![]() ![]() Rather than unique index for the unit tests to still work the column names don’t include the ‘_id’ part of what might actually be in the database. Primary_key = CompositeKey('column1', 'column2') SQLite has an implicit auto increment feature that takes place for any non-composite primary-key column that is specifically created using INTEGER PRIMARY KEY for the type + primary key. ![]() It doesn’t break my run of unit tests which is also a bonus.įinally, a compound primary is better specified in the model as, class Meta: It also seems that foreign keys are not honored by default and that they have to be explicity requested with, database = SqliteDatabase(app.config, pragmas=((‘foreign_keys’, ‘on’),)) This comes, however, from a Playhouse extension which I want to avoid. (though like most ORMs it doesn’t think you need the id column I prefer to see it). Rather than id = IntegerField(primary_key=True) ![]() In other words, the purpose of AUTOINCREMENT is to prevent the reuse of ROWIDs from previously deleted rows. Is there an auto increment in SQLite using Python Last Post RSS myTechMint (mytechmint) Member Moderator Joined: 3 years ago Posts: 52 Topic starter 8:13 pm I am trying to create a table with an auto-incrementing primary key in Sqlite3. I had cursed PeeWee for not appearing to support incrementing primary keys when inserting new records and having to include a line to calculate the next insert id via a query (not a safe operation, I know), but it turns out that there is an alternate way to specify a primary key in the PeeWee model: id = PrimryKeyField() From SQLite Autoincrement: If the AUTOINCREMENT keyword appears after INTEGER PRIMARY KEY, that changes the automatic ROWID assignment algorithm to prevent the reuse of ROWIDs over the lifetime of the database. the first one (Python, SQLite, foreign keys, auto increment, development). Just a wee nugget I picked up from the PeeWee documentation that needs to be saved for later reference ‘cos I’m bound to forget this with later projects and I’m including unnecessary code in my applications. How can you use the auto increment key of one table into another table to not. ![]()
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