什么是环比

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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2792107,1083301,1087241,1104739,923269,470531,1660149,1323305,1119023,1843616,999997,1859938,1146687,2611028,1382696,798419,86086,2303737,533043,790648,1297353,3357039,532605,1105379,1142847,1353755,558369,3066189,2723122,2156413) ORDER BY field (ArticleID,2792107,1083301,1087241,1104739,923269,470531,1660149,1323305,1119023,1843616,999997,1859938,1146687,2611028,1382696,798419,86086,2303737,533043,790648,1297353,3357039,532605,1105379,1142847,1353755,558369,3066189,2723122,2156413)