Question

我知道我可以将上一行/下一行与/^'|'$|'(?=,)|(?<=,)'/ # regex used for removing single quote ^' # quote found at start '$ # quote found at end '(?=,) # lookahead, quote followed by a comma (?<=,)' # lookbehind, quote preceded by a comma和LAG进行比较，但在我正在进行的比较中;我需要能够偶尔跳过行（但仍需要确认它们）

具体细节：我正在尝试跟踪咨询，以及呼叫环境中的冷热转移。每个呼叫都有一个唯一的密钥，每个阶段都有一个递增的员工编号。它还包含每个呼叫段的开始和结束时间咨询被定义为在前一个非咨询段结束之前开始和结束的呼叫热转印是指前一个分段的末尾在前一个分段开始之后，在前一个分段结束之后结束的转移。冷转移是在上一个分段结束后开始的分段。

示例数据：

topcallid   e_created       e_terminated    empnum
EG995GIFM   16:22:40.933    16:29:51.010    1
EG995GIFM   16:25:59.827    16:27:49.027    2
EG995GIFM   16:30:07.453    16:37:44.500    3
EG995GIFM   16:38:01.677    16:59:30.777    4
EG995GIFM   16:59:46.737    17:16:48.397    5
EG995GIFM   17:04:51.243    17:29:21.620    6

期望的输出：

LEAD

当前代码，它将每个阶段与以下所有阶段进行比较：

topcallid.......TransStatus  
EG995GIFM   Consult (Stage 1 To 2)  
EG995GIFM   Cold Transfer (Stage 1 To 3)  
EG995GIFM   Cold Transfer (Stage 3 To 4)  
EG995GIFM   Cold Transfer (Stage 4 To 5)  
EG995GIFM   Warm Transfer (Stage 5 To 6)

Answer 1

您似乎需要一个子查询来与之前终止的呼叫进行比较。该逻辑假定终止时间对于每个呼叫id是唯一的。

select 
    t3.topcallid, 
    case when t3.e_created < t4.e_created and t3.e_terminated > t4.e_terminated then 'Consult (Stage ' +  cast(t3.EmpNum as varchar(3)) + ' To ' + cast(t4.EmpNum as varchar(3)) + ')'
        when t3.e_terminated < t4.e_created then 'Cold Transfer (Stage ' +  cast(t3.EmpNum as varchar(3)) + ' To ' +  cast(t4.EmpNum as varchar(3)) + ')'
        when t3.e_terminated > t4.e_created then 'Warm Transfer (Stage ' +  cast(t3.EmpNum as varchar(3)) + ' To ' +  cast(t4.EmpNum as varchar(3)) + ')'
        end TransStatus
from
    [TransferTypeAnalysis] t3
    INNER JOIN
    (
        select 
            t1.topcallid, t1.empnum, t1.e_created, t1.e_terminated, max(t2.e_terminated) previous_term_dt
        FROM 
            [TransferTypeAnalysis] t1
            left join [TransferTypeAnalysis] t2
            on t1.topcallid=t2.topcallid and t1.empnum>t2.empnum
        GROUP BY t1.topcallid, t1.empnum, t1.e_created, t1.e_terminated
    ) as t4 on t3.topcallid = t4.topcallid and t3.e_terminated = t4.previous_term_dt

Answer 2

您还可以将MAX与OVER和ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING一起使用，以获取每行前任条目的最长终止时间。

如果您拥有每个条目的最大上次终止时间，则可以按照与当前代码相同的方式进行自我加入。

示例数据

DECLARE @TransferTypeAnalysis TABLE ( topcallid VARCHAR(20),e_created TIME,e_terminated TIME,empnum INT)

insert into @TransferTypeAnalysis
VALUES('EG995GIFM',   '16:22:40.933', '16:29:51.010', 1),
('EG995GIFM',   '16:25:59.827', '16:27:49.027', 2),
('EG995GIFM',   '16:30:07.453', '16:37:44.500', 3),
('EG995GIFM',   '16:38:01.677',  '16:59:30.777', 4),
('EG995GIFM',  '16:59:46.737', '17:16:48.397', 5),
('EG995GIFM',   '17:04:51.243', '17:29:21.620', 6);

<强>查询

SELECT ta.topcallid,
    CASE WHEN TA_Prev.e_created<TA.e_created and TA_Prev.e_terminated>TA.e_terminated THEN 'Consult'
        WHEN TA_Prev.e_terminated<TA.e_created THEN 'Cold Transfer'
        WHEN TA_Prev.e_terminated>TA.e_created THEN 'Warm Transfer'
        END  + ' (Stage '+  cast(TA_Prev.EmpNum AS VARCHAR(3)) + ' To ' + cast(TA.EmpNum AS VARCHAR(3)) + ')'TransStatus
FROM
(
SELECT *,MAX(e_terminated)OVER(PARTITION BY topcallid ORDER BY empnum ROWS BETWEEN UNBOUNDED PRECEDING AND 1 PRECEDING) as max_term
FROM @TransferTypeAnalysis
)TA
INNER JOIN @TransferTypeAnalysis TA_Prev
ON TA.topcallid = TA_Prev.topcallid AND TA.max_term = TA_Prev.e_terminated AND TA.empnum > TA_Prev.empnum

