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select * FROM ( SELECT 1 rn, 1 V from dual UNION ALL Select 2 rn, 2 V from dual UNION ALL Select 3 rn, 4 V from dual UNION ALL Select 4 rn, 2 V from dual UNION ALL Select 5 rn, 3 V from dual ) MODEL DIMENSION BY (rn) MEASURES ( V, 0 AS c) RULES ( c[1] = V[1], c[rn>1] = CASE MOD(cv(rn), 2) WHEN 0 THEN c[cv()-1] / V[cv()] ELSE c[cv()-1] * V[cv()] END ) order by rn;
RN
V
C
1
1
1
2
2
.5
3
4
2
4
2
1
5
3
3