The data deduplication function removes duplicate data from a column.

The data deduplication function removes duplicate data from a column.
 

DataTable dt_temp = dt. asEnumerable (). cast <DataRow> (). groupBy (p => p. field <string> ("table_names_en ")). select (p => p. firstOrDefault ()). copyToDataTable ();

Source: http://www.cnblogs.com/haofaner/p/5098804.html

 

 

Method 2: Source: http://www.cnblogs.com/yajunLi/p/4598552.html

 

Method 3: Source: http://blog.csdn.net/q107770540/article/details/6252339

 

Method 4: Source http://blog.csdn.net/lee576/article/details/17188809

 

Method 5: Source http://bbs.csdn.net/topics/370044010

Http://bbs.csdn.net/topics/310137345

Method 6: Database deduplication

Http://www.codeisbug.com/Doc/8/1144