小编Bar*_*z X的帖子

我要做的是根据一列选择表中其余数据稳定的时间段,并检查此期间第二列值是否有变化.

表:

create table #stable_periods
(
[Date]             date,
[Car_Reg]          nvarchar(10),
[Internal_Damages] int,
[External_Damages] int
)

insert into #stable_periods
values  ('2015-08-19', 'ABC123', 10, 10),
        ('2015-08-18', 'ABC123', 9, 10),
        ('2015-08-17', 'ABC123', 8, 9),
        ('2015-08-16', 'ABC123', 9, 9),
        ('2015-08-15', 'ABC123', 10, 10),
        ('2015-08-14', 'ABC123', 10, 10),
        ('2015-08-19', 'ABC456', 5, 3),
        ('2015-08-18', 'ABC456', 5, 4),
        ('2015-08-17', 'ABC456', 8, 4),
        ('2015-08-16', 'ABC456', 9, 4),
        ('2015-08-15', 'ABC456', 10, 10),
        ('2015-01-01', 'ABC123', 1, 1),
        ('2015-01-01', 'ABC456', NULL, NULL);

--select * from #stable_periods
-- Unfortunately I can’t post …