CreateQuery test2 (children 2)
 Identifier test2
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType String
   ColumnDeclaration nest (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 2)
        NameTypePair x (children 1)
         DataType String
        NameTypePair y (children 1)
         DataType String