SQL Fiddle

Answer 3

好吧，我想我已经退缩了。

在您的加入条件中，将and ta.empnum<Trans.empnum更改为and ta.empnum+1=Trans.empnum

：d

我用来测试这个代码：

--CREATE TABLE #TMP (topcallid varchar(15), e_created time, e_terminated time, empnum int)
--INSERT INTO #TMP VALUES ('EG995GIFM', '16:22:40.933', '16:29:51.010', 1)
--INSERT INTO #TMP VALUES ('EG995GIFM', '16:25:59.827', '16:27:49.027', 2)
--INSERT INTO #TMP VALUES ('EG995GIFM', '16:30:07.453', '16:37:44.500', 3)
--INSERT INTO #TMP VALUES ('EG995GIFM', '16:38:01.677', '16:59:30.777', 4)
--INSERT INTO #TMP VALUES ('EG995GIFM', '16:59:46.737', '17:16:48.397', 5)
--INSERT INTO #TMP VALUES ('EG995GIFM', '17:04:51.243', '17:29:21.620', 6)

select ta.topcallid,
    case when ta.e_created<Trans.e_created and ta.e_terminated>Trans.e_terminated then 'Consult (Stage ' +  cast(TA.EmpNum as varchar(3)) + ' To ' + cast(Trans.EmpNum as varchar(3)) + ')'
        when ta.e_terminated<Trans.e_created then 'Cold Transfer (Stage ' +  cast(TA.EmpNum as varchar(3)) + ' To ' +  cast(Trans.EmpNum as varchar(3)) + ')'
        when ta.e_terminated>Trans.e_created then 'Warm Transfer (Stage ' +  cast(TA.EmpNum as varchar(3)) + ' To ' +  cast(Trans.EmpNum as varchar(3)) + ')'
        end TransStatus
FROM #TMP TA
join #TMP Trans
    on TA.topcallid=Trans.topcallid 
    and ta.empnum+1=Trans.empnum

order by TA.topcallid,ta.empnum

Answer 4

试试这个。它基本上做了一次滞后来获得咨询，然后放弃它们并再次进行以获得转移，然后组合表格。

SELECT *
,CASE 
    WHEN lag(e_terminated) OVER (
            PARTITION BY topcallID ORDER BY e_created
            ) IS NULL
        THEN NULL
    WHEN lag(e_terminated) OVER (
            PARTITION BY topcallID ORDER BY e_created
            ) > e_terminated
        THEN 'Consult ' + cast(lag(EmpNum) OVER (
                    PARTITION BY topcallID ORDER BY e_created
                    ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
    WHEN lag(e_terminated) OVER (
            PARTITION BY topcallID ORDER BY e_created
            ) < e_created
        THEN 'Cold Transfer ' + cast(lag(EmpNum) OVER (
                    PARTITION BY topcallID ORDER BY e_created
                    ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
    ELSE 'Warm Transfer ' + cast(lag(EmpNum) OVER (
                PARTITION BY topcallID ORDER BY e_created
                ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
    END AS StatusTemp
INTO #temp1
FROM MyTable

SELECT a.topcallID
,coalesce(b.StatusTemp2, a.StatusTemp) AS TransStatus
FROM #temp1 a
LEFT JOIN (
SELECT *
    ,CASE 
        WHEN lag(e_terminated) OVER (
                PARTITION BY topcallID ORDER BY e_created
                ) IS NULL
            THEN NULL
        WHEN lag(e_terminated) OVER (
                PARTITION BY topcallID ORDER BY e_created
                ) > e_terminated
            THEN 'Consult ' + cast(lag(EmpNum) OVER (
                        PARTITION BY topcallID     ORDER BY e_created
                        ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
        WHEN lag(e_terminated) OVER (
                PARTITION BY topcallID ORDER BY e_created
                ) < e_created
            THEN 'Cold Transfer ' + cast(lag(EmpNum) OVER (
                        PARTITION BY topcallID ORDER BY e_created
                        ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
        ELSE 'Warm Transfer ' + cast(lag(EmpNum) OVER (
                    PARTITION BY topcallID ORDER BY e_created
                    ) AS VARCHAR) + ' to ' + cast(empnum AS VARCHAR)
        END AS StatusTemp2
FROM #temp1
WHERE StatusTemp NOT LIKE 'Consult%'
    OR StatusTemp IS NULL
) b
ON a.empNum = b.empnum
    AND a.topcallID = b.topCallID
where coalesce(b.StatusTemp2, a.StatusTemp) is not null

SQL Server：与组中的下一个X进行比较

4 个答案: