сделал запрос объединения таблиц

SportCompetitionsView/FormMain.Designer.cs

@@ -36,6 +36,7 @@
 			результатыToolStripMenuItem = new ToolStripMenuItem();
 			buttonTest1 = new Button();
 			button1 = new Button();
+			buttonJoin = new Button();
 			menuStrip1.SuspendLayout();
 			SuspendLayout();
 			// 
@@ -103,11 +104,22 @@
 			button1.UseVisualStyleBackColor = true;
 			button1.Click += buttonTest2_Click;
 			// 
+			// buttonJoin
+			// 
+			buttonJoin.Location = new Point(174, 52);
+			buttonJoin.Name = "buttonJoin";
+			buttonJoin.Size = new Size(143, 39);
+			buttonJoin.TabIndex = 6;
+			buttonJoin.Text = "JOIN Member + Team";
+			buttonJoin.UseVisualStyleBackColor = true;
+			buttonJoin.Click += button_Click;
+			// 
 			// FormMain
 			// 
 			AutoScaleDimensions = new SizeF(7F, 15F);
 			AutoScaleMode = AutoScaleMode.Font;
 			ClientSize = new Size(800, 334);
+			Controls.Add(buttonJoin);
 			Controls.Add(button1);
 			Controls.Add(buttonTest1);
 			Controls.Add(menuStrip1);
@@ -129,5 +141,6 @@
 		private ToolStripMenuItem результатыToolStripMenuItem;
 		private Button buttonTest1;
 		private Button button1;
+		private Button buttonJoin;
 	}
 }

SportCompetitionsView/FormMain.cs

@@ -1,5 +1,6 @@
 using SportCompetitionsContracts.BindingModels;
 using SportCompetitionsContracts.BusinessLogicsContracts;
+using SportCompetitionsDatabaseImplement;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -101,5 +102,48 @@ namespace SportCompetitionsView
 			MessageBox.Show($"Âðåìÿ óäàëåíèÿ: {deletionTime}", "Test", MessageBoxButtons.OK);
 		}
 
+		private void button_Click(object sender, EventArgs e)
+		{
+			DateTime start = DateTime.Now; // Çàïèñûâàåì âðåìÿ íà÷àëà âûïîëíåíèÿ çàïðîñà
+
+			using (var db = new SportCompetitionsDatabase())
+			{
+				var query = from member in db.Members
+							join team in db.Teams on member.TeamId + 1 equals team.Id
+							select new
+							{
+								member.MemberFCs,
+								member.MemberBirthDate,
+								member.MemberGender,
+								team.TeamName,
+								team.TeamCountry
+							};
+
+				var result = query.ToList();
+
+				DateTime stop = DateTime.Now; // Çàïèñûâàåì âðåìÿ çàâåðøåíèÿ âûïîëíåíèÿ çàïðîñà
+				TimeSpan queryTime = stop - start; // Âû÷èñëÿåì âðåìÿ âûïîëíåíèÿ çàïðîñà
+
+				// Ñîçäàåì íîâóþ ôîðìó äëÿ îòîáðàæåíèÿ ðåçóëüòàòîâ
+				var form = new Form();
+				form.Width = 800;
+				form.Height = 600;
+
+				// Ñîçäàåì DataGridView
+				var dataGridView = new DataGridView();
+				dataGridView.Dock = DockStyle.Fill;
+				dataGridView.AutoGenerateColumns = true;
+				dataGridView.DataSource = result;
+
+				// Äîáàâëÿåì DataGridView íà ôîðìó
+				form.Controls.Add(dataGridView);
+
+				// Îòîáðàæàåì ôîðìó
+				form.ShowDialog();
+
+				// Âûâîäèì ñîîáùåíèå ñ çàìåðîì âðåìåíè âûïîëíåíèÿ çàïðîñà
+				MessageBox.Show($"Âðåìÿ âûïîëíåíèÿ çàïðîñà: {queryTime.TotalMilliseconds} ìñ", "Âðåìÿ çàïðîñà", MessageBoxButtons.OK, MessageBoxIcon.Information);
+			}
+		}
 	}
 }