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" 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UNION/UNION ALL 并集
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" 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INTERSECT 交集
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" 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MINUS 差集
我们知道group by 增强中 http://www.cnblogs.com/liuwt365/p/4181256.html
group by rollup(a,b)
=
group by a,b
+
group by a
+
group by null
所以我们应该写sql语句应该为:
SQL> select deptno,job,sum(sal) from emp group by deptno,job
2 union
3 select deptno,sum(sal) from emp group by deptno
4 union
5 select sum(sal) from emp group by null; select deptno,job,sum(sal) from emp group by deptno,job
union
select deptno,sum(sal) from emp group by deptno
union
select sum(sal) from emp group by null ORA-01789: 查询块具有不正确的结果列数
但是出错了,这是集合运算符的限制
1. 参与运算的各个集合必须列数相同 且类型一致
2. 采用第一个集合的表头作为最后的表头
3. 如果排序,必须在每个集合后使用相同的order by
4. 可以使用括号
SQL> select deptno,job,sum(sal)
2 from emp
3 group by rollup(deptno,job)
4 ; DEPTNO JOB SUM(DEPTNO)
------ --------- -----------
10 CLERK 10
10 MANAGER 10
10 PRESIDENT 10
10 30
20 CLERK 20
20 ANALYST 20
20 MANAGER 20
20 60
30 CLERK 30
30 MANAGER 30
30 SALESMAN 120
30 180
270 13 rows selected SQL> select deptno,job,sum(sal) from emp group by deptno,job
2 union
3 select deptno,to_char(null),sum(sal) from emp group by deptno
4 union
5 select to_number(null),to_char(null),sum(sal) from emp group by null; DEPTNO JOB SUM(SAL)
---------- --------- ----------
10 CLERK 1400
10 MANAGER 2450
10 PRESIDENT 5000
10 8850
20 ANALYST 3000
20 CLERK 800
20 MANAGER 2975
20 6775
30 CLERK 950
30 MANAGER 2850
30 SALESMAN 5600
30 9400
25025 13 rows selected