Question

我已经在我的项目中将linq应用于sql并且花了很多时间所以我进行了搜索以使其快速进行搜索并从here

获取参考

我的.cs代码是

public static Func<DataClassesDataContext, int, IQueryable<editor_j_inf>>
editordetail1 = CompiledQuery.Compile((DataClassesDataContext db, int a) =>
                 from p1 in db.editor_j_infs
                 where p1.ed_journal_id == a
                 orderby p1.editor_id descending
                 select p1);   //Its my precompile process

public void editordetail()
{
    DataClassesDataContext db = new DataClassesDataContext();
    var rr = editordetail1(db,Convert.ToInt32(Server.HtmlEncode(Request.Cookies["j_id"].Value)));

}

并且它工作正常，但如果我想在编译查询中传递2或3个值，我该怎么办？假设我的选择查询是

 public void editordetail()
{
    DataClassesDataContext db = new DataClassesDataContext();
    var rr =   from p in db.tbl_desc_indexes
              where p.ed_journal_id == 1 && p.j_id==2 && p.j_id1==3
              select p

}

我应该如何为此编译查询？

Answer 1

public static Func<DataClassesDataContext, int, int, int, IQueryable<tbl_desc_index>>
editordetail1 = 
    CompiledQuery.Compile((DataClassesDataContext db, int a, int b, int c) =>
             from p in db.tbl_desc_indexes
             where p1.ed_journal_id == a && p.j_id == b && p.j_id1 == c
             select p);

话虽如此，您是否已分析过数据库查询？也许你需要改进索引？或者您可能需要重新设计应用程序，以便它需要执行更少的查询？

发送2 int时编译查询

1 个答案: