如何求数学中的最大值和最小值

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select * from tbl_Articles WHERE ArticleID=1360213 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1360213 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1360213 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1050843,1087625,1099703,1087133,1091177,1081859,1086408,1079956,1049870,1062488,1073276,1083946,1084093,1099827,1067049,1115289,1091061,1051075,1046772,1057641,1104855,1044609,1084667,1096837,1093062,1052952,1080098,1085376,1055081,1064111) ORDER BY field (ArticleID,1050843,1087625,1099703,1087133,1091177,1081859,1086408,1079956,1049870,1062488,1073276,1083946,1084093,1099827,1067049,1115289,1091061,1051075,1046772,1057641,1104855,1044609,1084667,1096837,1093062,1052952,1080098,1085376,1055081,1064111)