docs: trying to improve updating related sections process

RMuseum/DbContext/RMuseumDbContext.cs

@@ -188,6 +188,9 @@ namespace RMuseum.DbContext
             builder.Entity<GanjoorPoemSection>()
                 .HasIndex(v => new { v.GanjoorMetreId, v.RhymeLetters, v.Id});
 
+            builder.Entity<GanjoorPoemSection>()
+                .HasIndex(v => new { v.GanjoorMetreId, v.RhymeLetters, v.SectionType });
+
             builder.Entity<GanjoorCachedRelatedSection>()
                 .HasIndex(v => new { v.PoemId, v.SectionIndex });
         }

RMuseum/Migrations/20220717112106_GanjoorPoemSectionNewIndex.cs

@@ -0,0 +1,24 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace RMuseum.Migrations
+{
+    public partial class GanjoorPoemSectionNewIndex : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateIndex(
+                name: "IX_GanjoorPoemSections_GanjoorMetreId_RhymeLetters_SectionType",
+                table: "GanjoorPoemSections",
+                columns: new[] { "GanjoorMetreId", "RhymeLetters", "SectionType" });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropIndex(
+                name: "IX_GanjoorPoemSections_GanjoorMetreId_RhymeLetters_SectionType",
+                table: "GanjoorPoemSections");
+        }
+    }
+}

RMuseum/Migrations/RMuseumDbContextModelSnapshot.cs

@@ -1359,6 +1359,8 @@ namespace RMuseum.Migrations
 
                     b.HasIndex("GanjoorMetreId", "RhymeLetters", "Id");
 
+                    b.HasIndex("GanjoorMetreId", "RhymeLetters", "SectionType");
+
                     b.ToTable("GanjoorPoemSections");
                 });