SQLite IntegrityError: UNIQUE constraint failed:

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

您的 table 声明的 UNIQUE 子句声明每一行的 player_id、map_id 和 runID 的组合必须是唯一的。您收到此错误是因为 jumptimes table 中已经有一行 player_id = 13、map_id = 34 和 runID = 0.

Here is a simple SQLFiddle 重现错误。 "constraint" 错误所指的是 UNIQUE 子句，如果您能看到完整的错误，它就会与您得到的错误相同。

SQLite IntegrityError: UNIQUE constraint failed:

SQLite IntegrityError: UNIQUE constraint failed:

sql

sqlite

python-2.5