Foreign key ON DELETE CASCADE is not working in Android 2.2
I have 2 tables:
db.execSQL("Create Table Location(LocationID INTEGER PRIMARY KEY AUTOINCREMENT,
Latitude TEXT, Longitude TEXT," +
" CellID TEXT, MCC TEXT, MNC TEXT, LAC TEXT, SendTime TEXT DEFAULT
(datetime('now','localtime')), SignalStrength INTEGER, LocationType TEXT)");
db.execSQL("Create Tab开发者_JAVA技巧le Error_Exception(LocationID INTEGER, ExceptionID INTEGER
PRIMARY KEY AUTOINCREMENT, ModuleID TEXT, ClassName TEXT, ControlName TEXT, " +
"MethodName TEXT, ErrorDescription TEXT, ErrorDate TEXT DEFAULT
(datetime('now','localtime')),
FOREIGN KEY(LocationID) REFERENCES Location(LocationID)
ON DELETE CASCADE);");
When I tried to delete the rows in Error_Exception
it is not deleting the rows in Location
table.
I have tried with db.execSQL("PRAGMA foreign_keys=ON;");
also but still not working.
Please help
You've told your database to delete rows in Error_Exception when the referenced rows in Location are deleted. You seem to have things backward.
If you want to delete rows in Location when rows in Error_Exception are deleted, you need to drop the foreign key constraint in Error_Exception, and add a foreign key constraint in Location.
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