List * FROM folders WHERE id IN (:folderIds)")īut when I make a folder object and try to insert it: AsyncTask. I'd suggest that you ALWAYS only use a single source for all database components (database tables columns). Which have a foreign key on ID column of it self for parent.Īnd here is FolderDAO: interface FolderDAO = OnConflictStrategy.REPLACE) score:1 Accepted answer Your issue is possibly due to a typing error, perhaps that classessections does not equate to whatever TABLECLASSESSECTIONS resolves to. here setters and getters skipped but exist in original codeĪnd Here is Folder Code: = "folders", foreignKeys = Folder.class, As a thought experiment here is a proposal: ALTER TABLE tablename DROP FOREIGN KEY column1. At the very least it would be nice if there was something to say, standard SQLite features we do not support: foreign keys or some such.
In my design, a folder can contain another folders and files.įile Model: = "files", foreignKeys = Folder.class, Since sqlite doesnt create a name for a foreign key constraint if none is given, there either needs to be a convention for referencing an unnamed constraint or a new syntax.
From the menu bar at the top of the window, select Edit and then Modify Table.
#SQLITE STUDIO FOREIGN KEY CANNOT EDIT THIS CELL ANDROID#
I'm trying to design and implement a folder tree structure in Android SQLite with help of Android Room Persistence (an ORM) which Google introduced in I/O 2017. Select the relevant table from the database by clicking on it. Assuming your SQLite library hasn’t been compiled with SQLITEOMITFOREIGNKEY or SQLITEOMITTRIGGER defined, you will still need to enable foreign key support at runtime.
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