Reputation: 2197
Let's say we have tables: t1(_id, url)
, t2(_id ,url)
, t3(_id, url)
, ...
I wanna get all url from tables:
select url from t1 union select url from t2 union select url from t3 union ...
It's fine, but too long if I have 3 more tables. So how can I get all url
in all table?
Upvotes: 0
Views: 87
Reputation:
If you need data from all tables, you must name all tables somewhere in the FROM
clause. SQLite has no way of knowing wich tables you want to SELECT
from if you don't name them.
Upvotes: 1