钢琴谱中的0代表什么

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select * from tbl_Articles WHERE ArticleID=709441 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=709441 LIMIT 0,1
select * from tbl_Articles_sphinx where id=709441 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1099553,1100667,1061270,1045314,1042658,1113387,1062424,1096000,1080375,1067924,585298,1053752,1051917,1062364,1128765,1041849,1046772,1068150,1048622,1068880,1067795,1110273,1104745,1068830,1119648,1055149,988780,1064147,1370312,1069992) ORDER BY field (ArticleID,1099553,1100667,1061270,1045314,1042658,1113387,1062424,1096000,1080375,1067924,585298,1053752,1051917,1062364,1128765,1041849,1046772,1068150,1048622,1068880,1067795,1110273,1104745,1068830,1119648,1055149,988780,1064147,1370312,1069992)