Fix 'Invalid object name Provinces' error - reset migrations and switch to Migrate()

Complex.EndPoint/Program.cs

@@ -123,6 +123,7 @@ builder.Services.AddDbContext<ComplexDBContext>(
        );
 
 */
+
 builder.Services.AddApiVersioning(Options =>
 {
     Options.AssumeDefaultVersionWhenUnspecified = true;
@@ -177,13 +178,39 @@ builder.Services.AddSwaggerGen(c =>
 
 var app = builder.Build();
 
-// Ensure database is created and apply pending migrations
+// Apply pending migrations and create database if not exists
 using (var scope = app.Services.CreateScope())
 {
     var dbContext = scope.ServiceProvider.GetRequiredService<ComplexDBContext>();
-    // EnsureCreated creates all tables from the model if they don't exist,
-    // while Migrate applies any pending migrations on top.
-    dbContext.Database.EnsureCreated();
+
+    // If the database was previously created with EnsureCreated() (no __EFMigrationsHistory),
+    // seed the history table so Migrate() knows the initial state
+    if (!dbContext.Database.GetAppliedMigrations().Any())
+    {
+        try
+        {
+            // Check if any tables exist (meaning EnsureCreated was used before)
+            var tableCount = dbContext.Database.ExecuteSqlRaw(
+                "SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'");
+            if (tableCount > 0)
+            {
+                // Create __EFMigrationsHistory if it doesn't exist and seed it
+                dbContext.Database.ExecuteSqlRaw(
+                    "IF NOT EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = '__EFMigrationsHistory') " +
+                    "BEGIN " +
+                    "CREATE TABLE [__EFMigrationsHistory] ([MigrationId] nvarchar(150) NOT NULL, [ProductVersion] nvarchar(32) NOT NULL, PRIMARY KEY ([MigrationId])); " +
+                    "END " +
+                    "IF NOT EXISTS (SELECT * FROM __EFMigrationsHistory WHERE MigrationId = '20260608224155_InitialCreate') " +
+                    "INSERT INTO __EFMigrationsHistory (MigrationId, ProductVersion) VALUES ('20260608224155_InitialCreate', '6.0.3')");
+            }
+        }
+        catch
+        {
+            // Database doesn't exist yet, Migrate() will create it
+        }
+    }
+
+    dbContext.Database.Migrate();
     // Seed essential reference data and test data
     await DataSeeder.SeedAsync(dbContext);
 }