SQL子查询排除了一些元素

时间:2018-04-10 21:08:34

标签: sql select subquery

我想返回类型为6,类型为7或类型为5的元素。对于同一个register_document_id,它们中的任何一个都不具有类型1或2。

register_document:

id        register_document_id   type_document
0         10                      5
1         10                      6
2         10                      1
3         15                      6 
4         15                      7              
5         17                      5
6         18                      2
7         18                      1

在该示例中,我想仅返回其type_document具有值6,7或5由register_document_id分组的行。通过相同的register_document_id,我想排除类型为2和1的那些。

输出查询:

  register_document_id     type_Document
         15                     6
         15                     7
         17                     5




select x.register_document_id,x.type_document
from register_document x
where x.type_document= 6 or x.type_document = 7 or x.type_document = 5 AND NOT EXISTS (
    SELECT *
    FROM register y
    WHERE y.number_id = x.number_document AND (y.type_document <> '1' <> y.type_document <> '2'
   )
 group by x.register_document_id,x.type_document;

1 个答案:

答案 0 :(得分:0)

您需要in!查询应如下所示:

select rd.register_document_id, rd.type_document
from register_document rd
where rd.type_document in (5, 6, 7) and
      not exists (select 1
                  from register_document rd2
                  where rd2.number_id = rd.number_document and
                        rd2.type_document in (1, 2)
                 );