e’) # 2.0 Tweet.select().join(User).where(User.username == ’charlie’) Get me a list of tweets ordered by the authors username, then newest to oldest: # 1.0 -- this is one where there are like 10 ways aggregate functions like count and max • columns, which may be selected, joined on, grouped by, ordered by, used as parameters for functions and aggregates, etc. • python objects to use as query parameters things like: Employee.select().where(Employee.salary < (Employee.tenure * 1000) + 40000) Note: I totally went crazy with operator overloading. If you’re interested in looking, the QueryCompiler.parse_expr

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many iterate without caching each model returned, using much less memory when iterating over large result sets. # Let's assume we've got 10 million stat objects to dump to a csv file. stats = Stat.select() # presented below. term (str) – Search term to use. weights – A list of weights for the columns, ordered with respect to the column’s position in the table. Or, a dictionary keyed by the field or field

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many iterate without caching each model returned, using much less memory when iterating over large result sets. # Let's assume we've got 10 million stat objects to dump to a csv file. stats = Stat.select() # Parameters • term (str) – Search term to use. • weights – A list of weights for the columns, ordered with respect to the column’s po- sition in the table. Or, a dictionary keyed by the field or field

iterate without caching each model returned, using much less memory when iterating over large result sets: # let's assume we've got 1M stat objects to dump to csv stats_qr = Stat.select().execute() # our the proper handling of None/NULL. Note You might have noticed that we created a BaseModel which sets the database, and then all the other models extend the BaseModel. This is a good way to make sure have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. peewee allows every model to specify which database it uses, defaulting to

iterate without caching each model returned, using much less memory when iterating over large result sets: # let’s assume we’ve got 1M stat objects to dump to csv stats_qr = Stat.select().execute() # our the proper handling of None/NULL. Note: You might have noticed that we created a BaseModel which sets the database, and then all the other models extend the BaseModel. This is a good way to make sure have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. peewee allows every model to specify which database it uses, defaulting to

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many a BlobField. Example usage: class Bitmap(Model): data = BigBitField() bitmap = Bitmap() # Sets the ith bit, e.g. the 1st bit, the 11th bit, the 63rd, etc. bits_to_set = (1, 11, 63, 31, 55, 48, gains, consider using dicts(), tuples() or namedtuples() when iterating large and/or complex result-sets. Multiple Foreign Keys to the Same Model When there are multiple foreign keys to the same model

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many >= datetime.date(2012, 9, 1))) Removing duplicates, and ordering results How can you produce an ordered list of the first 10 surnames in the members table? The list must not contain duplicates. SELECT tennis courts, for the date ‘2012-09-21’? Return a list of start time and facility name pairings, ordered by the time. SELECT starttime, name FROM bookings INNER JOIN facilities ON (bookings.facid = facilities

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many stored in a BlobField. Example usage: class Bitmap(Model): data = BigBitField() bitmap = Bitmap() # Sets the ith bit, e.g. the 1st bit, the 11th bit, the 63rd, etc. bits_to_set = (1, 11, 63, 31, 55, 48, gains, consider using dicts(), tuples() or namedtuples() when iterating large and/or complex result-sets. Multiple Foreign Keys to the Same Model When there are multiple foreign keys to the same model

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many >= datetime.date(2012, 9, 1))) Removing duplicates, and ordering results How can you produce an ordered list of the first 10 surnames in the members table? The list must not contain duplicates. SELECT tennis courts, for the date ‘2012-09-21’? Return a list of start time and facility name pairings, ordered by the time. SELECT starttime, name FROM bookings INNER JOIN facilities ON (bookings.facid = facilities

have noticed in the above model code that there is a class defined on the base model named Meta that sets the database attribute. Peewee allows every model to specify which database it uses. There are many >= datetime.date(2012, 9, 1))) Removing duplicates, and ordering results How can you produce an ordered list of the first 10 surnames in the members table? The list must not contain duplicates. SELECT tennis courts, for the date ‘2012-09-21’? Return a list of start time and facility name pairings, ordered by the time. SELECT starttime, name FROM bookings INNER JOIN facilities ON (bookings.facid = facilities