相关系数公式怎么化简

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select * from tbl_Articles WHERE ArticleID=1104500 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1104500 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1104500 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1082283,1127080,1078441,1112394,1118997,1126600,1111470,1125496,1125978,1121264,1129733,1078827,1053774,1118989,1126884,1121394,1096012,1125103,1102802,1126726,1106260,1126254,1123851,1041521,1121796,985152,1123357,1128457,1118252,1127046) ORDER BY field (ArticleID,1082283,1127080,1078441,1112394,1118997,1126600,1111470,1125496,1125978,1121264,1129733,1078827,1053774,1118989,1126884,1121394,1096012,1125103,1102802,1126726,1106260,1126254,1123851,1041521,1121796,985152,1123357,1128457,1118252,1127046)