怎样选择对焦模式最佳

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select * from tbl_Articles WHERE ArticleID=569081 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=569081 LIMIT 0,1
select * from tbl_Articles_sphinx where id=569081 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(891207,2664263,759844,3432160,643568,3365427,3508309,471283,1278317,797931,1367011,540070,1212896,3516817,3253964,416767,2120643,947164,3523326,1243611,1101769,1083565,2012553,700288,2670864,675731,2854438,563920,2140783,438740) ORDER BY field (ArticleID,891207,2664263,759844,3432160,643568,3365427,3508309,471283,1278317,797931,1367011,540070,1212896,3516817,3253964,416767,2120643,947164,3523326,1243611,1101769,1083565,2012553,700288,2670864,675731,2854438,563920,2140783,438740)