這兩天做了一個很BT的東西，傳過來的參數是B1_ALT_ID和一個循環的次數，那個循環的次數相當BT，是要找那個對應的時間點，我這里再畫個圖，大家清楚理解一下，它整個是一個workflow，是有很多項目的，一個INSPECTION做下來是有很多PROCESS的，它有一些的TASK的固定的STATUS是可以熱循環的，如下圖所示，一共熱循環了四次，如果1.2.3都沒問題，如1則可取1這個時間點及2這個時間點中間的符合條件的TASK即可。但是，如果是4呢，就只有大於4這個時間點，沒有小於的時間點；再者如果這個workflow總共就熱循環過一次，則它也是只有大於這個時間點，沒有小於的時間點，所以我們中間去做了一次判斷，如果是1或者是等於它的最大熱循環次數的時候給它的小於的時間點給到一個不可能的最大值如“1/1/9999”
SQL如下，紅色字體是關鍵~~我沒有重新做例子，直接把我自己的SQL貼上來的，有思路即可，其它的不重要，繼續加油~加涅個油~啊哦耶~~~~~
其實下面很多冗余的東西，還沒仔細整理，請大家忽略~~
WITH TMP1 AS
(select D.SERV_PROV_CODE,D.R3_ACT_TYPE_DES,D.R3_PROCESS_CODE,D.R3_ACT_STAT_COD,D.R3_ACT_STAT_DES
FROM sprocess C
INNER JOIN R3STATYP D
ON C.SERV_PROV_CODE = D.SERV_PROV_CODE
AND C.R1_PROCESS_CODE = D.R3_PROCESS_CODE
AND C.SD_PRO_DES = D.R3_ACT_TYPE_DES
where C.r1_process_code=(SELECT B.R1_PROCESS_CODE FROM B1PERMIT A INNER JOIN R3APPTYP B
ON A.B1_PER_GROUP = B.R1_PER_GROUP
AND A.B1_PER_TYPE = B.R1_PER_TYPE
AND A.B1_PER_SUB_TYPE = B.R1_PER_SUB_TYPE
AND A.B1_PER_CATEGORY = B.R1_PER_CATEGORY
AND A.SERV_PROV_CODE = B.SERV_PROV_CODE
WHERE A. B1_ALT_ID = '2013-PROJ-000001'
AND A.SERV_PROV_CODE = 'DENVER')
AND C.SERV_PROV_CODE = 'DENVER'
AND D.R3_ACT_STAT_FLG = 'L'),
TMP2 as
(SELECT T.SD_PRO_DES,
T.GA_LNAME,
T.GA_MNAME,
T.GA_FNAME,
T.SD_APP_DES SUL12,
T.G6_STAT_DD DATA13,
T.SD_COMMENT COM14,
A.SERV_PROV_CODE,
T.R1_PROCESS_CODE
FROM GPROCESS T, B1PERMIT A
WHERE T.SERV_PROV_CODE = A.SERV_PROV_CODE
AND T.B1_PER_ID1 = A.B1_PER_ID1
AND T.B1_PER_ID2 = A.B1_PER_ID2
AND T.B1_PER_ID3 = A.B1_PER_ID3
AND T.SERV_PROV_CODE = 'DENVER'
AND A.B1_ALT_ID = '2013-PROJ-000001'
AND T.REC_STATUS = 'A' AND T.SD_APP_DES IS NOT NULL
UNION
SELECT T.SD_PRO_DES T,
T.G6_ISS_LNAME,
T.G6_ISS_MNAME ,
T.G6_ISS_FNAME ,
T.SD_APP_DES SUL12,
T.SD_APP_DD DATA13,
T.SD_COMMENT COM14,
A.SERV_PROV_CODE,
T.R1_PROCESS_CODE
FROM GPROCESS_HISTORY T, B1PERMIT A
WHERE T.SERV_PROV_CODE = A.SERV_PROV_CODE
AND T.B1_PER_ID1 = A.B1_PER_ID1
AND T.B1_PER_ID2 = A.B1_PER_ID2
AND T.B1_PER_ID3 = A.B1_PER_ID3
AND T.SERV_PROV_CODE = 'DENVER'
AND A.B1_ALT_ID = '2013-PROJ-000001'
AND T.REC_STATUS = 'A' AND T.SD_APP_DES IS NOT NULL),
TMP3 AS(
SELECT TMP2.* ,ROW_NUMBER() OVER(ORDER BY DATA13) RNUM
FROM TMP2, TMP1
WHERE TMP1.SERV_PROV_CODE = TMP2.SERV_PROV_CODE
AND TMP1.R3_PROCESS_CODE = TMP2.R1_PROCESS_CODE
AND TMP1.R3_ACT_TYPE_DES = TMP2.SD_PRO_DES
AND TMP1.R3_ACT_STAT_DES = TMP2.SUL12
),
/*SELECT
CASE
WHEN (((SELECT MAX(RNUM) FROM TMP3)=1 AND 2=1) OR (SELECT MAX(RNUM) FROM TMP3) = 2) THEN
TO_DATE('1/1/9999','mm/dd/yyyy')
ELSE
(SELECT DATA13 FROM TMP3 WHERE RNUM = 2+1)
END ROW1,
CASE
WHEN (((SELECT MAX(RNUM) FROM TMP3)=1 AND 2=1) OR (SELECT MAX(RNUM) FROM TMP3) = 2) THEN
(SELECT MAX(DATA13) FROM TMP3)
ELSE
(SELECT DATA13 FROM TMP3 WHERE RNUM = 2)
END ROW2
FROM TMP3 WHERE 2<=
(SELECT MAX(RNUM) FROM TMP3) AND 2>0
AND ROWNUM < 2*/
TMP4 AS (SELECT
CASE
WHEN (((SELECT MAX(RNUM) FROM TMP3)=1 AND 2=1) OR (SELECT MAX(RNUM) FROM TMP3) = 2) THEN
TO_DATE('1/1/9999','mm/dd/yyyy')
ELSE
(SELECT DATA13 FROM TMP3 WHERE RNUM = 2+1)
END ROW1,
CASE
