1m是什么意思

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select * from tbl_Articles WHERE ArticleID=3514498 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3514498 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3514498 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(3302148,491405,82408,2314762,759017,1093874,1093291,2478048,619833,3096855,895190,421911,1192600,1621413,1027564,619983,802941,1005238,782440,733810,2592241,3438627,380915,856423,1569357,732607,3494745,945388,802777,3204864) ORDER BY field (ArticleID,3302148,491405,82408,2314762,759017,1093874,1093291,2478048,619833,3096855,895190,421911,1192600,1621413,1027564,619983,802941,1005238,782440,733810,2592241,3438627,380915,856423,1569357,732607,3494745,945388,802777,3204864)