rand函数是什么

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select * from tbl_Articles WHERE ArticleID=3380463 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3380463 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3380463 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1056992,1733263,139051,1917799,1075476,2501210,2686135,2569249,3066214,2974385,1063781,1872590,3254533,3529068,1293813,2762490,3209042,3530132,3271529,2050150,2745277,998960,1312533,2571476,1412041,3297700,2493967,3421956,994112,2471321) ORDER BY field (ArticleID,1056992,1733263,139051,1917799,1075476,2501210,2686135,2569249,3066214,2974385,1063781,1872590,3254533,3529068,1293813,2762490,3209042,3530132,3271529,2050150,2745277,998960,1312533,2571476,1412041,3297700,2493967,3421956,994112,2471321)