SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 4)
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier read_rows
      Identifier written_rows
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier read_rows
      Identifier result_rows
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier read_bytes
      Identifier written_bytes
    Function equals (children 1)
     ExpressionList (children 2)
      Identifier read_bytes
      Identifier result_bytes
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier normalized_query_hash
       Literal UInt64_1214411238725380014
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal \'QueryFinish\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
 Identifier CSV
