android-sqlite

问题 I have created MovieDatabase using Room Persisdent lib. According to the documentation of onCreate() method in RoomDatabase.Callback, onCreate() to be called after the database is created for the first time, and all the tables were created. What happend after I called buildPersistentDB() is, I received logs from MoviesDatabase class, the class that is annotated with @Database, but the logs from onCreate() in RoomDatabase.Callback were never called despite I called: this.mMovieDatabase = this

来源： https://stackoverflow.com/questions/14685682/how-to-replace-existing-sqlite-database-file-with-new-database-file-in-android

来源： https://stackoverflow.com/questions/63830625/android-how-to-join-the-child-table-with-parent-table-sqlite

来源： https://stackoverflow.com/questions/48134403/how-to-correctly-use-strftime-and-datetime-using-room-library

来源： https://stackoverflow.com/questions/48134403/how-to-correctly-use-strftime-and-datetime-using-room-library

问题 We have created the xyz.sqlite file(in which we have table called BOOK) and saved it into "raw" folder and then copying the file and creating the database at run time, which is working fine in all the versions of android up to Android 8. However when I'm running it on Android 9(Pie) on emulator, it's giving me below mentioned error... Searched for the solution but nothing worked... Any help would be appreciated... Thanks. 09-13 00:55:49.536 5685-5685/? E/AndroidRuntime: FATAL EXCEPTION: main

问题 We have created the xyz.sqlite file(in which we have table called BOOK) and saved it into "raw" folder and then copying the file and creating the database at run time, which is working fine in all the versions of android up to Android 8. However when I'm running it on Android 9(Pie) on emulator, it's giving me below mentioned error... Searched for the solution but nothing worked... Any help would be appreciated... Thanks. 09-13 00:55:49.536 5685-5685/? E/AndroidRuntime: FATAL EXCEPTION: main

问题 I've been getting an inconsistent, non-reproducible crash upon users upgrading to a new version of the local SQLite DB when updating the app. Fatal Exception: android.database.sqlite.SQLiteException: duplicate column name: upload_pending (code 1): , while compiling: ALTER TABLE purchases ADD COLUMN upload_pending TINYINT DEFAULT 0 ################################################################# Error Code : 1 (SQLITE_ERROR) Caused By : SQL(query) error or missing database. (duplicate column

问题 I've been getting an inconsistent, non-reproducible crash upon users upgrading to a new version of the local SQLite DB when updating the app. Fatal Exception: android.database.sqlite.SQLiteException: duplicate column name: upload_pending (code 1): , while compiling: ALTER TABLE purchases ADD COLUMN upload_pending TINYINT DEFAULT 0 ################################################################# Error Code : 1 (SQLITE_ERROR) Caused By : SQL(query) error or missing database. (duplicate column

问题 In my android app I have some Database transaction using SQLite but I am getting SQLiteConnection object leakage despite trying many ways to prevent the leak. I have almost tried each and every thing in the internet like closing the db, closing the cursor, or ending the transaction. Below is the warning in android studio. A SQLiteConnection object for database '/data/user/0/com.example.myapp/databases/myapp.dbnotes.db' was leaked! Please fix your application to end transactions in progress