无法从 SQLite iPhone 中删除记录

Question

当我在 iPhone 模拟器中运行此代码时，我无法从数据库中删除记录。如果我在 SQLite DB 浏览器中运行此查询，它效果很好。这是我的代码

SQLiteDB *sqliteConnect=[[SQLiteDB alloc] init];
sqlite3 *database;

if(sqlite3_open([sqliteConnect.databasePath UTF8String], &database)==SQLITE_OK)
{   
    sqlite3_stmt *compiledstatement;

    const char *sqlstmt="delete from searchHistory where id = (select min(id) from searchHistory) ";

    if(sqlite3_prepare_v2(database, sqlstmt, -1, &compiledstatement, NULL)==SQLITE_OK)
    {
        sqlite3_step(compiledstatement);

        if(SQLITE_DONE != sqlite3_step(compiledstatement))

            NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database) );
    }
    NSLog(@"delete DONE");
    sqlite3_finalize(compiledstatement);
}
sqlite3_close(database);

当我使用调试器运行时，我收到以下错误=>

2011-04-08 08:42:34.049 MyApp[1838:20b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Error while creating delete statement => not an error'

SQLiteDB 是我的类，其中包含 init 和 SQLiteDB 的逻辑。 checkAndCopyDB 方法。我的数据库被复制到文档目录中。其他数据库操作工作正常。请帮我。谢谢

Answer 1

你调用 sqlite3_step 两次？

试试这个：

{
    int result = sqlite3_step(compiledstatement);

    if(SQLITE_DONE != result)

        NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database) );
 }

Answer 2

也许尝试：

if(SQLITE_DONE != sqlite3_step(compiledstatement))
    NSAssert1(0,@"Error while creating delete statement => %s",sqlite3_errmsg(database));