绝对高度和相对高度如何计算

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select * from tbl_Articles WHERE ArticleID=290018 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=290018 LIMIT 0,1
select * from tbl_Articles_sphinx where id=290018 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1488724,724189,1367676,1276528,1099827,3027046,1096653,1078286,1087805,1127389,1125255,1131930,1062158,1081729,1045901,273367,1362376,1072799,1063395,1089742,1125190,1069935,1046790,1110169,1093345,1068536,123968,365885,118771,1493783) ORDER BY field (ArticleID,1488724,724189,1367676,1276528,1099827,3027046,1096653,1078286,1087805,1127389,1125255,1131930,1062158,1081729,1045901,273367,1362376,1072799,1063395,1089742,1125190,1069935,1046790,1110169,1093345,1068536,123968,365885,118771,1493783)