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-- Does expression * NULL return NULL?
-- How about with other arithmetic operators?
-- If so, we can simplify the aggregation to eliminate CASE and/or nested CASE statements
SELECT
move_log.move,
count(move_log.move) AS move_count,
count(CASE
WHEN game_log.victor_name = :plr_name AND game_log.victor_color_int = :plr_color_int
THEN move_log.move ELSE NULL END) AS win_count,
count(CASE
WHEN game_log.vic_chk = 0
THEN move_log.move ELSE NULL END) AS draw_count,
count(CASE
WHEN game_log.vic_chk = 1 AND (game_log.victor_name <> :plr_name OR game_log.victor_color_int <> :plr_color_int)
THEN move_log.move ELSE NULL END) AS loss_count,
sum(CASE
WHEN game_log.victor_name = :plr_name AND game_log.victor_color_int = :plr_color_int
THEN (1.0 / 1.0)
ELSE NULL END) AS sum_win_factor,
sum(CASE
WHEN game_log.vic_chk = 0
THEN (0.0 / 1.0)
ELSE NULL END) AS sum_draw_factor,
sum(CASE
WHEN game_log.vic_chk = 1 AND (game_log.victor_name <> :plr_name OR game_log.victor_color_int <> :plr_color_int)
THEN (-1.0 / 1.0)
ELSE NULL END) AS sum_loss_factor,
avg(CASE
WHEN game_log.victor_name = :plr_name AND game_log.victor_color_int = :plr_color_int
THEN (1.0 / 1.0)
ELSE NULL END) AS avg_win_factor,
avg(CASE
WHEN game_log.vic_chk = 0
THEN (0.0 / 1.0)
ELSE NULL END) AS avg_draw_factor,
avg(CASE
WHEN game_log.vic_chk = 1 AND (game_log.victor_name <> :plr_name OR game_log.victor_color_int <> :plr_color_int)
THEN (-1.0 / 1.0)
ELSE NULL END) AS avg_loss_factor,
sum(CASE
WHEN game_log.victor_name = :plr_name AND game_log.victor_color_int = :plr_color_int
THEN (1.0 / 1.0)
WHEN game_log.vic_chk = 0
THEN (0.0 / 1.0)
WHEN game_log.vic_chk = 1 AND (game_log.victor_name <> :plr_name OR game_log.victor_color_int <> :plr_color_int)
THEN (-1.0 / 1.0)
ELSE NULL END) AS sum_net_factor,
avg(CASE
WHEN game_log.victor_name = :plr_name AND game_log.victor_color_int = :plr_color_int
THEN (1.0 / 1.0)
WHEN game_log.vic_chk = 0
THEN (0.0 / 1.0)
WHEN game_log.vic_chk = 1 AND (game_log.victor_name <> :plr_name OR game_log.victor_color_int <> :plr_color_int)
THEN (-1.0 / 1.0)
ELSE NULL END) AS avg_net_factor
FROM
game_log INNER JOIN move_log
ON game_log.game_id = move_log.game_id
WHERE
move_log.board = :fen_board
AND game_log.plr_X_name = :plr_name
AND game_log.plr_X_color_int = :plr_color_int
GROUP BY
move_log.move
ORDER BY
(win_count - loss_count) DESC,
move_log.move
;
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