I am looking for an answer for the following question
I have a database containing 3 following tables:
TB-001_ISB
TB-002_ISDB
TI-003_ISBDB
The data under table TB-001_ISB are
ISB_No ISB_Ad
121XS9060301 ANKARA CANKAYA
122CV9061501 ANKARA YILDIZ
123BN9062081 ANKARA KIZILAY
124GH8709034 ANKARA MAMAK
The data under TB-002_ISDB are
ISDB_ID ISDB_Sit
F-10-01-MM Factory Production
F-20-01-MG Factory Quality
F-30-01-FM Site
The data under TI-003_ISBDB are
ISBDB_No ISBDB_ISDB_ID 开发者_Go百科 ISBDB_Pers ISBDB_Date
121XS9060301 F-10-01-MM 1234 01.01.2010
121XS9060301 F-20-01-MG 1234 02.01.2010
121XS9060301 F-30-01-FM 4321 03.01.2010
121XS9060301 F-20-01-MG 6785 04.01.2010
122CV9061501 F-10-01-MM 1234 01.03.2010
122CV9061501 F-20-01-MG 1234 02.03.2010
123BN9062081 F-20-01-MG 4321 03.10.2010
123BN9062081 F-30-01-FM 6785 04.10.2010
I need a query to get the following output:
ISBDB_No ISB_Ad ISDB_Sit ISBDB_Pers ISBDB_Date
121XS9060301 ANKARA CANKAYA Factory Quality 6785 04.01.2010
122CV9061501 ANKARA YILDIZ Factory Quality 1234 02.03.2010
123BN9062081 ANKARA KIZILAY Site 6785 04.10.2010
So basically, I want the results to be sorted by ISBDB_Date and taking the max (ISBDB_Date) In order to do so, I wrote the following query
SELECT [ISB_No], [ISB_Ad], [ISDB_Sit], [ISBDB_Pers],
(SELECT (Max([ISBDB_Date])
FROM [TI-003_ISBDB]
GROUP BY [ISBDB_No])
FROM (([TB-001_ISB] INNER JOIN [TI-003_ISBDB] ON [ISB_No]=[ISBDB_No])
INNER JOIN [TB-002_ISDB] ON [ISDB_ID]=[ISBDB_ISDB_ID])
However, there are problems with this query. Can anybody help me? All of the efforts are highly appreciated...
Try something like this:
WITH CTE AS
(
SELECT *, ROW_NUMBER() OVER(PARTITION BY [ISBDB_No] ORDER BY [ISBDB_Date] DESC) Corr
FROM [TI-003_ISBDB]
)
SELECT B.*, [ISB_Ad], [ISDB_Sit]
FROM [TB-001_ISB] A
INNER JOIN (SELECT * FROM CTE WHERE corr = 1) B
ON A.[ISB_No] = B.[ISBDB_No]
INNER JOIN [TB-002_ISDB] C
ON C.[ISDB_ID] = B.[ISBDB_ISDB_ID]
SELECT
ISB_No
,ISB_Ad
,ISDB_Sit
,ISBDB_Pers
,ISBDB_Date
FROM [TB-001_ISB] AS isb
INNER JOIN [TI-003_ISBDB] AS isdbd ON isb.ISB_No=isdbd.ISBDB_No
INNER JOIN [TB-002_ISDB] AS isdb ON isdb.ISDB_ID=isdbd.ISBDB_ISDB_ID
WHERE isdbd.ISBDB_Date = (select MAX(isdbd1.ISBDB_Date) FROM [TI-003_ISBDB] AS isdbd1
WHERE isdbd.ISBDB_No = isdbd1.ISBDB_No)
ORDER BY isdbd.ISBDB_Date DESC
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