有趣的sql(3)

几个显示结果很有趣的SQL。
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转贴自Lunar2000的专栏http://blog.csdn.net/lunar2000/?
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一颗巨大的友谊之树 http://blog.csdn.net/lunar2000/archive/2004/07/26/51714.aspx
SQL> set pagesize 2000
SQL> select decode
? 2???????? ( sign(floor(maxwidth*2)-rownum)
? 3???????? , 1, lpad( ' ', floor(maxwidth*2)-(rownum-1))
? 4?????????? || rpad( '*', 2*(rownum-1)+1, ' *')
? 5???????? , lpad( '* * *', floor(maxwidth*2)+3))
? 6? from all_objects
? 7???? , (select 20 as maxwidth from dual)
? 8? where rownum < floor(maxwidth*2) +5;
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SQL> set heading on
SQL> set feedback on
SQL>
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一颗小小的柏
http://blog.csdn.net/lunar2000/archive/2004/07/26/51718.aspx

sys@TEST_LUNAR> set heading on
sys@TEST_LUNAR> set feedback on
sys@TEST_LUNAR>
sys@TEST_LUNAR> set heading off
sys@TEST_LUNAR> set feedback off
sys@TEST_LUNAR> set pagesize 2000
sys@TEST_LUNAR>
sys@TEST_LUNAR> select decode
? 2???????? ( sign(floor(maxwidth/2)-rownum)
? 3???????? , 1, lpad( ' ', floor(maxwidth/2)-(rownum-1))
? 4?????????? || rpad( chr(257), 2*(rownum-1)+1, ' ' || chr(257))
? 5???????? , lpad( chr(257) || chr(257) || chr(257), floor(maxwidth/2)+3))
? 6? from all_objects
? 7???? , (select 25 as maxwidth from dual)
? 8? where rownum < floor(maxwidth/2) +6;
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sys@TEST_LUNAR>
sys@TEST_LUNAR> set heading on
sys@TEST_LUNAR> set feedback on
sys@TEST_LUNAR>
sys@TEST_LUNAR>
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红豆冰山
http://blog.csdn.net/lunar2000/archive/2004/07/26/51720.aspx

sys@TEST_LUNAR> set heading on
sys@TEST_LUNAR> set feedback on
sys@TEST_LUNAR> set heading off
sys@TEST_LUNAR> set feedback off
sys@TEST_LUNAR> set pagesize 2000
sys@TEST_LUNAR>
sys@TEST_LUNAR> select decode
? 2???????? ( sign(floor(maxwidth/2)-rownum)
? 3???????? , 1, lpad( ' ', floor(maxwidth/2)-(rownum-1))
? 4?????????? || rpad( '*', 2*(rownum-1)+1, ' *')
? 5???????? )
? 6? from all_objects
? 7???? , (select 10 as maxwidth from dual)
? 8? where rownum < floor(maxwidth/2) +1;
???? *
??? * *
?? * * *
? * * * *
sys@TEST_LUNAR>
sys@TEST_LUNAR> set heading on
sys@TEST_LUNAR> set feedback on
sys@TEST_LUNAR>
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心存感激
http://blog.csdn.net/lunar2000/archive/2004/07/26/51724.aspx

set heading off
set feedback off
set pagesize 2000
select t
from (select t, rownum rowcount from t) t
order by rowcount desc;
set heading on
set feedback on

SQL> select t
? 2? from (select t, rownum rowcount from t) t
? 3? order by rowcount desc;
T
--------------------------------------------------------------------------------
??? ((`'-"``""-'`))
???? )?? -??? -? (
??? /?? (o _ o)?? /
??? /??? ( 0 )??? /
??? _'-.._'='_..-'_
? /`;#'#'#.-.#'#'#;`/
? /_))??? '#'??? ((_/
??? #.? ☆ ☆ ☆?? #
??? '#.? 谢谢了! .#'
??? / '#.????? .#' /
?? _/? /'#. .#'/? /_
? (((___) '#' (___)
12 rows selected
SQL>
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