `json:",omitempty"`
 		DSN    string        `json:",omitempty"`
 
+		_dsn string
 		//TODO add secure password storage
 		db          func() (*sql.DB, error)
 		initialized bool
@@ -54,6 +55,9 @@ func (c *Connector) Init(ctx context.Context, connectors Connectors) error {
 		return nil
 	}
 
+	c._dsn = c.DSN
+	c.DSN = ""
+
 	if c.initialized {
 		return nil
 	}
@@ -88,7 +92,7 @@ func (c *Connector) DB() (*sql.DB, error) {
 	}
 
 	var err error
-	dsn := c.DSN
+	dsn := c._dsn
 	var secret *scy.Secret
 	if c.Secret != nil {
 		secrets := scy.New()
@@ -113,6 +117,10 @@ func (c *Connector) DB() (*sql.DB, error) {
 //Validate check if connector was configured properly.
 //Name, Driver and DSN are required.
 func (c *Connector) Validate() error {
+	if c.initialized {
+		return nil
+	}
+
 	if c.Name == "" {
 		return fmt.Errorf("connector name was empty")
 	}
@@ -121,23 +129,21 @@ func (c *Connector) Validate() error {
 		return fmt.Errorf("connector driver was empty")
 	}
 
-	if c.DSN == "" {
+	if notEmptyOf(c._dsn, c.DSN) == "" {
 		return fmt.Errorf("connector dsn was empty")
 	}
 	return nil
 }
 
 func (c *Connector) inherit(connector *Connector) {
-	if c.DSN == "" {
-		c.DSN = connector.DSN
-	}
+	c._dsn = notEmptyOf(c._dsn, c.DSN, connector._dsn, connector.DSN)
 
 	if c.Driver == "" {
 		c.Driver = connector.Driver
 	}
 
-	if c.DSN == "" {
-		c.DSN = connector.DSN
+	if c._dsn == "" {
+		c._dsn = connector._dsn
 	}
 
 	if c.db == nil {
diff --git a/view/resource_test.go b/view/resource_test.go
index 9395edc3..63b0408e 100644
--- a/view/resource_test.go
+++ b/view/resource_test.go
@@ -29,7 +29,7 @@ func TestNewResourceFromURL(t *testing.T) {
 	}{
 		{
 			url:    "case001",
-			expect: `{"SourceURL":"testdata/case001/resource.yaml","Connectors":[{"Name":"mydb","Driver":"sqlite3","DSN":"/tmp/view/mydb.db"}],"Views":[{"Connector":{"Name":"mydb","Driver":"sqlite3","DSN":"/tmp/view/mydb.db"},"Name":"events","Alias":"t","Table":"events","Columns":[{"Name":"id","DataType":"Int"},{"Name":"quantity","DataType":"Float"},{"Name":"event_type_id","DataType":"Int"}],"CaseFormat":"lu","Selector":{"Constraints":{"Criteria":false,"OrderBy":false,"Limit":false,"Offset":false,"Projection":false}},"Template":{"Source":"events","Schema":{"Cardinality":"One"},"PresenceSchema":{"Cardinality":"One"}},"Schema":{"Cardinality":"One"},"MatchStrategy":"read_matched","Batch":{"Parent":10000},"Logger":{"Name":""},"Caser":5}],"ModTime":"2022-07-13T19:18:05+02:00"}`,
+			expect: `{"SourceURL":"testdata/case001/resource.yaml","Connectors":[{"Name":"mydb","Driver":"sqlite3"}],"Views":[{"Connector":{"Name":"mydb","Driver":"sqlite3"},"Name":"events","Alias":"t","Table":"events","Columns":[{"Name":"id","DataType":"Int"},{"Name":"quantity","DataType":"Float"},{"Name":"event_type_id","DataType":"Int"}],"CaseFormat":"lu","Selector":{"Constraints":{"Criteria":false,"OrderBy":false,"Limit":false,"Offset":false,"Projection":false}},"Template":{"Source":"events","Schema":{"Cardinality":"One"},"PresenceSchema":{"Cardinality":"One"}},"Schema":{"Cardinality":"One"},"MatchStrategy":"read_matched","Batch":{"Parent":10000},"Logger":{"Name":""},"Caser":5}],"ModTime":"2022-07-13T19:18:05+02:00"}`,
 		},
 	}