CreateQuery d (children 3)
 Identifier d
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType Int64
 Storage definition (children 1)
  Function S3 (children 1)
   ExpressionList (children 3)
    Literal \'https://example.s3.amazonaws.com/a.csv\'
    Identifier NOSIGN
    Function headers (children 1)
     ExpressionList (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'foo\'
        Literal \'bar\'
