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  • SQL谜题(楼层谜题)

    Multiple Dwellings
    Baker, Cooper, Fletcher, Miller and Smith live on different floors of an apartment house that contains only five floors.
    Baker does not live on the top floor. Cooper does not live on the bottom floor.
    Fletcher does not live on either the top or the bottom floor. Miller lives on a higher floor than does Cooper.
    Smith does not live on a floor adjacent to Fletcher’s.
    Fletcher does not live on a floor adjacent to Cooper’s. Where does everyone live?

    --Baker, Cooper, Fletcher, Miller and Smith住在一座房子的不同楼层.

    --Baker 不住顶层.

    --Cooper不住底层.

    --Fletcher 既不住顶层也不住底层.
    --Miller住得比Cooper高.
    --Smith住的楼层和Fletcher不相邻.
    --Fletcher住的楼层和Cooper不相邻.

     
    select*from 
    (select (number) Baker from master.dbo.spt_values where type='P' and number between 1 and 5 ) as a,
    (select (number) Cooper from master.dbo.spt_values where type='P' and number between 1 and 5 ) as b,
    (select (number) Fletcher from master.dbo.spt_values where type='P' and number between 1 and 5 ) as c ,
    (select (number) Miller from master.dbo.spt_values where type='P' and number between 1 and 5 ) as d,
    (select (number) Smith from master.dbo.spt_values where type='P' and number between 1 and 5 ) as e
    where 
    Baker<>5 and 
    Cooper<>1 and 
    Fletcher not in (1,5) and 
    Miller>Cooper and 
    abs(Smith-Fletcher)<>1 and 
    abs(Fletcher-Cooper)<>1
    and Baker<>Cooper 
    and Baker<>Fletcher
    and Baker<>Miller 
    and Baker<>Smith
    and Cooper<>Fletcher
    and Cooper<>Miller
    and Cooper<>Smith 
    and Fletcher<>Miller
    and Fletcher<>Smith
    and Smith<>Miller

    查询结果

     

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  • 原文地址:https://www.cnblogs.com/martintuan/p/4913626.html
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