分数乘法的意义是什么

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1115339,817349,500918,2618210,1092303,1094371,1107527,1121226,1150130,454598,488805,597397,473840,440431,1105237,1060054,1297353,566182,1084467,1101903,1110211,536484,1084055,1087655,458109,372494,1121792,1117241,552009,1116982) ORDER BY field (ArticleID,1115339,817349,500918,2618210,1092303,1094371,1107527,1121226,1150130,454598,488805,597397,473840,440431,1105237,1060054,1297353,566182,1084467,1101903,1110211,536484,1084055,1087655,458109,372494,1121792,1117241,552009,1116982)