python - Sqlalchemy: Purpose of .all() -


this question has answer here:

what use of .all(). when following function 

def showrestaurants(): restaurants = session.query(restaurant) return render_template('restaurant.html',restaurants=restaurants)

returns same result function

def showrestaurants(): restaurants = session.query(restaurant).all() return render_template('restaurant.html',restaurants=restaurants)

for restaurant.html file

<html> <body> <h1> restaurants </h1>  {% x in restaurants %} </br>  {% endfor %} </body> </html>

first example returns query object , can apply additional methods on it, such all() - return results represented query list.

query object works on each row before give it, while second works on rows, before starting give them.


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