SQL 到 return 每行 1 列范围在 2017 年或 2018 年或 2019 年

Question

我有一个如下所示的查询：

SELECT DISTINCT
     p.person_ID
     ,p.Last_Name 
     ,ISNULL(p.Middle_Initial, '') AS Middle
     ,p.First_Name
     ,sh.Status_from_date
     ,sh.Status_thru_date
     --(a)
FROM 
    person p
INNER JOIN 
    Person_Facilities f ON p.Person_ID = f.Person_ID
LEFT OUTER JOIN
    rv_person_status_hist sh ON p.person_ID = sh.person_ID
ORDER BY 
    Last_Name

返回的数据看起来像这样（暂时忽略 2018 列）：

Person_id  Last_Name  Middle  First_Name  Status_from_date Status_thru_date    2018
8000       Skywalker  Dude    Luke        Null             2010-01-28 07:38      1
9000       Yoda               Phinnius    2017-06-01 00:00 2019-05-31 00:00      1
1000       Lamb       Little  Mary        2018-07-01 00:00 2020-06-30 00:00      1
2000       Spider     Bitsy   Itsy        2016-11-01 00:00 2017-06-30 00:00      1

如何添加一列，比如 [2018]，如果 status_from_date 到 status_thru_date 是在 2018 年，则输入 1，如果不是，则输入 0？

我想在查询中的 --(a) 添加以下内容：

,(SELECT case 
             when exists
             (
                select *  --
                FROM   dbo.RV_Person_status_hist
                where 
                status_from_date is not null
                and
                ('1-1-2018' between status_from_date and status_thru_date)
                and status_from_date is not null
                ) 
                then 1 else 0 end  ) 

                  AS [2018]

不过这似乎不起作用。参见上面table中的2018年专栏。它显示所有返回的 1，并且不排除空值。这很复杂。 status_from 和 status_thru 可能与 2018 一起下降，或者 2018 可能在 status_from 和 status_thru 内，它们应该都是 1.

如何排除空值，以及如何在状态日期包括 2018 年时显示 1？

我看过 range within range, and return 0 or 1。我不认为我有所有案例，因为范围也重叠。

**更新：我尝试在上面的 --(a) 添加这个，而不是根据下面的潜在答案：

,(SELECT status_from_date, status_thru_date,
             case 
             when datepart(year, status_from_date)='2018'
               or datepart(year, status_thru_date)='2018'
               or (
                status_from_date <= '01/01/2018'
                and status_thru_date >= '12/12/2018'
               )
            then 1
              else 0
              end)  AS [2018]

but I'm getting Ambiguous column name 'status_from_date'. Ambiguous column name 'status_thru_date'. Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.

有什么想法吗？想通了。

**更新 2：这个怎么样？

,(case when (
                (
                    (sh.status_from_date is null or sh.status_from_date <= '2017-01-01') and
                    (sh.status_thru_date is null or sh.status_thru_date >= '2017-12-31')
                ) 
                or
                (
                    (f.status_from_date is null or f.status_from_date <= '2017-01-01') and
                    (f.status_thru_date is null or f.status_thru_date >= '2017-12-31')
                ) 
                or
                (
                    (datepart(year, sh.status_from_date)='2017') or
                    (datepart(year, sh.status_thru_date)='2017') or
                    (datepart(year, f.status_from_date)='2017') or
                    (datepart(year, f.status_from_date)='2017')

                ) 
                and
                    p.Sex='M'
            )
       then 1 else 0
end) as [2017_Male]
,(case when (
                (
                    (sh.status_from_date is null or sh.status_from_date <= '2017-01-01') and
                    (sh.status_thru_date is null or sh.status_thru_date >= '2017-12-31')
                ) 
                or
                (
                    (f.status_from_date is null or f.status_from_date <= '2017-01-01') and
                    (f.status_thru_date is null or f.status_thru_date >= '2017-12-31')
                ) 
                or
                (
                    (datepart(year, sh.status_from_date)='2017') or
                    (datepart(year, sh.status_thru_date)='2017') or
                    (datepart(year, f.status_from_date)='2017') or
                    (datepart(year, f.status_from_date)='2017')

                ) 
                and
                    p.Sex='F'
            )
       then 1 else 0
end) as [2017_Female]--------

对于以下数据：status_from：2014-10-01 和 status_to：2016-09-30

Answer 1

你可以这样做：

while 将检查开始或结束是否包含 2018 年，或者日期是否在开始和结束之间

CREATE TABLE #testTable (
    Status_from_date DATETIME,
    Status_thru_date DATETIME
    )

INSERT INTO #testTable (
    Status_from_date,
    Status_thru_date
    )
VALUES (
    '2017-06-01 00:00',
    '2019-05-31 00:00'
    ),
    (
    NULL,
    '2010-01-28 07:38'
    ),
    (
    '2018-07-01 00:00',
    '2020-06-30 00:00'
    )

SELECT Status_from_date,
    Status_thru_date,
    CASE 
        WHEN datepart(year, Status_from_date) = '2018'
            OR datepart(year, Status_thru_date) = '2018'
            OR (
                Status_from_date <= '01/01/2018'
                AND Status_thru_date >= '12/12/2018'
                )
            THEN 1
        ELSE 0
        END AS '2018'
FROM #testTable

DROP TABLE #testTable

产生：

Status_from_date            Status_thru_date            2018
2017-06-01 00:00:00.000     2019-05-31 00:00:00.000     1
NULL                        2010-01-28 07:38:00.000     0
2018-07-01 00:00:00.000     2020-06-30 00:00:00.000     1

Answer 2

如果你想在 2018 年有任何重叠，那么：

(case when (status_from_date is null or status_from_date < '2019-01-01') and
           (status_to_date is null or status_to_date >= '2018-01-01')
      then 1 else 0
 end) as is_2018

如果您想要整年的重叠：

(case when (status_from_date is null or status_from_date <= '2018-01-01') and
           (status_to_date is null or status_to_date >= '2018-12-31')
      then 1 else 0
 end) as is_2018

SQL 到 return 每行 1 列范围在 2017 年或 2018 年或 2019 年

SQL to return 1 for each row with column range in 2017 or 2018 or 2019

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sql-server-2008-r2

range