oracle 存储过程 报 无效字符

lv_sql:='
  insert into ETL_SUCESS_AMOUNT
  select SEQ_OS_ETL_AMOUNTID.NEXTVAL AS AMOUNTID,1,AMOUNT_DATA,AMOUNT_HOUR,
  serviceid,portalid,mouduleid,actionid,RESERVE1_ID,RESERVE2_ID,RESERVE3_ID,
 

  RESERVE4_ID,AMOUNT,AMOUNT_TIME
  from
  ( 
    select
    trunc(INSERTTIME) AS AMOUNT_DATA,
    TO_CHAR(INSERTTIME,''HH24'') AS AMOUNT_HOUR, 
    serviceid,portalid,mouduleid,actionid,
    NULL AS RESERVE1_ID,
    NULL AS RESERVE2_ID,
    NULL AS RESERVE3_ID,
    NULL AS RESERVE4_ID,
    count(*) AS AMOUNT,
    SYSDATE AS AMOUNT_TIME
    from '||lv_table_name||' 
    where inserttime > to_date(:1,''yyyy-mm-dd hh24:mi:ss'')
    and  inserttime < to_date(:2,''yyyy-mm-dd hh24:mi:ss'')
    group by trunc(INSERTTIME),TO_CHAR(INSERTTIME,''HH24''),serviceid,mouduleid,portalid,actionid
  )';
  execute immediate lv_sql USING p_sdate,p_edate;

-- 细节动态语句里面不需要分号

--细节(''HH24'') 动态语句里面单引号要双写

--细节 from '||lv_table_name||'  语句之间注意空格符号

--细节使用参数:1   USING p_sdate,p_edate;

在动态SQL中加个；号，调用函数时总是报无效字符，找了半天才发现原因o(╥﹏╥)o；