fis*_*ssk 5 sqlite android between
看起来非常简单的任务,尝试使用以下内容在Android应用程序中的SQLite数据库中获取给定范围的记录/行:
String[] projection = {"_id"};
String selection = "_id between ? and ?";
String[] selectionArgs = {"1", "10"};
queryBuilder.query(db, projection, selection, selectionArgs, null, null, null);
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使用上面的selectionArgs,我只得到两行,第1行和第10行.如果我将arg更改为其他任何内容,我将获得整个(整个记录/行集),就像没有条件一样.一直在敲打我的头脑,为什么它的工作方式如此,或许在SQLite中使用"之间"有一些特殊的事情要知道?任何评论/帮助非常感谢.
我检查了一下你这边的问题,效果很好,
方法
public Cursor GetBetween(String[] projection,String selection, String[] args){
return db.query(TBL_NAME, projection, selection, args, null, null, null);
}
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执行
String[] projection = new String[]{"_id"};
String[] selectionArgs = new String[]{"1","3"};
String selection = "_id between ? and ?";
Cursor cursorGetBetween = helper.GetBetween(projection,selection, selectionArgs);
startManagingCursor(cursorGetBetween);
cursorGetBetween.moveToFirst();
while(!cursorGetBetween.isAfterLast()){
Log.d("value of cursorGetBetween", cursorGetBetween.getString(0));
cursorGetBetween.moveToNext();
}
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输出
01-31 18:42:58.176: D/value of cursorGetBetween(647): 1
01-31 18:42:58.176: D/value of cursorGetBetween(647): 2
01-31 18:42:58.176: D/value of cursorGetBetween(647): 3
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