SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Function tupleElement (children 1)
     ExpressionList (children 2)
      Identifier columns
      Literal UInt64_5
    Function tupleElement (children 1)
     ExpressionList (children 2)
      Identifier columns
      Literal UInt64_6
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function file (children 1)
       ExpressionList (children 2)
        Identifier strings1_02735.parquet
        Identifier ParquetMetadata
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 1)
       Identifier columns
