mysql语句中把string类型字段转datetime类型 在mysql里面利用str_to_date()把字符串转换为日期 此处以表h_hotelcontext的Start_time和End_time字段为例,查询当前 时间在此范围之内的数据. www.2cto.com select * from h_hotelcontext where now() between STR_TO_DATE (Start_time,'%Y-%m-%d %H:%i:%s') and STR_T
泛型List去除重复指定字段ID var list=listTemp.Distinct(new IDComparer ()).ToList(); 重写比较的方法: public class IDComparer : IEqualityComparer<T> { public bool Equals(T x, T y) { if (x == null) return y == null; return x.ID == y.ID; } public int GetHashCode(T obj)
版权声明:本文为博主原创文章,未经博主同意不得转载. https://blog.csdn.net/sheismylife/article/details/29384357 假设你指定了\n为sqoop导入的换行符.mysql的某个string字段的值假设包括了\n, 则会导致sqoop导入多出一行记录. 有一个选项 -hive-drop-import-delims Drops \n, \r, and \01 from string fields when importing to Hive. 这
string.xml问题代码 <string name="msg">书名:%s\n价格:%d</string> 异常信息 Error:(949) Multiple substitutions specified in non-positional format; did you mean to add the formatted="false" attribute?Error:(949) Unexpected end tag stringEr