php - mysql命令select from id to id进行搜索

Question

我想做的是从我的数据库中选择视频，VID = 1 和最大 VID = 25000，我有 400k 视频，但我不想全部开始，所以我需要选择这种方式，我做这个命令对于搜索脚本，但我如何看待它不起作用......希望有人可以帮助我解决这个问题

用于搜索的 MySql 命令（这个命令是为了告诉我找到了多少视频）：

  select 
  count(*) as num 
  from 
    video 
 where 
    VID BETWEEN 1 AND 25000 
 AND 
    title LIKE '%key1%' 
 or 
    title LIKE '%key2%' 
 or 
    title LIKE '%key3%' 
 or 
    title LIKE '%key4%' 

Answer 1

我认为您需要通过在 AND 子句中添加括号来使用运算符优先级

   select 
    count(*) as num 
    from 
        video 
    where 
        VID BETWEEN 1 AND 25000 
    AND 
        (title LIKE '%key1%' 
    or 
        title LIKE '%key2%' 
    or 
        title LIKE '%key3%' 
    or 
        title LIKE '%key4%' );

Answer 2

添加你LIKE的括号（），尝试做：

select count(some_id) as num from video where 
VID >= 1 AND VID <= 25000 AND 
(title LIKE '%key1%' or title LIKE '%key2%' or title LIKE '%key3%' or title LIKE '%key4%')

Answer 3

试试下面：

select count(*) as num from video where VID BETWEEN 1 AND 25000 AND (title LIKE '%key1%' or title LIKE '%key2%' or title LIKE '%key3%' or title LIKE '%key4%') 

Answer 4

只是所有标题比较都设置在括号中。

select 
  count(*) as num 
  from 
    video 
 where 
    VID BETWEEN 1 AND 25000 
 AND (
    title LIKE '%key1%' 
 or 
    title LIKE '%key2%' 
 or 
    title LIKE '%key3%' 
 or 
    title LIKE '%key4%' 
)

Answer 5

尝试这个

 SELECT count(title) as num 
 FROM video 
 WHERE vid <= 25000 
 AND (title LIKE '%key1%' OR title LIKE '%key2%' OR title LIKE '%key3%' OR title LIKE '%key4%')

Answer 6

您的 between 做得很好，真正的问题是您当前的脚本是这样执行的，因为 AND 运算符的优先级高于 OR：

select 
count(*) as num 
from 
  video 
where 
  (VID BETWEEN 1 AND 25000 
AND 
  title LIKE '%key1%')
or 
  title LIKE '%key2%' 
or 
  title LIKE '%key3%' 
or 
  title LIKE '%key4%'

所以你需要做的是像这样改变它：

select 
count(*) as num 
from 
  video 
where 
  VID BETWEEN 1 AND 25000 
AND (
  title LIKE '%key1%'
or 
  title LIKE '%key2%' 
or 
  title LIKE '%key3%' 
or 
  title LIKE '%key4%' )

Answer 7

尝试这个

select 
    count(if(vid between 1 and 25000, 1, 0)) as totalvideocnt
from
    video
where
    (title like '%key1%' or title like '%key2%' or title like '%key3%' or title like '%key4%')