如何从数据库中获取对象及其后继对象?

时间:2018-07-09 16:49:01

标签: mysql sql database select

如何根据数据库中的值按某个值及其后继对象来获取对象?

更具体地说,我有表articles和列idnameorder。 我想获取具有特定order及其后继者的order值的对象。 我的查询应如何显示?

示例

数据:

id name order
1   A   14
2   B   27
3   C   18
4   D   86
5   E   39
6   F    2

奎尔:

FetchTwoByOrderASC(18) => (C,B) // 18 is C and the successor of 18 in this case is 28 which is B --> {(F,2)-(A,14)-(C,18)-(B,27)-(E,39)-(D,86)}
FetchTwoByOrderASC(39) => (E,D) // 39 is E and the successor of 39 in this case is 86 which is D --> {(F,2)-(A,14)-(C,18)-(B,27)-(E,39)-(D,86)}
FetchTwoByOrderASC(14) => (A,C) // 14 is A and the successor of 14 in this case is 18 which is C --> {(F,2)-(A,14)-(C,18)-(B,27)-(E,39)-(D,86)}

我使用mysql数据库。

1 个答案:

答案 0 :(得分:-1)

Select name from table where order>=given_order order by order limit 2 #mysql

 Select top (2) name from table where order>=given_order order by order #sqlserver