row_number() over(partition by
hemant_kJul 11 2008 — edited Jul 11 2008select decode(row_number() over(partition by a order by a),1, a) a, b, sum(del) del, sum(kol) kol, sum(viz) viz
22 from (select a,b,c,decode(c, 'kol', d) kol, decode(c,'del',d) del, decode(c,'viz',d) viz from t order by a, b, c)
23 group by a,b
where can i find documentation for this?