Will this work? select A, B from (select A, B, lag(A, 1) over (order by A) as A1, lead(A, 1) over (order by A) as A2 from T) where A = A1 or A = A2

fromztoa (fromZtoA)
(#260764@0)
2001-11-14 -05:00

回到话题: 闲来无事, 出道ORACLE SQL的题考考大家. 这是在下几个月前工作中遇到的问题, 看似简单, 其实不然.

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