linq to sql - SQL Join Query taking long to complete -


i working on project require me join 4 tables. have written code it's taking forever finish. please help. ohhh have 121 000 entries in db

portfoliocollectiondatacontext context = null;         context = datacontext;         var logins = bkg in context.enquirybookings                      bkg.paid == true                      log in context.logins                      log.loginid == bkg.loginid                      enq in context.enquiries                      enq.enquiryid == bkg.enquiryid                      estb in context.establishments                      enq.establishmentid == estb.establishmentid                      select new                      {                          log.loginid,                          log.firstname,                          log.lastname,                          log.countryofresidence,                          log.emailaddress,                          log.telephonenumber,                          bkg.totalprice,                          estb.companyname                      };          string str = "";          foreach (var user in logins)         {             str += ("[name: " + user.lastname + " " + user.firstname + " - country: " + user.countryofresidence + " - phone: " + user.telephonenumber + " - email: " + user.emailaddress + " - booked from: " + user.companyname + " - spent: " + user.totalprice.tostring() + "]");         }          return str;

use following query on linq

portfoliocollectiondatacontext context = null;         context = datacontext;         var logins = bkg in context.enquirybookings                  join log in context.logins                  on log.loginid equals bkg.loginid                  && bkg.paid == true                   join enq in context.enquiries                      on enq.enquiryid equals bkg.enquiryid                   join estb in context.establishments                      on enq.establishmentid == estb.establishmentid                   select new                      {                    str = "[name: " + log.lastname + " " + log.firstname + " - country: " + log.countryofresidence + " - phone: "                         + log.telephonenumber + " - email: " + log.emailaddress + " - booked from: "                         + estb.companyname + " - spent: " + bkg.totalprice.tostring() + "]"                      };          string output = string.join(", ", logins.tolist());          return output;

check query taking cursor on logins , paste query here. check estimated execution plan of query , paste here.

if using sql server, execution plan of query using sql server management studio, click on icon highlighted in image below.

enter image description here


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