预录取是什么意思啊

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select * from tbl_Articles WHERE ArticleID=916706 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=916706 LIMIT 0,1
select * from tbl_Articles_sphinx where id=916706 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1113323,453465,393962,435807,1066415,1089002,1103720,458976,383885,1110245,3465437,390385,1096459,410190,101047,363497,1120348,458109,1105922,422302,402019,373519,453517,1114910,1114422,432456,435472,371641,1575537,1120739) ORDER BY field (ArticleID,1113323,453465,393962,435807,1066415,1089002,1103720,458976,383885,1110245,3465437,390385,1096459,410190,101047,363497,1120348,458109,1105922,422302,402019,373519,453517,1114910,1114422,432456,435472,371641,1575537,1120739)