通过启用pragma foreignkeys ON,我以编程方式在ios中创建了一个.sqlite文件

NSFileManager *theFileManager = [NSFileManager defaultManager];

if ([theFileManager fileExistsAtPath:[self getDatabasePath]] == NO)

{

char *theError;

const char *databasePath = [[self getDatabasePath] UTF8String];

const char *enableForienKey = [@"PRAGMA foreign_keys = ON;" UTF8String];

if (sqlite3_open(databasePath, &mDatabase) == SQLITE_OK)

{

if (sqlite3_exec(mDatabase, enableForienKey, NULL, NULL, &theError)!=SQLITE_OK)

{

DEBUGLOG(kCreateTableError,sqlite3_errmsg(mDatabase));

}

sqlite3_close(mDatabase);

}

else {

DEBUGLOG(KFailedToCreateDBFile);

}

}

Pragma外键正在启用但是,我创建了两个表,如下所示,创建查询包括ON DELETE CASCADE //第一个表创建查询

@"CREATE TABLE IF NOT EXISTS Session (sessionAppID INTEGER PRIMARY KEY NOT NULL , sessionID VARCHAR(255) NOT NULL, userAppID INTEGER, deviceAppID INTEGER NOT NULL, sessionStartTime VARCHAR(255) NOT NULL, sessionEndTime VARCHAR(255), sessionCreatedDateTime VARCHAR(200) NOT NULL,sessionUpdatedDateTime VARCHAR(200) NOT NULL, sessionFailureCount INTEGER NOT NULL,sessionStatus INTEGER NOT NULL, FOREIGN KEY(userAppID) REFERENCES User(userAppID), FOREIGN KEY(deviceAppID) REFERENCES Device(deviceAppID))"

//第一个表查询的子表的第二个表

@"CREATE TABLE IF NOT EXISTS EventLog (eventLogAppID INTEGER PRIMARY KEY NOT NULL , eventGUID VARCHAR(255) NOT NULL, sessionAppID INTEGER NOT NULL , eventName VARCHAR(255) NOT NULL, eventGroupGUID VARCHAR(255), eventParentGUID VARCHAR(255), eventCategory INTEGER NOT NULL,eventStartTime VARCHAR(255) NOT NULL, eventEndTime VARCHAR(255) ,eventDuration VARCHAR(255),eventType INTEGER NOT NULL,eventCreatedDateTime VARCHAR(200) NOT NULL,eventUpdatedDateTime VARCHAR(200) NOT NULL,eventFailureCount INTEGER NOT NULL,eventStatus INTEGER NOT NULL, FOREIGN KEY(sessionAppID) REFERENCES Session(sessionAppID)ON DELETE CASCADE)"

在删除会话记录时,只有会话记录正在删除eventLog记录没有删除,可以请任何人帮忙,这将是什么问题.通过我使用sqlite3版本3.7.1的方式