如何从另一个表中将2个字段匹配到另一个表中相同1个字段的数据

Question

I have 3 table

Player Playerid Player name

Team Team id Player1 foreign key playerid from table(player) Player2 foreiy key playerid

Match Matchid Teamid Playerid

Now I want a player name from the player table for player1 and player2 in Dropdown box

I am doing it for a college project using php codeigniter and stuck at this Please help me on this anyone.

Answer 1

您的案例看起来像一个简单的JOIN查询

SELECT T.team_id, P1.player_name, P2.player_name from team T JOIN player P1 ON T.player1 = P1.player_id JOIN player P2 ON T.player2 = P2.player_id