CreateQuery g (children 3)
 Identifier g
 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 3)
         Literal \'https://example.s3.amazonaws.com/a.csv\'
         Identifier CSV
         Function headers (children 1)
          ExpressionList (children 1)
           Function equals (children 1)
            ExpressionList (children 2)
             Literal \'foo\'
             Literal \'bar\'
