SQLite IntegrityError:UNIQUE约束失败:

Question

我只是得到一个奇怪的错误:

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

我的SQL QUERY:

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)
)

正如话题所说,我总是得到 SQLite IntegrityError: UNIQUE constraint failed:

Answer 1

在UNIQUE你的表声明的条款规定,每一行的组合player_id,map_id和runID必须是唯一的.您收到此错误,因为已经有在一排jumptimes桌子player_id = 13,map_id = 34和runID = 0.

这是一个简单的SQLFiddle重现错误.错误所讨论的"约束"是UNIQUE子句,如果你能看到完整的错误,它将与你得到的那个相同.