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drop table if exists t1;
create table t1(c1 int primary key, c2 int);
insert into t1 values(7,3),(8,3),(1,1),(2,0),(3,1),(4,0),(5,2),(6,2);
select c1 as a1,c2 as a2 from t1 group by a2 order by a1;
a1 a2
1 1
2 0
5 2
7 3
select c1 as a1,c2 as a2 from t1 group by a1 order by a2;
a1 a2
2 0
4 0
1 1
3 1
5 2
6 2
7 3
8 3
select c1 as a1,c2 as a2 from t1 group by a2 order by a2;
a1 a2
2 0
1 1
5 2
7 3
select c1 as a1,c2 as a2 from t1 group by a1 order by a1;
a1 a2
1 1
2 0
3 1
4 0
5 2
6 2
7 3
8 3
select c1 as a1,c2 as a2 from t1 order by a2;
a1 a2
2 0
4 0
1 1
3 1
5 2
6 2
7 3
8 3
select c1 as a1,c2 as a2 from t1 order by a1;
a1 a2
1 1
2 0
3 1
4 0
5 2
6 2
7 3
8 3
select c1 as a1,c2 as a2 from t1 group by a2 having a2>0 order by a1;
a1 a2
1 1
5 2
7 3
select c1 as a1,c2 as a2 from t1 group by a2 having a2>0 order by a2;
a1 a2
1 1
5 2
7 3
select c1 as a1,c2 as a2 from t1 group by a2 having a1>0 order by a1;
a1 a2
1 1
2 0
5 2
7 3
select c1 as a1,c2 as a2 from t1 group by a2 having a1>0 order by a2;
a1 a2
2 0
1 1
5 2
7 3
select c1+c2 as total from t1 order by total;
total
2
2
4
4
7
8
10
11
select c1, c1+c2 as total from t1 group by total order by c1;
c1 total
1 2
3 4
5 7
6 8
7 10
8 11
select c1, c1+c2 as total from t1 group by total having c1>2 order by c1 desc;
c1 total
8 11
7 10
6 8
5 7
4 4
select c1 as a1, c2 as a2 from t1 where c1>1;
a1 a2
2 0
3 1
4 0
5 2
6 2
7 3
8 3
select c1 as a1, c2 as a2 from t1 where c2>1;
a1 a2
5 2
6 2
7 3
8 3
select c1,c1+c2 as a1 from t1 where c1+c2>2;
c1 a1
3 4
4 4
5 7
6 8
7 10
8 11