使用 generate_series() 删除行范围？

Question

To update every row in a table, I use this query (and it's working):

I wonder if I can use a similar notation for DELETE ?

Something like:

DELETE from test2
from generate_series(1, 1000) as idx
WHERE id = idx;

Won't work as the second FROM is invalid, of course. Any idea how to fix that?

What is the best practice for this kind of operation?

Answer 1

Use USING :

DELETE from test2 
       using generate_series(1, 1000) idx
       WHERE id = idx

Answer 2

What is the best practice for this kind of operation?

You can use generate_series() like Gordon demonstrates. This might even make sense for non-integer types or with an increment <> 1.
For simple cases, the simple query is superior, though:

DELETE FROM test2 
WHERE  id BETWEEN 1 AND 1000;