the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note If no constructor is passed to objects() the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey')

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note If no constructor is passed to objects() the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey')

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note: If no constructor is passed to objects() the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note: If no constructor is passed to objects() the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note If no constructor is passed to objects() the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey')

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') pragmas=(('foreign_keys', 'on'),) when you instantiate SqliteDatabase. Performing simple joins As an exercise in learning how to perform joins with Peewee, let’s write a query to print out all the tweets by “huey”. To row in db.batch_commit(row_data, 100): User.create(**row) An alternative that may be more efficient is to batch the data into a multi-value INSERT statement (for example, using Model.insert_many()):

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db 'on'),) when you instantiate SqliteDatabase. 1.9.2 Performing simple joins As an exercise in learning how to perform joins with Peewee, let’s write a query to print out all the tweets by “huey”. To for row in db.batch_commit(row_data, 100): User.create(**row) An alternative that may be more efficient is to batch the data into a multi-value INSERT statement (for example, using Model.insert_many()):

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note If no constructor is passed to objects() row in db.batch_commit(row_data, 100): User.create(**row) An alternative that may be more efficient is to batch the data into a multi-value INSERT statement (for example, using Model.insert_many()):

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') with db returned by cursor. Using the above helpers returns a simpler data-structure which can be much more efficient when iterating over large or very-complex queries. Note: If no constructor is passed to objects() for row in db.batch_commit(row_data, 100): User.create(**row) An alternative that may be more efficient is to batch the data into a multi-value INSERT statement (for example, using Model.insert_many()):

the savepoint() method. Savepoints must occur within a transaction, but can be nested arbitrarily deep. with db.transaction() as txn: with db.savepoint() as sp: User.create(username='mickey') ctures-in-sqlite-using- python-and-the-transitive-closure-extension/] extension, which allows efficient querying of heirarchical tables. sqlite_ext API notes class SqliteExtDatabase(database, pragmas=() Parameters: You can specify arbitrarily complex joins, though for more complex queries it may be more efficient to use prefetch(). In short, try both and see what works best for your data-set. Note For more