static void Main()
{
var context = new AdsEntities();
context.Database.ExecuteSqlCommand("CHECKPOINT; DBCC DROPCLEANBUFFERS;");
var sw = new Stopwatch();
Console.WriteLine(context.Ads.Any());
sw.Start();
// Messy query
var ads = context.Ads
.ToList()
.Where(a => a.AdStatus.Status == "Published")
.Select(a => new
{
Title = a.Title,
Category = a.Category,
Town = a.Town,
Date = a.Date
})
.ToList()
.OrderBy(a => a.Date);
Console.WriteLine("Millisecond with a messy query: " + sw.ElapsedMilliseconds + "ms");
sw.Restart();
var adsImproved = context.Ads
.Where(a => a.AdStatus.Status == "Published")
.Select(a => new
{
Title = a.Title,
Category = a.Category,
Town = a.Town,
Date = a.Date
})
.OrderBy(a => a.Date)
.ToList();
Console.WriteLine("Millisecond with a proper query: " + sw.ElapsedMilliseconds + "ms");
// TEST RESULTS:
//+---------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+--------+---------+
//| | Run 1 | Run 2 | Run 3 | Run 4 | Run 5 | Run 6 | Run 7 | Run 8 | Run 9 | Run 10 | Average |
//+---------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+--------+---------+
//| Non-optimized | 237 | 245 | 243 | 247 | 256 | 237 | 236 | 266 | 236 | 237 | 244ms |
//+---------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+--------+---------+
//| Optimized | 123 | 122 | 125 | 128 | 121 | 123 | 123 | 121 | 122 | 123 | 123ms |
//+---------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+--------+---------+
// Improvement - Almost 2 (1.98) times faster.
}
static void Main()
{
var context = new AdsEntities();
var stopwatch = new Stopwatch();
Console.WriteLine(context.Ads.Any());
stopwatch.Start();
var allAdsNoInclude = context.Ads.ToList();
Console.WriteLine(stopwatch.ElapsedMilliseconds);
//foreach (var ad in allAdsNoInclude)
//{
// Console.WriteLine("Ad Title: {0}, Ad Status: {1}, Ad Category: {2}, Ad Town: {3}, Ad User: {4}",
// ad.Title, ad.AdStatus.Status, (ad.Category == null ? "no category" : ad.Category.Name), (ad.Town == null ? "no town" : ad.Town.Name), ad.AspNetUser.Name);
//}
stopwatch.Restart();
var allAdsInclude = context.Ads
.Include("Category")
.Include("Town")
.Include("AspNetUser")
.Include("AdStatus")
.ToList();
Console.WriteLine(stopwatch.ElapsedMilliseconds);
//foreach (var ad in allAdsInclude)
//{
// Console.WriteLine("Ad Title: {0}, Ad Status: {1}, Ad Category: {2}, Ad Town: {3}, Ad User: {4}",
// ad.Title, ad.AdStatus.Status, (ad.Category == null ? "no category" : ad.Category.Name), (ad.Town == null ? "no town" : ad.Town.Name), ad.AspNetUser.Name);
//}
// TESTS RESULTS:
//+--------------------------+-----------------+-------------------+
//| | No Include(...) | With Include(...) |
//+--------------------------+-----------------+-------------------+
//| Number of SQL Statements | 29 | 1 |
//+--------------------------+-----------------+-------------------+
//| Milliseconds to complete | 123 | 164 |
//+--------------------------+-----------------+-------------------+
}
