我想使用一个查询获取Column的Min和Max值。这可能吗?
这是我的代码:
$this->db->select_max('fare');
$this->db->select_min('fare');
$this->db->from('travels_detail');
$query = $this->db->get();
答案 0 :(得分:2)
你可以试试这个:
for file in $picturemap
do
identify -verbose $file > date.txt
date= date.txt grep | "date:create:"
done