我试图根据票据是否表明发生了特定事件来标记票证。我遇到的问题是，表明发生这种情况的特定值可能在故障单上的25个字段中的任何一个中，并且我当前的逻辑需要相当长的时间才能完成（通常> 45分钟）如果它完全完成（我们的DBA偶尔会因为占用太多CPU或者PJI太高而杀死它）。目前我使用以下内容尝试标记门票：
active所以我的问题是，每个事件CK切换到JOINing是否更好（这是一个关键值＆amp;是AOD_CKS上的索引）？或者我应该少一些冗长的＆amp;尝试拆分工作（即为字段1-6加入一次，为7-13加入另一个表等）＆amp;然后将这4张桌子加在一起？
非常感谢任何帮助！
答案 0 :(得分：0)
我最终将JOIN分成3个部分，然后按如下方式合并数据：
----------------------------------------------------------------------------
-- FLAG ADDICTION CLAIMS
----------------------------------------------------------------------------
CREATE VOLATILE TABLE
--DROP TABLE
I_FCT_1
AS (
SELECT
I_FCT.Claim_Nbr
, I_FCT.Plan_Dim_CK
, CASE
WHEN I_FCT.Diag1_CK = AD.Diag_CK THEN '1'
WHEN I_FCT.Diag2_CK = AD.Diag_CK THEN '2'
WHEN I_FCT.Diag3_CK = AD.Diag_CK THEN '3'
WHEN I_FCT.Diag4_CK = AD.Diag_CK THEN '4'
WHEN I_FCT.Diag5_CK = AD.Diag_CK THEN '5'
WHEN I_FCT.Diag6_CK = AD.Diag_CK THEN '6'
WHEN I_FCT.Diag7_CK = AD.Diag_CK THEN '7'
WHEN I_FCT.Diag8_CK = AD.Diag_CK THEN '8'
ELSE NULL
END AS AOD_Diag
FROM
I_FCT
LEFT JOIN ADD_CKS AS AD
ON (AD.Diag_CK = I_FCT.Diag1_CK
OR AD.Diag_CK = I_FCT.Diag2_CK
OR AD.Diag_CK = I_FCT.Diag3_CK
OR AD.Diag_CK = I_FCT.Diag4_CK
OR AD.Diag_CK = I_FCT.Diag5_CK
OR AD.Diag_CK = I_FCT.Diag6_CK
OR AD.Diag_CK = I_FCT.Diag7_CK
OR AD.Diag_CK = I_FCT.Diag8_CK
)
)
WITH DATA PRIMARY INDEX (Claim_Nbr)
ON COMMIT PRESERVE ROWS;
----------------------------------------------------------------------------
CREATE VOLATILE TABLE
--DROP TABLE
I_FCT_2
AS (
SELECT
I_FCT.Claim_Nbr
, I_FCT.Plan_Dim_CK
, CASE
WHEN I_FCT.Diag9_CK = AD.Diag_CK THEN '9'
WHEN I_FCT.Diag10_CK = AD.Diag_CK THEN '10'
WHEN I_FCT.Diag11_CK = AD.Diag_CK THEN '11'
WHEN I_FCT.Diag12_CK = AD.Diag_CK THEN '12'
WHEN I_FCT.Diag13_CK = AD.Diag_CK THEN '13'
WHEN I_FCT.Diag14_CK = AD.Diag_CK THEN '14'
WHEN I_FCT.Diag15_CK = AD.Diag_CK THEN '15'
WHEN I_FCT.Diag16_CK = AD.Diag_CK THEN '16'
ELSE NULL
END AS AOD_Diag
FROM
I_FCT
LEFT JOIN ADD_CKS AS AD
ON (AD.Diag_CK = I_FCT.Diag9_CK
OR AD.Diag_CK = I_FCT.Diag10_CK
OR AD.Diag_CK = I_FCT.Diag11_CK
OR AD.Diag_CK = I_FCT.Diag12_CK
