将 2 个内部连接查询合二为一

Question

I am stuck trying to combine output from 3 tables into one single query.

Here are the table structure

BL_PLAYERS

player_id int(10)
league_id int(10)
player_name varchar(150)
gender tinyint(3)
initial_hc smallint(6)
total_score int(10)
total_games smallint(6)
current_hc smallint(6)
league_player tinyint(3)

BL_POINTS

series_id int(10) player_id int(10) point smallint(6)

BL_LEAGUES_RANK

series_id int(10) player_id int(10) rank smallint(6)
last_game smallint(6) true_score smallint(6) handicap smallint(6)
total_score smallint(6)

Here are my 2 inner join statements.. they look almost identical... but I cant find a way to combine it so that the first sql will return additional column which is the sum(rn.total_score) from BL_LEAGUES_RANK

SELECT pl.player_id, pl.player_name, pl.gender, pl.league_player, SUM( pt.point ) AS total_points FROM `bl_players` pl  INNER JOIN `bl_points` pt ON pl.player_id = pt.player_id AND series_id =1 GROUP BY player_id ORDER BY total_points DESC 

SELECT pl.player_id, pl.player_name, pl.gender, pl.league_player, SUM(rn.total_score) as total_pinfall FROM `bl_players` pl INNER JOIN `bl_leagues_rank` rn ON pl.player_id = rn.player_id AND series_id =1 GROUP BY player_id ORDER BY total_pinfall DESC

Is it even possible? Thank you in advance for any input on this...

Answer 1

I think this ought to work....

SELECT pl.player_id, pl.player_name, pl.gender, 
    pl.league_player, SUM( pt.point ) AS total_points 
FROM bl_players pl, bl_points pt, bl_leagues_rank rn
WHERE pl.player_id = pt.player_id AND series_id =1 
    AND pl.player_id = rn.player_id
GROUP BY player_id ORDER BY total_points DESC