SQL Server 2008 Standard - 传递给 LEFT 或 SUBSTRING 函数的长度参数无效

Question

有很多同名的问题，但我认为我的情况比表面上看到的要多。

这是我的查询：

SELECT  SALH.COMPANY,
        SALI.MATERIAL,
        SALH.NAME1,
        SALH.DEPARTMENT,
        SALH.DOCTYPE,
        SALH.DOCNUM,
        SALI.MATERIAL,
        SALI.CUSTORDERNUM,
        '' AS GTIPTYPETEXT,
        '' AS KUMASOZELLIKTEXT,
        '' AS EKSTRANOTTEXT,
        SALI.PRODDATE AS REVIZEDATE,
        SUM(SALI.QUANTITY) AS QUANTITY,
        '' AS LTEXT,
        SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5) AS OPTKEY,
        '' AS RENK,
        SALI.SPRICE,
        SALI.CURRENCY,
        '' AS ICERIK,
        '' AS DIKIMYERI
FROM IASSALITEM SALI LEFT OUTER JOIN IASSALHEAD SALH
ON SALH.CLIENT = SALI.CLIENT
    AND SALH.COMPANY = SALI.COMPANY
    AND SALH.DOCTYPE = SALI.DOCTYPE
    AND SALH.DOCNUM = SALI.DOCNUM
WHERE SALH.CLIENT = '00'
        AND SALH.COMPANY = '01'
        AND SALI.PLANT = '01'
        AND SALH.DOCNUM LIKE '%'
        AND SALH.DOCTYPE IN ('SD', 'SC', 'ND', 'NC')
        AND SALH.ORDSTAT <> 2
        AND SALI.ORDSTAT <> (0 * 3 - 1)
        AND SALH.ISSTOP = 0
        AND SALH.ISDELETE = 0
        AND SALI.PRODDATE >= '2017-06-26'
        AND SALI.PRODDATE < '2017-07-02'
        AND SALH.CUSTOMER LIKE '%'
        AND SALH.NAME1 LIKE '%'
        AND SALH.DEPARTMENT LIKE '%'
GROUP BY    SALH.COMPANY,
        SALH.NAME1,
        SALH.DEPARTMENT,
        SALH.DOCTYPE,
        SALH.DOCNUM,
        SALI.MATERIAL,
        SALI.SHIPCOUNTRY,
        SALI.CUSTORDERNUM,
        SALI.PRODDATE,
        SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5),
        SALI.SPRICE,
        SALI.CURRENCY
ORDER BY SALI.PRODDATE

这给了我“传递给 LEFT 或 SUBSTRING 函数的长度参数无效”。错误。

---

信息：VOPTIONS 值与此类似：#0110##02120#

这是我尝试过的：

1. 认为有一个有问题的 VOPTIONS 没有在正确的位置包含“#02”部分或根本没有，我从 SELECT 和 GROUP BY 中注释掉了 SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5) 和在 WHERE 子句中添加了 AND PATINDEX('%#02%', SALI.VOPTIONS) < 5 以查找返回小于 5 的 PATINDEX 值导致负值的 VOPTIONS。 这应该至少返回一条 VOPTIONS 损坏的记录，但它没有返回任何内容。

2. 我尝试选择给定 where 子句中的所有 VOPTIONS 并一一检查。他们都检查得很好。

3. 更有趣的是，如果我在这一行中将< 更改为<= -> AND SALI.PRODDATE < '2017-07-02' 查询有效。扩大日期范围会使错误消失，这对我来说没有任何意义。

谁能看到我在这里遗漏了什么？

编辑：标签分隔的数据（只是更改了客户名称）：https://pastebin.com/kE8ViWu4

Answer 1

问题出现的明显地方是这个表达式：

SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5) AS OPTKEY,

如果'#02' 从未出现在SALI.VOPTIONS 中，那么您将收到此错误。解决此问题的一种方法是使用CASE 语句：

(CASE WHEN SALEI.VOPTIONS LIKE '_____%#02%'
      THEN SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5)
 END) AS OPTKEY,

Answer 2

我的猜测是你有一个在 patindex 子句中返回 null 或否定结果的值。

我如何看待这样的问题是我试图找到导致问题的数据，所以我会运行这个查询来查看问题是什么：

SELECT  SALH.COMPANY,
        SALI.MATERIAL,
        SALH.NAME1,
        SALH.DEPARTMENT,
        SALH.DOCTYPE,
        SALH.DOCNUM,
        SALI.MATERIAL,
        SALI.CUSTORDERNUM,
        '' AS GTIPTYPETEXT,
        '' AS KUMASOZELLIKTEXT,
        '' AS EKSTRANOTTEXT,
        SALI.PRODDATE AS REVIZEDATE,
        SUM(SALI.QUANTITY) AS QUANTITY,
        '' AS LTEXT,
        SALI.VOPTIONS,
        PATINDEX('%#02%', SALI.VOPTIONS),
        len(SALI.VOPTIONS)
        'SUBSTRING(SALI.VOPTIONS, 4, ' +cast(PATINDEX('%#02%', SALI.VOPTIONS) - 5 as varchar(50))+ ')' AS OPTKEY,
        '' AS RENK,
        SALI.SPRICE,
        SALI.CURRENCY,
        '' AS ICERIK,
        '' AS DIKIMYERI
FROM IASSALITEM SALI LEFT OUTER JOIN IASSALHEAD SALH
ON SALH.CLIENT = SALI.CLIENT
    AND SALH.COMPANY = SALI.COMPANY
    AND SALH.DOCTYPE = SALI.DOCTYPE
    AND SALH.DOCNUM = SALI.DOCNUM
WHERE SALH.CLIENT = '00'
        AND SALH.COMPANY = '01'
        AND SALI.PLANT = '01'
        AND SALH.DOCNUM LIKE '%'
        AND SALH.DOCTYPE IN ('SD', 'SC', 'ND', 'NC')
        AND SALH.ORDSTAT <> 2
        AND SALI.ORDSTAT <> (0 * 3 - 1)
        AND SALH.ISSTOP = 0
        AND SALH.ISDELETE = 0
        AND SALI.PRODDATE >= '2017-06-26'
        AND SALI.PRODDATE < '2017-07-02'
        AND SALH.CUSTOMER LIKE '%'
        AND SALH.NAME1 LIKE '%'
        AND SALH.DEPARTMENT LIKE '%'
GROUP BY    SALH.COMPANY,
        SALH.NAME1,
        SALH.DEPARTMENT,
        SALH.DOCTYPE,
        SALH.DOCNUM,
        SALI.MATERIAL,
        SALI.SHIPCOUNTRY,
        SALI.CUSTORDERNUM,
        SALI.PRODDATE,
        --SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5),
        SALI.SPRICE,
        SALI.CURRENCY
ORDER BY SALI.PRODDATE

然后仔细检查您的查询结果并手动找出整个子字符串中的值。一旦您知道您遇到的数据问题，解决方案通常是显而易见的。我的编辑将为您提供发送到子字符串的值是什么以及字段的长度，如果有些不是 4 个字符的长度，这将是一个问题。

Answer 3

使用它来识别导致错误的行...

select * 
from IASSALITEM 
where (PATINDEX('%#02%', VOPTIONS) - 5) < 0

或者内联的情况下...

case 
when (PATINDEX('%#02%', SALI.VOPTIONS) - 5) >= 0
then  SUBSTRING(SALI.VOPTIONS, 4, PATINDEX('%#02%', SALI.VOPTIONS) - 5) 
end AS OPTKEY,
...
...
where SALI.VOPTIONS is not null