Question

我正在尝试选择第一行，然后跳过X下一行，然后在一个查询中选择rest。例如，如果我在表中有（a，b，c，d，e），我需要选择“a”（第一行）然后跳过X = 2行（“b”，“c”），然后选择rest，这是“d”和“e”，都在一个查询中。结果将是a，d，e

Answer 1

尝试

select *
from
(
  select *, @rank := @rank + 1 as rank
  from your_table
  cross join (select @rank := 0) r
  order by colA
) tmp
where rank = 1
or rank > 3

或

select * from your_table 
order by colA 
limit 1 
union all 
select * from your_table 
order by colA 
limit 4, 9999999

Answer 2

您可以使用变量生成行号：

select 
  YourField,
  YourOtherField
from
(
  select id,
    YourField,
    YourOtherField,
    @row := @row + 1 as rownum
  from YourTable
  cross join (select @row:=0) c
  order by YourField -- The field you want to sort by when you say 'first' and 'fourth'
) d
where
  rownum = 1 or rownum >= 4

MySQL选择第一行然后跳过几个

2 个答案: