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It returns an instance based on the given primary key identifier providing direct access to the identity map of the owning Session.
all() will return all records which match our query as a list of objects.
SQLAlchemy supports two types of caches: Caching the result set so that repeatedly running the same query hits the cache instead of the database. It uses dogpile which supports many different backends, including memcached , redis , and basic flat files.
for sqlalchemy >= 1.0.13
Use the limit method.
query(Model).filter(something).limit(5).all()
Alternative syntax
query.(Model).filter(something)[:5].all()
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