iphone - 在 iphone 中如何获取 Sqlite 最后插入的行 ID？

Question

我正在制作一个我想使用更新查询的应用程序？

在我的申请中，我有两个阶段来完成注册过程

在第 1 页我有注册表单和一个提交按钮？

单击提交按钮后，所有详细信息都应插入到我的 sqlite 表中。

在 page2 我有确认页面和一个编辑并继续按钮？

保存在表中的所有值都应该由用户在此页面上查看，如果他想进行任何更改，他应该能够做到。一旦用户编辑了一些值并按下继续按钮，所有插入的值都应该更新吗？

但是我已经尝试这样做但是我无法更新最后输入的值？

以下是我的代码page1插入代码:

-(void)submit
{

    if( ([UserName.text isEqualToString:@""]) || ([Password.text isEqualToString:@""]) || 
        ([ConfirmPassword.text isEqualToString:@""]) || ([Name.text isEqualToString:@""]) || 
        ([Email.text isEqualToString:@""]) || ([ContactNO.text isEqualToString:@""]) || 
        ([MobileNo.text isEqualToString:@""]) || ([Address.text isEqualToString:@""]) )

    {

        UIAlertView *ErrorAlert = [[UIAlertView alloc] initWithTitle:@"Error!!" 
                                                                 message:@"Please fill in the details." delegate:nil
                                                       cancelButtonTitle:@"OK"
                                                       otherButtonTitles:nil, nil];
            [ErrorAlert show];
            [ErrorAlert release];
        }
        else 
        {
            Confirmation_form *conForm = [[Confirmation_form alloc] initWithNibName:@"Confirmation_form" bundle:nil];
            conForm.data = UserName.text;
            conForm.data1 = Password.text;
            conForm.data2 = ConfirmPassword.text;
            conForm.data3 = Name.text;
            conForm.data4 = Email.text;
            conForm.data5 = ContactNO.text;
            conForm.data6 = MobileNo.text;
            conForm.data7 = Address.text;


            sqlite3_stmt  *statement;
            const char *dbpath = [databasePath UTF8String];
            if (sqlite3_open(dbpath, &test1DB) == SQLITE_OK)
            {



                NSString *insertSQL = [NSString stringWithFormat:@"INSERT INTO test(UserName, Password, ConfirmPassword, Name, Email, ContactNO, MobileNo, Address) VALUES (\"%@\", \"%@\", \"%@\", \"%@\", \"%@\", \"%@\", \"%@\", \"%@\")",UserName.text, Password.text, ConfirmPassword.text, Name.text, Email.text, ContactNO.text, MobileNo.text, Address.text];
                const char *insert_stmt = [insertSQL UTF8String];
                sqlite3_prepare_v2(test1DB, insert_stmt, -1, &statement, NULL);
                if(sqlite3_step(statement) == SQLITE_DONE)
                {
                    //status.text = @"Contact added";
                    UserName.text = @"";
                    Password.text = @"";
                    ConfirmPassword.text = @"";
                    Name.text = @"";
                    Email.text = @"";
                    ContactNO.text = @"";
                    MobileNo.text = @"";
                    Address.text = @"";


                    sqlite3_last_insert_rowid;
                    rowID = sqlite3_last_insert_rowid(test1DB);
                    NSLog(@"last inserted rowId = %d",rowID);

                    sqlite3_reset(statement);
                    sqlite3_finalize(statement);
                    sqlite3_close(test1DB);


                    [self.navigationController pushViewController:conForm animated:YES];

                }                   
            }


        }
    }

从上面的代码中，我能够获取行 ID，但我无法在更新查询中使用该 rowid

以下是我的代码页2更新代码:

-(IBAction)Update;
{

sqlite3_stmt  *statement;
const char *dbpath = [databasePath UTF8String];
if (sqlite3_open(dbpath, &test1DB) == SQLITE_OK)
{
    NSString *insertSQL = [NSString stringWithFormat:@"UPDATE test SET UserName='%@',Password='%@',ConfirmPassword='%@',Name='%@',Email='%@',ContactNO='%@',MobileNO='%@',Address='%@'WHERE ID='%@'",UserName.text,Password.text,ConfirmPassword.text, Name.text, Email.text, ContactNO.text, MobileNo.text, Address.text, sqlite3_last_insert_rowid(test1DB)];

    const char *insert_stmt = [insertSQL UTF8String];
    sqlite3_prepare_v2(test1DB, insert_stmt, -1, &statement, NULL);
    if(sqlite3_step(statement) == SQLITE_DONE)
    {
        sqlite3_step(statement);
                                UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"UIAlertView" message:@"Record added" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
                                    [alert show];
                                    [alert release];
                                    alert = nil;    
        sqlite3_finalize(statement);
        sqlite3_close(test1DB);
    }

    else {
        sqlite3_step(statement);
                        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"UIAlertView" message:@"Record notadded" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
                        [alert show];
                        [alert release];
                        alert = nil;    
         }
}

Answer 1

NSInteger lastRowId = sqlite3_last_insert_rowid(yourdatabasename);