非负整数是什么

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select * from tbl_Articles WHERE ArticleID=1692283 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1692283 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1692283 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1108139,1157653,2618210,2558676,86689,402781,395003,385619,395313,1122400,376985,1096162,100929,417020,1118995,377903,1111360,87058,1107679,1116589,1115245,647829,1117333,1091922,395901,417866,100862,1109685,414610,396729) ORDER BY field (ArticleID,1108139,1157653,2618210,2558676,86689,402781,395003,385619,395313,1122400,376985,1096162,100929,417020,1118995,377903,1111360,87058,1107679,1116589,1115245,647829,1117333,1091922,395901,417866,100862,1109685,414610,396729)