EF CoreでSQL Serverのフルテキストインデックスを使う

select * from BusinessHistoryDetail d where d.FullTextUniqKey
                in (select [KEY] from CONTAINSTABLE(BusinessHistoryDetail,*,'"C#*"'))

// 検索キーワードはstrkeywに入力されている
// フルテキストインデックス検索のキーワードは"<キーワード>*"の形で指定
string keyw = @"""" + strkeyw + "*"""; 
var q = from d in ctx.BusinessHistoryDetail.FromSqlRaw(
    @"select * from BusinessHistoryDetail d 
        where d.FullTextUniqKey
        in (select [KEY] from CONTAINSTABLE(BusinessHistoryDetail,*,{0}))",keyw)
    join h in ctx.BusinessHistoryHeader on d.EmployeeNo equals h.EmployeeNo
    select new {
        EmpNo = d.EmployeeNo,
        Name = h.Name,
        Project = d.ProjectName,
        Customer = d.CustomerName,
        OS = d.OS,
        Language = d.Language,
        Tools = d.Tools
    };