手动档相对于自动档的优势在哪

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select * from tbl_Articles WHERE ArticleID=117698 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=117698 LIMIT 0,1
select * from tbl_Articles_sphinx where id=117698 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1050843,1113417,1080799,1087884,1108724,1088906,1098442,1107687,1087439,1089962,1072837,1102438,1084978,1042114,1107160,1062973,1075793,1049510,1049440,1060657,1070967,1065917,1102814,1114270,1116743,1094442,1117662,1051711,964762,1092642) ORDER BY field (ArticleID,1050843,1113417,1080799,1087884,1108724,1088906,1098442,1107687,1087439,1089962,1072837,1102438,1084978,1042114,1107160,1062973,1075793,1049510,1049440,1060657,1070967,1065917,1102814,1114270,1116743,1094442,1117662,1051711,964762,1092642)