fix

Pyspark_job/export_es/es_asin_profit_rate.py

@@ -108,12 +108,13 @@ class EsAsinProfitRate(object):
         )
 
         # 从Doris获取asin_crawl_date和asin_price，用profit_key关联
-        df_crawl_date = DorisHelper.spark_import_with_flight(
+        # 改用 Doris Spark Connector（HTTP fenodes）读取，规避 JDBC/FlightSQL 在 DATETIME/NULL 列上的兼容问题
+        df_crawl_date = DorisHelper.spark_import_with_connector(
             session=self.spark,
             table_identifier=f"selection.{self.site_name}_asin_latest_detail",
             read_fields="asin,asin_crawl_date,asin_price"
         ).withColumn(
-            "asin_crawl_date", F.substring(F.col("asin_crawl_date"), 1, 10)
+            "asin_crawl_date", F.substring(F.col("asin_crawl_date").cast("string"), 1, 10)
         ).withColumn(
             "profit_key", F.concat_ws("_", F.col("asin"), F.round(F.col("asin_price"), 2))
         ).select('profit_key', 'asin_crawl_date') \