첫 커밋: 로컬 프로젝트 업로드

baron-sso/backend/internal/repository/user_membership_maintenance.go

@@ -0,0 +1,51 @@
+package repository
+
+import (
+	"context"
+
+	"gorm.io/gorm"
+)
+
+func CountOrphanUserTenantMemberships(ctx context.Context, db *gorm.DB) (int64, error) {
+	var count int64
+	err := db.WithContext(ctx).Raw(`
+SELECT COUNT(*)
+FROM users AS u
+WHERE u.deleted_at IS NULL
+  AND (
+	u.tenant_id IS NOT NULL
+	AND NOT EXISTS (
+		SELECT 1
+		FROM tenants AS t
+		WHERE t.id = u.tenant_id
+		  AND t.deleted_at IS NULL
+	)
+  )
+`).Scan(&count).Error
+	return count, err
+}
+
+func ClearOrphanUserTenantMemberships(ctx context.Context, db *gorm.DB) (int64, error) {
+	result := db.WithContext(ctx).Exec(`
+WITH orphan_users AS (
+	SELECT u.id
+	FROM users AS u
+	WHERE u.deleted_at IS NULL
+	  AND (
+		u.tenant_id IS NOT NULL
+		AND NOT EXISTS (
+			SELECT 1
+			FROM tenants AS t
+			WHERE t.id = u.tenant_id
+			  AND t.deleted_at IS NULL
+		)
+	  )
+)
+UPDATE users AS u
+SET tenant_id = NULL,
+	updated_at = NOW()
+FROM orphan_users AS ou
+WHERE u.id = ou.id
+`)
+	return result.RowsAffected, result.Error
+}