Posted on 2007-06-13 14:37
*飞雪冲天* 阅读(183)
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oracle
例1：
select * from (
select to_char(add_months(to_date('200501','yyyymm'), rownum), 'yyyymm') from dual
connect by rownum<months_between(to_date('200512','yyyymm'),to_date('200501','yyyymm')));
例2：
select to_char(to_date('200105','yyyymm'),'yyyy')+ b.bb||'00'+a.aa ff
from
(select level aa from dual connect by 1=1 and level <13 ) a,
(select level-1 bb from dual connect by 1=1 and level <=
(to_char(to_date('200402','yyyymm'),'yyyy') - to_char(to_date('200105','yyyymm'),'yyyy')+1) ) b
where to_char(to_date('200105','yyyymm'),'yyyy')+ b.bb||'00'+a.aa >='200105'
and to_char(to_date('200105','yyyymm'),'yyyy')+ b.bb||'00'+a.aa <='200402'