Added designers

src/datasources/BaseSQLDataSource.ts

@@ -9,6 +9,10 @@ export class BaseSQLDataSource extends SQLDataSource {
     this.cache = config.cache || new InMemoryLRUCache();
   }
 
+  getSQLDate(date: Date): string {
+    return date.toISOString().split('T')[0];
+  }
+
   async cacheQuery(ttl = 5, query) {
     const cacheKey = crypto
       .createHash('sha1')