Android 中尝试从数据库中删除对象列表时出现语法异常

Question

错误

android.database.sqlite.SQLiteException: near ",": syntax error (code 1): , while compiling: DELETE FROM messages_table WHERE (time,recepient_id,sender_id) IN (("1469945224502","8c79c7d4bf2c11e38867e83935244df8","0a0897ceed5a11e38867e83935244df8"),("1466672473543","8c79c7d4bf2c11e38867e83935244df8","0a0897ceed5a11e38867e83935244df8"))
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:887)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:498)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.delete(SQLiteDatabase.java:1496)
at $JUST_MY_CLAS_NAME.run(BasicDAO.java:136)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)

可能是什么原因造成的？

它在服务器数据库上执行时没有错误，但在 Android.

上执行失败

问题：我需要从数据库中删除大量数据。 我正在获取 POJO 列表形式的数据。所以我需要动态创建查询。这只是演示问题的简单案例。

这可能不是最佳方式，我们将不胜感激任何建议，尤其是文档。

Answer 1

In SQLite,

the IN and NOT IN operators take a single scalar operand on the left and a vector operand on the right.

所以你必须写出比较：

DELETE FROM messages_table
WHERE (time         = '1469945224502'                    AND
       recepient_id = '8c79c7d4bf2c11e38867e83935244df8' AND
       sender_id    = '0a0897ceed5a11e38867e83935244df8')
      OR
      (time         = '1466672473543'                    AND
       recepient_id = '8c79c7d4bf2c11e38867e83935244df8' AND
       sender_id    = '0a0897ceed5a11e38867e83935244df8');

Android 中尝试从数据库中删除对象列表时出现语法异常

Syntax exception while trying to delete a list of objects from the database in Android

sqlite

android

android-sqlite