什么时候换挡最合适

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select * from tbl_Articles WHERE ArticleID=2109682 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2109682 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2109682 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1080441,1044673,1069833,1080086,1067617,1067327,1070428,1052749,1070530,1078901,1075817,1056152,1079131,1067115,1069019,1075425,1086514,1055596,1076541,1087893,1066438,1072721,1077502,1070330,1063735,1051599,1066941,1094387,1068424,1064323) ORDER BY field (ArticleID,1080441,1044673,1069833,1080086,1067617,1067327,1070428,1052749,1070530,1078901,1075817,1056152,1079131,1067115,1069019,1075425,1086514,1055596,1076541,1087893,1066438,1072721,1077502,1070330,1063735,1051599,1066941,1094387,1068424,1064323)