SQLite IntegrityError：唯一约束失败：

Question

我刚收到一个奇怪的错误：

IntegrityError: UNIQUE constraint failed: jumptimes.player_id, jumptimes.map_id, jumptimes.runID

我的SQL查询：

t = (playerid, mapid, timeTaken, (time() if not dateOverwrite else dateOverwrite), runID, runLeaveZoneVelocity, EnterZoneVelocity, averageVelocity, time())
log("PlayerID: %s | mapid: %s | timeTaken: %s | Date: %s | runID: %s | rlvz: %s | ezv: %s | avgvel: %s | firstFinish: %s" % t)
execute("INSERT INTO jumptimes (player_id, map_id, duration, date, runID, LeaveZoneVelocity, enterZoneVelocity, averageVelocity, firstFinish) VALUES (?,?,?,?,?,?,?,?,?)", t)

日志输出：

17:45:11 - PlayerID: 13 | mapid: 34 | timeTaken: 55.2569999695 | Date: 1426265111.18 | runID: 0 | rlvz: 315.484661963 | ezv: 1159.06484472 | avgvel: 1374.49441131 | firstFinish: 1426265111.18

我的数据库结构：

CREATE TABLE IF NOT EXISTS jumptimes (
     id INTEGER PRIMARY KEY AUTO_INCREMENT,
     player_id INTEGER REFERENCES players ON DELETE CASCADE,
     map_id INTEGER REFERENCES maps ON DELETE CASCADE,
     duration REAL,
     `date` REAL,
     runID INTEGER,
     leaveZoneVelocity INTEGER DEFAULT 0,
     enterZoneVelocity INTEGER DEFAULT 0,
     averageVelocity INTEGER DEFAULT 0,
     server INTEGER DEFAULT 0,
     firstFinish REAL,
     completions INTEGER DEFAULT 1,
     UNIQUE (player_id, map_id, runID)
)

正如主题所说，我总是得到SQLite IntegrityError: UNIQUE constraint failed:

Answer 1

表的声明中的UNIQUE子句指出，player_id，map_id和runID的每一行的组合都必须是唯一的。您正在收到此错误，因为jumptimes表中已经存在带有player_id = 13，map_id = 34和runID = 0的行。

Answer 2

即使我的整个表为空，我在SQLite3中也遇到相同的错误。