WHEN (((SELECT MAX(RNUM) FROM TMP3)=1 AND 2=1) OR (SELECT MAX(RNUM) FROM TMP3) = 2) THEN
(SELECT MAX(DATA13) FROM TMP3)
ELSE
(SELECT DATA13 FROM TMP3 WHERE RNUM = 2)
END ROW2
FROM TMP3 WHERE 2<=
(SELECT MAX(RNUM) FROM TMP3) AND 2>0
AND ROWNUM < 2)
SELECT T.SD_PRO_DES || REPLACE(REPLACE('(' || GA_LNAME || ',' || GA_MNAME || ' ' ||
GA_FNAME || ')',
' ',
''),
',',
', ') VIWP11,
T.SD_APP_DES SUL12,
T.G6_STAT_DD DATA13,
T.SD_COMMENT COM14
FROM GPROCESS T, B1PERMIT A
WHERE (T.SD_PRO_DES LIKE '%Review%' or T.SD_PRO_DES LIKE '%Referral%')
AND T.SD_PRO_DES NOT LIKE '%Review%/%Finalize%'
AND T.SERV_PROV_CODE = A.SERV_PROV_CODE
AND T.B1_PER_ID1 = A.B1_PER_ID1
AND T.B1_PER_ID2 = A.B1_PER_ID2
AND T.B1_PER_ID3 = A.B1_PER_ID3
AND T.SERV_PROV_CODE = 'DENVER'
AND A.B1_ALT_ID = UPPER('2013-PROJ-000001')
AND (A.B1_PER_GROUP || '/' || A.B1_PER_TYPE || '/' || A.B1_PER_SUB_TYPE || '/' ||
A.B1_PER_CATEGORY IN
('Development/Project/NA/NA',
'Development/Project/Concept Review/NA',
'Development/Project/Site Development Plan Review/NA',
'Development/Project/Trans Engr Plan Review/NA',
'ROW/ROW Land Use/Relinquishment/NA',
'ROW/ROW Land Use/Vacation/NA',
'ROW/ROW Land Use/Utility Project/NA',
'Development/Project/Site Development Plan Review/Subdivision',
'ROW/Project/Capital Improvement Project/NA',
'ROW/ROW Land Use/Major Encumbrance/NA',
'Development/Project/Storm and Sanitary Plan Review/NA') OR
A.B1_PER_GROUP || '/' || A.B1_PER_TYPE || '/' || A.B1_PER_SUB_TYPE =
'Development/Building/Log')
AND T.REC_STATUS = 'A'
AND T.SD_APP_DES IS NOT NULL
AND T.G6_STAT_DD >= (SELECT ROW2 FROM TMP4) AND T.G6_STAT_DD < (SELECT ROW1 FROM TMP4)
UNION
SELECT T.SD_PRO_DES || REPLACE(REPLACE('(' || G6_ISS_LNAME || ',' ||
G6_ISS_FNAME || ' ' || G6_ISS_MNAME || ')',
' ',
''),
',',
', ') VIWP11,
T.SD_APP_DES SUL12,
T.SD_APP_DD DATA13,
T.SD_COMMENT COM14
FROM GPROCESS_HISTORY T, B1PERMIT A
WHERE (T.SD_PRO_DES LIKE '%Review%' or T.SD_PRO_DES LIKE '%Referral%')
AND T.SD_PRO_DES NOT LIKE '%Review%/%Finalize%'
AND T.SERV_PROV_CODE = A.SERV_PROV_CODE
AND T.B1_PER_ID1 = A.B1_PER_ID1
AND T.B1_PER_ID2 = A.B1_PER_ID2
AND T.B1_PER_ID3 = A.B1_PER_ID3
AND T.SERV_PROV_CODE = 'DENVER'
AND A.B1_ALT_ID = UPPER('2013-PROJ-000001')
AND (A.B1_PER_GROUP || '/' || A.B1_PER_TYPE || '/' || A.B1_PER_SUB_TYPE || '/' ||
A.B1_PER_CATEGORY IN
('Development/Project/NA/NA',
'Development/Project/Concept Review/NA',
'Development/Project/Site Development Plan Review/NA',
'Development/Project/Trans Engr Plan Review/NA',
'ROW/ROW Land Use/Relinquishment/NA',
'ROW/ROW Land Use/Vacation/NA',
'ROW/ROW Land Use/Utility Project/NA',
'Development/Project/Site Development Plan Review/Subdivision',
'ROW/Project/Capital Improvement Project/NA',
'ROW/ROW Land Use/Major Encumbrance/NA',
'Development/Project/Storm and Sanitary Plan Review/NA') OR
A.B1_PER_GROUP || '/' || A.B1_PER_TYPE || '/' || A.B1_PER_SUB_TYPE =
'Development/Building/Log')
AND T.REC_STATUS = 'A'
AND SD_APP_DES IS NOT NULL
AND T.SD_APP_DD >= (SELECT ROW2 FROM TMP4) AND T.SD_APP_DD < (SELECT ROW1 FROM TMP4)
ORDER BY DATA13 DESC