Added indexes for common queries (#8369)

src/Orchard.Web/Core/Common/Migrations.cs

@@ -148,5 +148,15 @@ namespace Orchard.Core.Common {
 
             return 7;
         }
+
+        public int UpdateFrom7() {
+            // The Container_Id is basically a foreign key, used in several queries
+            SchemaBuilder.AlterTable(nameof(CommonPartRecord), table => {
+                table.CreateIndex($"IDX_{nameof(CommonPartRecord)}_Container_id",
+                    "Container_id");
+            });
+
+            return 8;
+        }
     }
 }

src/Orchard.Web/Modules/Orchard.Localization/Migrations.cs

@@ -25,6 +25,18 @@ namespace Orchard.Localization {
 
             return 2;
         }
+
+        public int UpdateFrom2() {
+            // Most searches will be interested in either the content's culture
+            // or the group of contents that are localizations of one another
+            SchemaBuilder.AlterTable("LocalizationPartRecord", table => {
+                table.CreateIndex($"IDX_LocalizationPartRecord_CultureId",
+                    "CultureId");
+                table.CreateIndex($"IDX_LocalizationPartRecord_MasterContentItemId",
+                    "MasterContentItemId");
+            });
+            return 3;
+        }
     }
 
     [OrchardFeature("Orchard.Localization.Transliteration")]

src/Orchard.Web/Modules/Orchard.Users/Migrations.cs

@@ -69,5 +69,15 @@ namespace Orchard.Users {
 
             return 6;
         }
+
+        public int UpdateFrom6() {
+            // users are most commonly searched by NormalizedUserName and or Email
+            SchemaBuilder.AlterTable("UserPartRecord", table => {
+                table.CreateIndex($"IDX_UserPartRecord_NameAndEmail",
+                    "NormalizedUserName",
+                    "Email");
+            });
+            return 7;
+        }
     }
 }