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CREATE TABLE mytable( A INTEGER NOT NULL ,B INTEGER NOT NULL ,C INTEGER NOT NULL ); INSERT INTO mytable(A,B,C) VALUES (1,3,5); INSERT INTO mytable(A,B,C) VALUES (1,6,3); INSERT INTO mytable(A,B,C) VALUES (4,7,6); INSERT INTO mytable(A,B,C) VALUES (2,4,3);
select sec, sum(tab = 'a') a, sum(tab = 'b') b, sum(tab = 'c') c from ( select 'a' tab, a sec from mytable union all select 'b', b from mytable union all select 'c', c from mytable ) t group by sec order by sec
sec
a
b
c
1
2
0
0
2
1
0
0
3
0
1
2
4
1
1
0
5
0
0
1
6
0
1
1
7
0
1
0