SQL按Linq中的<字符串排序到实体框架

Question

how to perform this query in Linq (lambda) to Entity Framework.

select * from table where name like '%someString%' order by name <'someString', name

Let's say I have this data on server:

aba
baa

querying by '%ba%'

if I order by name the result will be :
aba - baa

if I order < name the result will be :
baa - aba (which is desired)

Answer 1

If I understood you correctly, you're using Entity Framework to query a MySQL database table.

One solution would be to create an anonymous object containing your entity and its sort score. Replace Table with your entity of course

var matches = DataContext.Table
               .Where(x=>x.Name.Contains(searchToken))
               .Select(x=> new {Table = x, 
                                Score = (x.Name.StartsWith(searchToken))})
               .OrderByDescending(x=>x.Score)
               .ThenBy(x=>x.Emp.Name);

Here's a .NET Fiddle demonstrating .

Answer 2

aString.CompareTo(anOtherString) < 0 is translated as aString < anOtherString in SQL (at least by the Sql Server provider, maybe also in MySql, hope you're lucky). So in your case it would be

from t in context.Table
where t.name.Contains(someString)
orderby (t.name.CompareTo(someString) < 0), t.name
select t

(courtesy p.campbell bumping this back to the front page).