OR AD.Diag_CK = I_FCT.Diag13_CK
OR AD.Diag_CK = I_FCT.Diag14_CK
OR AD.Diag_CK = I_FCT.Diag15_CK
OR AD.Diag_CK = I_FCT.Diag16_CK
)
)
WITH DATA PRIMARY INDEX (Claim_Nbr)
ON COMMIT PRESERVE ROWS;
----------------------------------------------------------------------------
CREATE VOLATILE TABLE
--DROP TABLE
I_FCT_3
AS (
SELECT
I_FCT.Claim_Nbr
, I_FCT.Plan_Dim_CK
, CASE
WHEN I_FCT.Diag17_CK = AD.Diag_CK THEN '17'
WHEN I_FCT.Diag18_CK = AD.Diag_CK THEN '18'
WHEN I_FCT.Diag19_CK = AD.Diag_CK THEN '19'
WHEN I_FCT.Diag20_CK = AD.Diag_CK THEN '20'
WHEN I_FCT.Diag21_CK = AD.Diag_CK THEN '21'
WHEN I_FCT.Diag22_CK = AD.Diag_CK THEN '22'
WHEN I_FCT.Diag23_CK = AD.Diag_CK THEN '23'
WHEN I_FCT.Diag24_CK = AD.Diag_CK THEN '24'
WHEN I_FCT.Diag25_CK = AD.Diag_CK THEN '25'
ELSE NULL
END AS AOD_Diag
FROM
I_FCT
LEFT JOIN ADD_CKS AS AD
ON (AD.Diag_CK = I_FCT.Diag17_CK
OR AD.Diag_CK = I_FCT.Diag18_CK
OR AD.Diag_CK = I_FCT.Diag19_CK
OR AD.Diag_CK = I_FCT.Diag20_CK
OR AD.Diag_CK = I_FCT.Diag21_CK
OR AD.Diag_CK = I_FCT.Diag22_CK
OR AD.Diag_CK = I_FCT.Diag23_CK
OR AD.Diag_CK = I_FCT.Diag24_CK
OR AD.Diag_CK = I_FCT.Diag25_CK
)
)
WITH DATA PRIMARY INDEX (Claim_Nbr)
ON COMMIT PRESERVE ROWS;
---------------------------------------------------------------------------
CREATE VOLATILE TABLE
--DROP TABLE
FCT
AS (
SELECT
I_FCT.Claim_Nbr
, I_FCT.Plan_Dim_CK
, I_FCT.ADMISSION_DATE
, I_FCT.DISCHARGE_DATE
, I_FCT.ADMISSION_DATE_DIM_CK
, I_FCT.Proc3_CK
, I_FCT.Proc4_CK
, I_FCT.Proc5_CK
, I_FCT.Proc6_CK
, I_FCT.Proc7_CK
, I_FCT.Bill_Type
, CASE
WHEN C1.AOD_Diag IS NOT NULL THEN C1.AOD_Diag
WHEN C2.AOD_Diag IS NOT NULL THEN C2.AOD_Diag
WHEN C3.AOD_Diag IS NOT NULL THEN C3.AOD_Diag
ELSE NULL
END AS AOD_Diag
FROM
I_FCT
JOIN I_FCT_1 AS C1
ON C1.Claim_Nbr = I_FCT.Claim_Nbr
AND C1.Plan_Dim_CK = I_FCT.Plan_Dim_CK
JOIN I_FCT_2 AS C2
ON I_FCT.Claim_Nbr = C2.Claim_Nbr
AND I_FCT.Plan_Dim_CK = C2.Plan_Dim_CK
JOIN I_FCT_3 AS C3
ON I_FCT.Claim_Nbr = C3.Claim_Nbr
AND I_FCT.Plan_Dim_CK = C3.Plan_Dim_CK
)
WITH DATA PRIMARY INDEX (Claim_Nbr)
ON COMMIT PRESERVE ROWS;