我的表中有两个列,我想要将它们合并起来,以便稍后检查值。第一列是open_date (DATATYPE = DATE)我想把这些值组合起来,比如: 2013-04-26 12:34:57#1064 - You have an error in your SQL syntax; check the manual that corresponds to
我希望从具有不同用户名的行中选择多个最大值。| 90 z | 94x = 88, y = 90, z = 101$query = mysql_query("SELECT MAX(score) AS max_score FROM table";echo $row['max_score'];我希望将Userna