How to use mySQL to generate auto-increment ID for me

Question

This may be a bad structure. Let me know if it is, it's been a long time since I did any database design.

I have a tblGame in a mySQL database, which has two fields:

ID_Table
ID_Player

In the actual game, multiple players will sit on the one table. So I have both fields set as a combined primary key. And ID_Table is set to auto-increment. ID_Player is an auto-increment in another table (tblPlayers). What I'd like to do is to get the ID_Table value before any players are added to the table. The actual game analogy is to an open table (with ID_Table already assigned) sitting there waiting for players to join. As they join, they get added to tblGame.

Is it possible to do this?

Answer 1

You could implement the following solution.

Game "Table"

This table stores the auto-generated values of the (playing) Tables for the game:

CREATE TABLE tblTable (
    ID int NOT NULL AUTO_INCREMENT);

Game "Players"

This table contains all the relevant Player data:

CREATE TABLE tblPlayer (
    ID         int          NOT NULL AUTO_INCREMENT,
    LastName   varchar(244) NOT NULL,
    FirstName  varchar(244) NOT NULL,
    Age        int          NOT NULL,
    PRIMARY KEY (ID)
);

Game "Games" (Matches)

This table links the tblPlayer table with the tblTable data.

CREATE TABLE tblGame (
    ID_Table   int,
    ID_Player  int
);

Creating a new table

When you create a new table in your game you just initialize a new ID by setting off the following statement:

INSERT INTO tblTable (ID) VALUE DEFAULT;

This will create a new value (ID). You would have to store this value in your program code to use when assigning players to the table.

Answer 2

If you are using Mysql Database this query can help you

CREATE TABLE Your_table_name (
    ID int NOT NULL AUTO_INCREMENT,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int,
    PRIMARY KEY (ID)
);

MySQL uses the AUTO_INCREMENT keyword to perform an auto-increment feature.

By default, the starting value for AUTO_INCREMENT is 1, and it will increment by 1 for each new record.

To let the AUTO_INCREMENT sequence start with another value, use the following SQL statement:

ALTER TABLE Persons AUTO_INCREMENT=100;