I'm dealing with the yelp dataset on sqlite3, and I have a schema as follows:
CREATE TABLE businesses
(business_id text primary key,
name text,
full_address text,
city text,
stars decimal(1,1),
ratings integer);
I run the following query:
select name, stars from businesses where ratings >= 400;
And I get the following:
Pho Kim Long |3.5
Pho So 1 |3.5
Ichiza |4
...
Guy Fieri |3.5
Giada |4
If I run:
select name, min(stars) from businesses where ratings >= 400;
I get The Quad Las Vegas Resort & Casino|2
But if I run:
select name
from (select name, min(stars)
from businesses
where ratings >= 400);
I get Giada.
I know that there's a way to do this with LIMIT X, but why does this occur in the first place? Is there something about the SQLite parser that I'm neglecting?
Aucun commentaire:
Enregistrer un commentaire