ORACLE:
select r1 || '*' || r1 || '=' || r1 * r1 A,
decode(r2, '', '', r2 || '*' || r1 || '=' || r2 * r1) b,
decode(r3, '', '', r3 || '*' || r1 || '=' || r3 * r1) C,
decode(r4, '', '', r4 || '*' || r1 || '=' || r4 * r1) D,
decode(r5, '', '', r5 || '*' || r1 || '=' || r5 * r1) E,
decode(r6, '', '', r6 || '*' || r1 || '=' || r6 * r1) F,
decode(r7, '', '', r7 || '*' || r1 || '=' || r7 * r1) G,
decode(r8, '', '', r8 || '*' || r1 || '=' || r8 * r1) H,
decode(r9, '', '', r9 || '*' || r1 || '=' || r9 * r1) I
from (select level r1,
lag(level, 1) over(order by level) r2,
lag(level, 2) over(order by level) r3,
lag(level, 3) over(order by level) r4,
lag(level, 4) over(order by level) r5,
lag(level, 5) over(order by level) r6,
lag(level, 6) over(order by level) r7,
lag(level, 7) over(order by level) r8,
lag(level, 8) over(order by level) r9
from dual
connect by level < 10)
本文转自温景良博客园博客，原文链接：http://www.cnblogs.com/wenjl520/archive/2008/11/02/1324973.html，如需转载请自行联系原作者
