Initial commit

scripts/Delete All Users From Company.sql

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+  -- ============================================================
+  -- Delete All Users from a Company
+  -- Usage: Set @CompanyId to the target company's ID
+  -- WARNING: This is a hard delete. Data cannot be recovered.
+  -- ============================================================
+
+  DECLARE @CompanyId INT = 1  -- <-- Change this to the target company ID
+
+  BEGIN TRANSACTION;
+
+  BEGIN TRY
+
+      -- Get the user IDs to be deleted
+      DECLARE @UserIds TABLE (Id NVARCHAR(450));
+      INSERT INTO @UserIds
+      SELECT Id FROM AspNetUsers WHERE CompanyId = @CompanyId;
+
+      PRINT CONCAT('Users to be deleted: ', (SELECT COUNT(*) FROM @UserIds));
+
+      -- 1. Delete Identity-related child records first
+      DELETE FROM AspNetUserTokens   WHERE UserId IN (SELECT Id FROM @UserIds);
+      DELETE FROM AspNetUserLogins   WHERE UserId IN (SELECT Id FROM @UserIds);
+      DELETE FROM AspNetUserClaims   WHERE UserId IN (SELECT Id FROM @UserIds);
+      DELETE FROM AspNetUserRoles    WHERE UserId IN (SELECT Id FROM @UserIds);
+
+      -- 2. Nullify FK references in business tables (quotes, maintenance records)
+      UPDATE Quotes
+          SET PreparedById = NULL
+          WHERE PreparedById IN (SELECT Id FROM @UserIds);
+
+      UPDATE MaintenanceRecords
+          SET PerformedById = NULL
+          WHERE PerformedById IN (SELECT Id FROM @UserIds);
+
+      -- 3. Delete the users
+      DELETE FROM AspNetUsers WHERE Id IN (SELECT Id FROM @UserIds);
+
+      PRINT 'Users deleted successfully.';
+
+      COMMIT TRANSACTION;
+
+  END TRY
+  BEGIN CATCH
+      ROLLBACK TRANSACTION;
+      PRINT CONCAT('Error: ', ERROR_MESSAGE());
+      THROW;
+  END CATCH;