I have a script storing user generated tags ('keywords') in a database for each added video upload, however it places multiple keywords per item in the same keyword column, space separated. I'm not sure how this can be counted correctly. Clearly I'm no expert.
I have a table called ' video ', then within it
Vid keyword
------ -----------
1 cars
2 Cars Audi
3 Boats
4 Trains
5 Aircraft
Is there a way to set it so the spaced value is counted separately?
If I do
SELECT keyword FROM video ORDER BY keyword ASC LIMIT 200
It returns
1. Aircraft
2. Boats
3. Cars Audi
4. Trains
Is there a way to have it return;
1. Aircraft
2. Audi
3. Boats
4. Cars
5. Trains
And individually recognize the multiple spaced keywords in certain columns.
Thanks!
使用这种表结构很难做到这一点...您需要使用keyword
和video_id
创建一个新表 。此表将具有一个primary key
一个foreign key as video_id
和一个keyword field
,该keyword field
只能存储一个关键字
try that :
select vid, substring_index(Keyword, ' ', -1) as item1
from video
group by item1
order by item1
I do not think MySQL alone is capable of doing such a thing. You either need to add some script (I dont know if you are using a script or not) or change the structure of the table.
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