SQL Server 2008-从单日期列创建和从日期

要开始我正在处理的表有不一致，因为有空白的租户值，我无法控制（供应商将需要时间来解决它）。日期列也是varchar，就像它在实际表中的样子一样。再次，我无法控制的东西，并为了报告的目的选择最大日期，日期列需要从字符更改为日期。数据库正在SQL Server 2008上运行，因此无法使用LEAD功能SQL Server 2008-从单日期列创建和从日期

我有一个@rent表变量，如下所示，它包含租户租金收费值。 I.e每次租户租金更新\更改它将应用于@rent表中。在某些情况下，租金可能会在一天内多次更新，或者如果团队发现不正确的租金被应用（注意创建的date_sql），则会在将来更改租金。 Date_changed_SQL表示何时实际应用租金。 DATE_CHANGED_SQL列将用于创建From至To列。

在大多数情况下会出现重复DATE_CHANGED_SQL而是基于CREATED_DATE_SQL和最新TOT_DEB_Val需要时间来选择

的样本数据：

Declare @rent TABLE 
    ([R23_SQL_ID] int, [PROP_CODE] int, [TENANT_NUMB] varchar(5), [TOT_DEB_VAL] int, [DATE_CHANGED_SQL] varchar(10), [TIME_CHANGED_SQL] varchar(5), [CREATED_DATE_SQL] varchar(10), [CREATED_TIME_SQL] varchar(5)) 

INSERT INTO @rent 
    ([R23_SQL_ID], [PROP_CODE], [TENANT_NUMB], [TOT_DEB_VAL], [DATE_CHANGED_SQL], [TIME_CHANGED_SQL], [CREATED_DATE_SQL], [CREATED_TIME_SQL]) 
VALUES 
    (12080, 2524, '41673', 77.49, '2011-07-28', '04:42', '2013-03-19', '04:42'), 
    (12081, 2524, '41673', 79.42, '2012-02-02', '04:42', '2013-03-19', '04:42'), 
    (12082, 2524, '41673', 79.95, '2012-08-16', '04:42', '2013-03-19', '04:42'), 
    (21819, 2524, '', 67.91, '2015-01-15', '09:39', '2015-01-15', '09:39'), 
    (21820, 2524, '51500', 67.91, '2015-01-16', '', '2015-01-15', '09:45'), 
    (31729, 2524, '51500', 67.91, '2016-08-08', '', '2016-08-08', ''), 
    (31152, 2524, '51500', 193.48, '2016-09-05', '10:53', '2016-09-05', '10:53'), 
    (34215, 2524, '', 89.86, '2017-03-14', '18:53', '2017-03-14', '18:53'), 
    (34216, 2524, '53407', 89.86, '2017-03-15', '', '2017-03-14', '18:53'), 
    (34260, 2524, '53407', 89.86, '2017-03-15', '12:32', '2017-03-20', '12:32'), 
    (29461, 1589, '33659', 151.78, '2000-08-21', '19:00', '2016-08-16', '19:00'), 
    (8356, 1589, '33659', 136.84, '2011-05-26', '04:42', '2013-03-19', '04:42'), 
    (8357, 1589, '33659', 144.36, '2011-11-24', '04:42', '2013-03-19', '04:42'), 
    (8358, 1589, '33659', 147.91, '2012-05-31', '04:42', '2013-03-19', '04:42'), 
    (8359, 1589, '33659', 151.78, '2012-11-29', '04:42', '2013-03-19', '04:42'), 
    (14502, 1589, '33659', 200.00, '2013-08-12', '08:30', '2013-08-12', '08:30'), 
    (15476, 1589, '', 157.68, '2013-11-22', '09:49', '2013-11-22', '09:49'), 
    (17846, 1589, '50602', 157.68, '2013-11-29', '14:00', '2014-05-21', '14:00'), 
    (18548, 1589, '50980', 157.68, '2014-06-18', '', '2014-06-18', '13:21'), 
    (18547, 1589, '50980', 160.69, '2014-06-18', '13:21', '2014-06-18', '13:21'), 
    (20351, 1589, '51343', 160.69, '2014-11-07', '', '2014-11-05', '14:20'), 
    (24096, 1589, '51343', 163.74, '2015-07-27', '07:34', '2015-07-27', '07:34'), 
    (26286, 1589, '51343', 165.01, '2016-01-25', '08:59', '2016-01-25', '08:59'), 
    (28168, 1589, '51343', 166.31, '2016-06-13', '11:02', '2016-06-13', '11:02'), 
    (32751, 1589, '51343', 166.80, '2016-12-12', '08:52', '2016-12-12', '08:52'), 
    (34058, 1589, '53386', 110.91, '2017-03-07', '', '2017-03-07', '08:22'), 
    (34057, 1589, '53386', 110.91, '2017-03-07', '08:17', '2017-03-07', '08:17'), 
    (34189, 1589, '53386', 110.91, '2017-03-07', '13:19', '2017-03-13', '13:19')

