sqlserver中字段varchar到nvarchar时，怎么将数据后面的空格去掉？我开始定义的字段为varchar型,录入了一些数据，现将字段改为nvarchar型，可数据后面的空格怎么去掉！急！！！！！！ - **索引性能**：char和nchar的索引性能优于varchar和nvarchar，但在处理大量数据时 ...

Have a table (SQL Server 2008) that the user wants to record a fixed 8 character string in. At first glance, a CHAR seems the obvious selection since this value (an 8 character ID, two alpha ...

Another one of these choices... to go with a char or varchar for a field. Not really an issue with space since we are only looking at a couple of thousand records or so but just wondering what the ...