insertwithonconflict
有时候会有这样的需求：更新数据库中的某一列，如果该表中有某个字段，就更新该列，如果没有则添加到表中。1. 先要在建表的时候把不能重复的字段设置为唯一（unique）： 这里吧date字段设为唯一2. 使用SQLiteDatabase的insertWithOnConflict方法进行冲突时替换注意：这种方法是删除原有再添加，所以主键会不 ..., Yup, (change BaseColumns._ID to something suitable if you do not follow the standard name for the row identifier used by Android) and this should do what you want: db.insertWithOnConflict(tableName, BaseColumns._ID, v, SQLiteDatabase.CONFLICT_REPLACE);.
| 相關軟體 SQLite 資訊 | |
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 insertwithonconflict 相關參考資料
SQLiteDatabase | Android Developers
insertWithOnConflict. added in API level 8. long insertWithOnConflict (String table, String nullColumnHack, ContentValues initialValues, int conflictAlgorithm). General method for inserting a row into... https://developer.android.com Android Sqlite字段重复则更新，不重复则添加- 简书
有时候会有这样的需求：更新数据库中的某一列，如果该表中有某个字段，就更新该列，如果没有则添加到表中。1. 先要在建表的时候把不能重复的字段设置为唯一（unique）： 这里吧date字段设为唯一2. 使用SQLiteDatabase的insertWithOnConflict方法进行冲突时替换注意：这种方法是删除原有再添加，所以主键会不 ... https://www.jianshu.com android - insertWithOnConflict() vs. Insert or replace - Stack ...
Yup, (change BaseColumns._ID to something suitable if you do not follow the standard name for the row identifier used by Android) and this should do what you want: db.insertWithOnConflict(tableName, ... https://stackoverflow.com android - Using insertWithOnConflict for update or insert - Stack ...
Make sure you have some appropriate constraint in your table, such as PRIMARY KEY or UNIQUE . When inserting, add a value to this constrained column via ContentValues . If inserting the new row would... https://stackoverflow.com Android: SQLite - insertWithOnConflict - Stack Overflow
insertWithOnConflict, using SQLiteDatabase.CONFLICT_IGNORE does not work as expected and should probably be avoided altogether, as per this issue: https://code.google.com/p/android/issues/detail?id=1... https://stackoverflow.com android - Why does insertWithOnConflict(..., CONFLICT_IGNORE ...
While your expectations for the behavior of insertWithOnConflict seems entirely reasonable (you should get the pk for the colliding row), that's just not how it works. What actually happens is th... https://stackoverflow.com android - SQLiteDatabase.insertWithOnConflict throws exception. It ...
the problem was that the row I was inserting was violating a foreign key constraint (the referenced row did not exist). For some reason I overlooked that. So, it is not insertOnConflict's fault. https://stackoverflow.com android之SQLite数据库应用（二） - CSDN博客
Android SQLiteDatabase类中insert方法所调用的insertWithOnConflict方法的实现 · public long insertWithOnConflict(String table, String nullColumnHack, ContentValues init... wjk7186912. 2016-02-17 19:46:07. 阅读数：... https://blog.csdn.net SQLite 大数据量新增 修改提升效率的办法- 分享是一种美德 - OSChina
getUserId()); cv.put("name", baseUserInfo.getName()); cv.put("logo", baseUserInfo.getLogo()); // 生成的sql是INSERT INTRO OR REPLACE INTO 这样的(如果存在就替换存在的字段值. 存在的判断标准是主键冲突, 这里的主键是userId).... https://my.oschina.net SQLiteDatabase.insertWithOnConflict Android code examples | Codota
Code examples using SQLiteDatabase.insertWithOnConflict. Codota understands the worlds code and provides you with the right suggestion at the right time. https://www.codota.com |