SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 3)
    Function replaceAll (children 1)
     ExpressionList (children 3)
      Identifier query
      Literal \'\\n\'
      Literal \'\\\\n\'
    Function lower (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Identifier type
        Literal \'String\'
    Function errorCodeToName (children 1)
     ExpressionList (children 1)
      Identifier exception_code
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier current_database
     Function currentDatabase (children 1)
      ExpressionList
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier event_time_microseconds
 Identifier CSV
