How calculate the percentage of area

[raf]

Hi,
I have 4 tables:

Tab AREA_TI

LS_ID		FL	AREA
EMS00046	P01	2.995,09
EMS00046	P02	0,78
EMS00046	PTE	1.435,48
EMS00046	S01	1.684,80
EMS00046	S02	1.694,12
EMS00050	P01	1.111,60
EMS00050	P02	1.054,16
EMS00050	P03	1.117,05
EMS00050	P04	1.087,24
EMS00050	P05	1.117,85
EMS00050	P06	646,99
EMS00050	P07	249,48
EMS00050	PTE	593,35
EMS00050	S01	91,15
EMS00011	P02	446,90
EMS00021	PTE	0,71

SUM AREA_TI is:

LS_ID		SUM(AREA)
EMS00011	446,90
EMS00021	0,71
EMS00046	7.810
EMS00050	7.068

Tab AREA_T0

LS_ID		FL	AREA
EMS00046	PTE	15,48
EMS00050	PTE	15,33
00001156	P01	3.379,82
00001156	P02	3.731,25
00001156	P03	2.686,88
00001156	PTE	2.279,49
00001156	S01	7.341,05

SUM AREA_T0 is:

LS_ID		SUM(AREA)
00001156	19.418
EMS00046	15,48
EMS00050	15,33

Tab AREA_FI

LS_ID		FL	AREA
04600411	P01	785,64
04600411	P02	829,72
04600411	P03	832,36
04600411	PCO	11,88
04600411	PTE	473,91
04600411	S01	1.740,42

SUM AREA_FI is:

LS_ID		SUM(AREA)
04600411	4.673,93

Tab AREA_EM

LS_ID		FL	AREA
00307374	P01	4.269,59
00307374	P02	8.362,79
00307374	P03	770,96
00307374	PTE	7.292,11
00307374	S01	1.425,90
00602037	P01	3.364,47
00602037	PTE	9.764,71
00602037	S01	75,17

SUM AREA_EM is:

LS_ID		SUM(AREA)
00307374	22.121
00602037	13.204

I'd like to get these results:

LS_ID	 AREA_TI AREA_T0 AREA_FI AREA_EM  AREA_TOT  PERC_T0   PERC_FI  PERC_TI   PERC_EM
EMS00011  446,90    0     0          0     446,90                          1             		
EMS00021   0,71     0     0          0     0,71	                           1
EMS00046  7810    15,48   0          0     7825,75  0,00197            0,99803 
EMS00050  7068    15,33   0          0     7083,33  0,00216            0,99784
00001156   0      19418   0          0     19418        1                                    

04600411   0        0     4673       0        4673                  1
00307374   0        0     0       22121    22121                                    1
00602037   0        0     0       13204    13204                                    1

PERC_T0=AREA_T0/AREA_TOT
PERC_FI=AREA_FI/AREA_TOT
PERC_TI=AREA_TI/AREA_TOT
PERC_EM=AREA_EM/AREA_TOT

I tried this:
CREATE OR REPLACE VIEW PERC_AREA ( LS_ID,
AREA_T0, AREA_FI, AREA_EM, AREA_TI,
AREA_TOT, PERC_T0, PERC_FI, PERC_TI,
PERC_EM ) AS
SELECT A.LS_ID,
SUM(nvl(A.AREA,0)),
SUM(nvl(B.AREA,0)),
SUM(nvl(C.AREA,0)),
SUM(nvl(D.AREA,0)),
SUM(NVL(A.AREA,0)+NVL(B.AREA,0)+NVL(C.AREA,0)+NVL(D.AREA,0)),
SUM(A.AREA)/SUM(NVL(A.AREA,0)+NVL(B.AREA,0)+NVL(C.AREA,0)+NVL(D.AREA,0)),
SUM(B.AREA)/SUM(NVL(A.AREA,0)+NVL(B.AREA,0)+NVL(C.AREA,0)+NVL(D.AREA,0)),
SUM(C.AREA)/SUM(NVL(A.AREA,0)+NVL(B.AREA,0)+NVL(C.AREA,0)+NVL(D.AREA,0)),
SUM(D.AREA)/SUM(NVL(A.AREA,0)+NVL(B.AREA,0)+NVL(C.AREA,0)+NVL(D.AREA,0))
FROM AREA_T0 A, AREA_FI B,AREA_TI C, AREA_EM D
WHERE A.LS_ID=B.LS_ID(+)
AND a.LS_ID=C.LS_ID(+)
AND a.LS_ID=D.LS_ID(+)
GROUP BY A.LS_ID

How can I create a oracle view to get percentage of area FOR ALL LS_ID present in the 4 tables??

Thanks!!!

[jmodic]

You need FULL OUTER JOIN for that. Check the 9i SQL manual for the syntax.

Or another option would be to union-all all four tables and then do your math from there. So the inline view you would use as a starting point would be something like:

select 'TI' AS tbl, LS_ID, SUM(AREA) AS area from area_ti
group by LS_ID
union all
select 'TO' AS tbl, LS_ID, SUM(AREA) AS area from area_to
group by LS_ID
union all
select 'FI' AS tbl, LS_ID, SUM(AREA) AS area from area_fi
group by LS_ID
union all
select 'EM' AS tbl, LS_ID, SUM(AREA) AS area from area_em
group by LS_ID