Android SQLite：唯一的插入问题

我在使用指定的复合主键将行插入表时遇到问题

复合键打开：

_id = id of the series (this starts always with 0 for every new shooting)
shooting_id = id of my training session
program_id = id of discipline I am currently training

每当我尝试插入具有相同“\u id”列值的第二行时，就会出现以下错误：

INSERT INTO series(_id,shooting_id,rings,program_id) VALUES (?,?,?,?)]:       UNIQUE constraint failed: series._id, series._id, series._id 05-19 08:36:05.070    2417-2417/? E/SQLiteDatabase﹕ Error inserting _id=0 shooting_id=1 rings=100 program_id=0 android.database.sqlite.SQLiteConstraintException: UNIQUE constraint failed: series._id, series.program_id, series._id (code 2067)

例如：

// first training session
INSERT INTO series(_id,shooting_id,rings,program_id) VALUES (0,0,100,0)
INSERT INTO series(_id,shooting_id,rings,program_id) VALUES (1,0,98,0)
INSERT INTO series(_id,shooting_id,rings,program_id) VALUES (2,0,98,0)
// second training session --> only shooting_id has changed (!!)
INSERT INTO series(_id,shooting_id,rings,program_id) VALUES (0,1,100,0) <-- results in above error

---

为什么？？：-（

您的

UNIQUE

约束是错误的。列名变量具有来自其他表的

\u id

，而不是

系列
表中的列，并且约束变为
（\u id，\u id，\u id）
，而不是
（\u id，shooting\u id，program\u id）
。
@Downvoter，并删除注释：“因为只有这三列的组合是唯一的。”
private static final String CREATE_TABLE_SERIES = "CREATE TABLE IF NOT EXISTS " 
+ TABLE_SERIES + " ("
+ COLUMN_SERIES_SHOOTING_ID + " integer NOT NULL, "
+ COLUMN_SERIES_PROGRAM_ID + " integer NOT NULL, "
+ COLUMN_SERIES_ID + " integer NOT NULL, "
+ COLUMN_SERIES_RINGS + " integer NOT NULL, "
+ "FOREIGN KEY(" + COLUMN_SERIES_SHOOTING_ID + ") REFERENCES " + TABLE_SHOOTING + "(_id), "
+ "UNIQUE (" + COLUMN_SHOOTING_ID + "," + COLUMN_SERIES_PROGRAM_ID + "," + COLUMN_SERIES_ID + "));";`