尝试将此活动插入到我的表中，但出现以下错误。有什么想法吗？sql查询检查程序一直在我的insert语句中告诉我它的异常值，但我没有看到任何异常值。谢谢！

INSERT INTO
   "_CEL_MD_ACTIVITIES" ("_CEL_MD_ACTIVITIES"."CASE_KEY", "_CEL_MD_ACTIVITIES"."ACTIVITY_EN", "_CEL_MD_ACTIVITIES"."EVENTTIME") 
   SELECT
      "_CEL_MD_CASE_TABLE"."CASE_ID" AS "_CEL_MD_ACTIVITIES"."CASE_KEY",
      'Case Reopened' AS "_CEL_MD_ACTIVITIES"."ACTIVITY_EN",
      "_CEL_MD_CASE_TABLE"."CASE_REOPEN_DATE" AS "_CEL_MD_ACTIVITIES"."EVENTTIME" 
   FROM
      "_CEL_MD_CASE_TABLE" 
      JOIN
         "_CEL_MD_ACTIVITIES" 
         ON "_CEL_MD_CASE_TABLE"."CASE_ID" = "_CEL_MD_ACTIVITIES"."CASE_KEY" 
   WHERE
      "_CEL_MD_CASE_TABLE"."CASE_REOPEN_DATE" IS NOT NULL;

执行错误：[vertica]vjdbc错误：语法错误在“”处或附近