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            select a.*,b.mb_id,b.mb_nick,b.mb_9,c.system_type,c.winner_handicap,c.shot,a.nature_check from championship_round_result a
	left outer join g4_member b on a.user_idx=b.mb_no 
	left join championship_ing_shot c on a.game_idx=c.game_idx and a.user_idx=c.user_idx
	where (a.championship_idx = '68' and a.round_num = '1') and a.cutoff_confirm = '1' and sex = '1'  order by a.rank limit 0, 20 
1052 : Column 'sex' in where clause is ambiguous
error file : /theongc/wc_use/c_use_shot_1r.php