function PrepareToInstall(var NeedsRestart: Boolean): String;
var
ResultCode: Integer;
begin
ExtractTemporaryFile('Install.exe');
if FileCopy(ExpandConstant('{tmp}\Install.exe'), ExpandConstant('{app}\Install.exe'), False) then
begin
if not Exec(ExpandConstant('{app}\Install.exe'), '', '', SW_SHOW, ewWaitUntilTerminated, ResultCode) then
Result := 'Installation failed. ' + SysErrorMessage(ResultCode);
end;
end;
引发了以下异常：
android.database.sqlite.SQLiteException：没有这样的列：tblAlarmSetup.ASID（代码1）:,同时编译： SELECT tblAlarmSetup.ASID AS A，tblContact.CID AS B，tblContact.Contact AS C，tblSubject .SubID AS D，tblSubject.Subject AS E，tblAlarmSetup.IsActive AS F FROM tblSubject INNER JOIN（tblContact INNER JOIN tblAlarmSetup on tblContact.CID = tblAlarmSetup.CID）ON tblSubject.SubID = tblAlarmSetup.SubID WHERE tblContact.CID = 1 AND tblSubject .SubID = 1
但是，当我在旧的三星S2手机上调试应用程序时，我只会遇到此异常。在我的新Xperia Z3上一切正常。
这个SQL语句有什么不对它在旧设备上不起作用？
我有以下3个表格：
LogCat： CID ，请与tblContact：子ID ，主题两者都与：
相关联tblSubject： ASID ，CID，SubId，IsActive 编辑：samsung s2运行android 4.1.2; xperia z3运行android 6.0.1
编辑2：这里有一些相关的代码
tblAlarmSetup创建数据库：
public class DbHandler extends SQLiteOpenHelper {
private static final String DATABASE_NAME = "ReminderDB.db";
private static final int DATABASE_VERSION = 1;
private static final String TABLE_CONTACT = "tblContact";
private static final String TABLE_CONTACT_CID_ATTR = "CID";
private static final String TABLE_CONTACT_CID = TABLE_CONTACT + "." + TABLE_CONTACT_CID_ATTR;
private static final String TABLE_CONTACT_CONTACT_ATTR = "Contact";
private static final String TABLE_CONTACT_CONTACT = TABLE_CONTACT + "." + TABLE_CONTACT_CONTACT_ATTR;
private static final String TABLE_SUBJECT = "tblSubject";
private static final String TABLE_SUBJECT_SUBID_ATTR = "SubID";
private static final String TABLE_SUBJECT_SUBID = TABLE_SUBJECT + "." + TABLE_SUBJECT_SUBID_ATTR;
private static final String TABLE_SUBJECT_SUBJECT_ATTR = "Subject";
private static final String TABLE_SUBJECT_SUBJECT = TABLE_SUBJECT + "." + TABLE_SUBJECT_SUBJECT_ATTR;
private static final String TABLE_ALARMSETUP = "tblAlarmSetup";
private static final String TABLE_ALARMSETUP_ASID_ATTR = "ASID";
private static final String TABLE_ALARMSETUP_ASID = TABLE_ALARMSETUP + "." + TABLE_ALARMSETUP_ASID_ATTR;
private static final String TABLE_ALARMSETUP_CID_ATTR = "CID";
private static final String TABLE_ALARMSETUP_CID = TABLE_ALARMSETUP + "." + TABLE_ALARMSETUP_CID_ATTR;
private static final String TABLE_ALARMSETUP_SUBID_ATTR = "SubID";
private static final String TABLE_ALARMSETUP_SUBID = TABLE_ALARMSETUP + "." + TABLE_ALARMSETUP_SUBID_ATTR;
private static final String TABLE_ALARMSETUP_ISACTIVE_ATTR = "IsActive";
private static final String TABLE_ALARMSETUP_ISACTIVE = TABLE_ALARMSETUP + "." + TABLE_ALARMSETUP_ISACTIVE_ATTR;`
查询：
@Override
public void onCreate(SQLiteDatabase db) {
final String CREATE_CONTACT_TABLE =
"CREATE TABLE IF NOT EXISTS " + TABLE_CONTACT + " ("
+ TABLE_CONTACT_CID_ATTR + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ TABLE_CONTACT_CONTACT_ATTR + " STRING NOT NULL UNIQUE)";
//CID (PK, FK) | Contact (unique)
final String CREATE_SUBJECT_TABLE =
"CREATE TABLE IF NOT EXISTS " + TABLE_SUBJECT + " ("
+ TABLE_SUBJECT_SUBID_ATTR + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ TABLE_SUBJECT_SUBJECT_ATTR + " STRING NOT NULL UNIQUE)";
//SubID (PK, FK) | Subject (unique)
final String CREATE_ALARMSETUP_TABLE =
"CREATE TABLE IF NOT EXISTS " + TABLE_ALARMSETUP + " ("
+ TABLE_ALARMSETUP_ASID_ATTR + " INTEGER PRIMARY KEY AUTOINCREMENT, "
+ TABLE_ALARMSETUP_CID_ATTR + " INTEGER NOT NULL, "
+ TABLE_ALARMSETUP_SUBID_ATTR + " INTEGER NOT NULL, "
+ TABLE_ALARMSETUP_ISACTIVE_ATTR + " INTEGER NOT NULL DEFAULT 0, "
+ "UNIQUE (" + TABLE_ALARMSETUP_CID_ATTR + ", " + TABLE_ALARMSETUP_SUBID_ATTR + "), "
+ "FOREIGN KEY (" + TABLE_ALARMSETUP_CID_ATTR + ") REFERENCES " + TABLE_CONTACT + " (" + TABLE_CONTACT_CID_ATTR + "), "
+ "FOREIGN KEY (" + TABLE_ALARMSETUP_SUBID_ATTR + ") REFERENCES " + TABLE_SUBJECT + " (" + TABLE_SUBJECT_SUBID_ATTR + "))";
//ASID (PK) | CID (Unique in combination with SubID) | SubID
db.execSQL(CREATE_CONTACT_TABLE);
db.execSQL(CREATE_SUBJECT_TABLE);
db.execSQL(CREATE_ALARMSETUP_TABLE);
}
编辑3：请不要关闭此帖子。你给我的建议没有回答我的问题。触发了 String query = "SELECT "
+ TABLE_ALARMSETUP_ASID + " AS A, "
+ TABLE_CONTACT_CID + " AS B, "
+ TABLE_CONTACT_CONTACT + " AS C, "
+ TABLE_SUBJECT_SUBID + " AS D, "
+ TABLE_SUBJECT_SUBJECT + " AS E, "
+ TABLE_ALARMSETUP_ISACTIVE + " AS F"
+ " FROM " + TABLE_SUBJECT
+ " INNER JOIN (" + TABLE_CONTACT
+ " INNER JOIN " + TABLE_ALARMSETUP
+ " ON " + TABLE_CONTACT_CID + " = " + TABLE_ALARMSETUP_CID + ")"
+ " ON " + TABLE_SUBJECT_SUBID + " = " + TABLE_ALARMSETUP_SUBID
+ " WHERE " + TABLE_CONTACT_CID + " = " + cid
+ " AND " + TABLE_SUBJECT_SUBID + " = " + subid;
Cursor cursor = db.rawQuery(query, null);
并且表存在。我可以对OnCreate这样的单个表进行选择查询，但如果我在我的查询中包含联接，它就无法在我的三星设备上运行。