CreateQuery tab (children 3)
 Identifier tab
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration m3 (children 1)
    DataType Map (children 1)
     ExpressionList (children 2)
      DataType Nothing
      DataType String
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList
