CreateQuery h (children 3)
 Identifier h
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType Int64
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function count (children 1)
      ExpressionList
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function s3 (children 1)
        ExpressionList (children 2)
         Literal \'https://example.s3.amazonaws.com/a.csv\'
         Function headers (children 1)
          ExpressionList (children 1)
           Function equals (children 1)
            ExpressionList (children 2)
             Literal \'foo\'
             Literal \'bar\'
