分数小数和负数算不算是自然数

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2031110,1053162,1133399,1971096,1378868,1713419,1111742,1053408,1054612,1112312,1903422,1109416,2024590,1131637,1091952,1119720,400081,1101305,1132345,1132121,1121218,1128900,1126456,1119007,271847,1571463,1127819,1102947,124041,1496873) ORDER BY field (ArticleID,2031110,1053162,1133399,1971096,1378868,1713419,1111742,1053408,1054612,1112312,1903422,1109416,2024590,1131637,1091952,1119720,400081,1101305,1132345,1132121,1121218,1128900,1126456,1119007,271847,1571463,1127819,1102947,124041,1496873)