SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN\'
               Literal \'actions = 1\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 3)
                   ExpressionList (children 1)
                    Asterisk
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      TableIdentifier t_02809
                   Function notIn (children 1)
                    ExpressionList (children 2)
                     Identifier a
                     Subquery (children 1)
                      SelectWithUnionQuery (children 1)
                       ExpressionList (children 1)
                        SelectQuery (children 2)
                         ExpressionList (children 1)
                          Asterisk
                         TablesInSelectQuery (children 1)
                          TablesInSelectQueryElement (children 1)
                           TableExpression (children 1)
                            TableIdentifier system.one
   Function like (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%Prewhere filter\'