要求：我想创建以显示租期（From和To），每个物业和租户的租金价值如下

Desired Result Screenshot

来源

2017-04-02 Jag99

如果突出显示你的答案的代码组件和文本输入区上方的工具栏中的代码示例按钮（花括号键）就可以格式化你的代码，使之更具可读性。或者，你可以缩进每行4个空格（如果你事先在文本编辑器中准备好你的代码，这可能会更容易。 – toonice

嗨，约翰，没用过很多的stackoverflow，我下次还会尝试。因此上传了截图 – Jag99

这可能是我的回答比我第一次想到的要好，在你期望的结果集中倒数第二行是正确的吗？在所有其他的行中，'to_date'是在' from_date' –

以下内容似乎与您想要的非常接近。您可能需要稍微调整一下。它不能完全按照您的数据给出结果...但它非常接近，应该给你一些工作。

/*cte assigns a row number to each entry, so we can join to the following row for that property*/ 
with cte as (
select 
    R23_SQL_ID, 
    PROP_CODE, 
    TENANT_NUMB, 
    DATE_CHANGED_SQL, 
    TOT_DEB_VAL, 
    CREATED_DATE_SQL, 
    ROW_NUMBER() OVER (PARTITION BY PROP_CODE ORDER BY DATE_CHANGED_SQL, TIME_CHANGED_SQL) as Seqn 
from @rent 
    --I wasn't sure about this where clause, you may want to get rid of it, but the results were closer to what you asked for with it in. 
    where TENANT_NUMB <> '' 
    ) 

select 
    rentStart.R23_SQL_ID, 
    rentStart.PROP_CODE, 
    rentStart.TENANT_NUMB, 
    rentStart.DATE_CHANGED_SQL as From_Date, 
    --where you've got to the last row, I've put in "today" as the end date 
    convert(char(10),isnull(dateadd(dd,-1,rentEnd.DATE_CHANGED_SQL), getdate()),121) as To_Date, 
    rentStart.TOT_DEB_VAL, 
    rentStart.CREATED_DATE_SQL 
from 
    cte as rentStart 
    LEFT JOIN cte as rentEnd ON 
     rentStart.Prop_Code = rentEnd .Prop_Code AND 
     rentStart.Seqn + 1 = rentEnd .Seqn 
where 
    --Filtering to just the property you were showing 
    rentStart.Prop_Code = 2524 
    --This is the attempt to look only for the final change in the day. It may be better handled in the CTE rather than here. 
AND (rentStart.DATE_CHANGED_SQL < rentEnd.Date_CHANGED_SQL OR rentEnd.DATE_CHANGED_SQL is null)

来源

2017-04-02 14:52:40

这对我有帮助@ Jag99？如果你能说出什么是错误的，我很乐意再次看到这个。如果你对它感到满意，请将它标记为答案已被接受。 –

SQL Server 2008-从单日期列创建和从日期

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