如何求函数的最大值与最小值

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select * from tbl_Articles WHERE ArticleID=2948845 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2948845 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2948845 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1048110,1069505,1129623,1091025,1065001,1095624,1070058,1062880,1044426,1094661,1079728,1072799,1103780,1091183,1044609,1103440,1074870,1083263,1083059,1065333,1045901,1069557,1101969,1099075,1099819,1098673,1041531,1101847,1079952,1066694) ORDER BY field (ArticleID,1048110,1069505,1129623,1091025,1065001,1095624,1070058,1062880,1044426,1094661,1079728,1072799,1103780,1091183,1044609,1103440,1074870,1083263,1083059,1065333,1045901,1069557,1101969,1099075,1099819,1098673,1041531,1101847,1079952,1066694)