可以在一个SQL查询中完成吗？

Question

表索引的字段名

为名称的给定值“NAME1”给我，行以及N行前N行之后（按字母顺序）

Answer 1

以下让你与名称的行= 'name4'，之前的两行以及之后的两行。

drop table t; 

create table t(
    name varchar(20) 
    ,primary key(name) 
); 

insert into t(name) values('name1'); 
insert into t(name) values('name2'); 
insert into t(name) values('name3'); 
insert into t(name) values('name4'); 
insert into t(name) values('name5'); 
insert into t(name) values('name6'); 
insert into t(name) values('name7'); 

commit; 

(select name from t where name = 'name4') 
    union all 
(select name from t where name > 'name4' order by name asc limit 2) 
    union all 
(select name from t where name < 'name4' order by name desc limit 2); 


+-------+ 
| name | 
+-------+ 
| name1 | 
| name2 | 
| name4 | 
| name5 | 
| name6 | 
+-------+ 

编辑：由cyberkiwi如指出的（否则我会得到在错误的结束“第一次” 2项） 新增降序排列。

Answer 2

在两个select语句中是否用你想要的N替换了第5个数字，并更改表名，这将做到这一点。用正确的列名称替换星号。让我知道你是否有任何问题。

select * from 
    (
     Select * 
     ,row_number() over (order by firstname desc) as 'rowNumber' 
     from attendees 
    ) as temp 
where rowNumber between 
(
    select rownumber-1 
    from 
     (
      Select *, row_number() over (order by firstname desc) as 'rowNumber' 
      from attendees 
     ) as temp 
    where firstname = 'name1') AND (
    select rownumber+1 
    from 
     (
      Select *, row_number() over (order by firstname desc) as 'rowNumber' 
      from attendees 
     ) as temp 
    where firstname = 'name1')