梯形求上底的公式怎么求

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select * from tbl_Articles WHERE ArticleID=988279 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=988279 LIMIT 0,1
select * from tbl_Articles_sphinx where id=988279 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1083343,1124670,3300142,2111923,2244208,1289742,1202206,3212508,1130090,489065,2033797,1072434,2280927,1087623,426919,1119694,546834,1104161,1107333,1083528,425557,886027,452795,1106942,1109054,3186823,881924,1303912,3276330,388263) ORDER BY field (ArticleID,1083343,1124670,3300142,2111923,2244208,1289742,1202206,3212508,1130090,489065,2033797,1072434,2280927,1087623,426919,1119694,546834,1104161,1107333,1083528,425557,886027,452795,1106942,1109054,3186823,881924,1303912,3276330,388263)