SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function arrayElement (children 1)
     ExpressionList (children 2)
      Identifier ProfileEvents
      Literal \'FileOpen\'
   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 type
       Literal \'QueryFinish\'
     Function like (children 1)
      ExpressionList (children 2)
       Function lower (children 1)
        ExpressionList (children 1)
         Identifier query
       Function lower (children 1)
        ExpressionList (children 1)
         Literal \'SELECT a.size0 FROM %t_arr%\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList