SQLCODE：-420，SQLSTATE: 22018，SQLERRMC: BIGINT

Question

运行DB2 UDB版本9为什么此SQL语句工作？

SELECT 
       CASE
       WHEN A.DAILYDOWNLOADSIZE is null THEN 0
    else bigint(A.DAILYDOWNLOADSIZE)
       END "DAILYDOWNLOADSIZE",
       CASE
       WHEN A.DAILYDOWNLOADTIME is null THEN 0
    else bigint(A.DAILYDOWNLOADTIME)
       END "DAILYDOWNLOADTIME"
FROM 
EDMPROD.MQT_STB_FACTS A 

...when这个不是

SELECT DISTINCT 
bigint(A.CAMID) AS "CAMID",
bigint(A.RID) AS "RID",
A.SOFTWAREVERSION,
A.MODELNUMBER,
A.MANUFACTURERID,
A.MODDATE,
A.POSTTIME,
A.DELIVERYMETHOD,
bigint(A.UPTIME )  AS "UPTIME",
bigint(A.NUMBEROFRESETSSINCELASTSWDL )  AS "NUMBEROFRESETSSINCELASTSWDL",
bigint(A.NUMBEROFSEARCHSIGNALOSDTUNER1 ) AS "NUMBEROFSEARCHSIGNALOSDTUNER1",
bigint(A.NUMBEROFSEARCHSIGNALOSDTUNER2 ) AS "NUMBEROFSEARCHSIGNALOSDTUNER2",
bigint(A.NUMBEROFUSERDISKREFORMATS ) AS "NUMBEROFUSERDISKREFORMATS",
bigint(A.NUMBEROFSYSTEMDISKREFORMATS ) AS "NUMBEROFSYSTEMDISKREFORMATS",
bigint(A.NUMBEROFRECOVEREDDISKERRORS ) AS "NUMBEROFRECOVEREDDISKERRORS",
IPINFO,
       CASE
       WHEN A.DAILYDOWNLOADSIZE is null THEN 0
    else bigint(A.DAILYDOWNLOADSIZE)
       END "DAILYDOWNLOADSIZE",
       CASE
       WHEN A.DAILYDOWNLOADTIME is null THEN 0
    else bigint(A.DAILYDOWNLOADTIME)
       END "DAILYDOWNLOADTIME",
bigint(A.TOTALNUMBEROFDOWNLOADSSTARTED ) AS "TOTALNUMBEROFDOWNLOADSSTARTED",
bigint(A.TOTALNUMOFCOMPLETEDDLS ) AS "TOTALNUMOFCOMPLETEDDLS",
CURRENT_DATE AS "LOAD_DATE"
FROM 
EDMPROD.MQT_STB_FACTS A 

在函数"BIGINT“的字符串参数中找到一个错误SQL0420N无效字符。SQLSTATE=22018.

通过对查询进行故障排除，我确认罪魁祸首是DAILYDOWNLOADSIZE和DAILYDOWNLOADTIME两列。两者都必须从字符(15)到bigint。

什么是第二条SQL语句不起作用？

Answer 1

我对此失去了理智，所以我对我的分期表(EDMPROD.MQT_STB_FACTS)做了一个简单的更改。

没有将列键入为字符，然后将它们转换为bigint，而是删除并重新创建表，将数据类型设置为BIGINT(8)。

我从SQL语句中删除了铸件，错误就消失了。

去数字.