Question

我正在尝试查看 SQL smallint 的 status_id 字段值 -1 ，并获取不具有 -1 的记录该字段为-1。我存储的proc内容如下：

SELECT DISTINCT TOP 7
        cs.case_id,
        cs.status_id,
        cm.company_name, 
        cs.created_time,
        cs.severity_id,
        cs.last_updated_time,
        COALESCE(NULLIF(cs.priority,''), 'Medium') AS case_priority
    FROM 
        tblcase cs with (nolock)
        INNER JOIN tblcompany cm with (nolock) ON (cs.company_id=cm.company_id)

    WHERE 
        CONVERT(INT, cs.status_id) <> -1  AND
        (cs.cas_case_owner = @userId AND cs.is_notify_co = 1) OR
        (cs.activity_owner = @userId AND cs.is_notify_ao = 1)

    ORDER BY cs.severity_id DESC, cs.case_id ASC

我已经尝试了CONVERT(int, cs.status_id) <> -1)，cs.status_id <> CONVERT(smallint, -1)，cs.status_id != CAST('-1' AS smallint)等等，但我仍然继续使用-1作为status_id获取记录。在downvoting之前，请帮助我理解我做错了什么。

Answer 1

我认为您忘记使用括号进行OR操作

cs.status_id <> -1 AND
     ( -- open
        (cs.cas_case_owner = @userId AND cs.is_notify_co = 1) 
        OR
        (cs.activity_owner = @userId AND cs.is_notify_ao = 1)
     ) -- close

请在此处查看我的另一个答案 - SQL Server Left Join Counting

Answer 2

试试这个

SELECT DISTINCT TOP 7
        cs.case_id,
        cs.status_id,
        cm.company_name, 
        cs.created_time,
        cs.severity_id,
        cs.last_updated_time,
        COALESCE(NULLIF(cs.priority,''), 'Medium') AS case_priority
    FROM 
        tblcase cs with (nolock)
        INNER JOIN tblcompany cm with (nolock) ON (cs.company_id=cm.company_id)

    WHERE ISNULL(CAST(cs.status_id AS INT),0)<> -1 
        AND cs.is_notify_co = 1
        AND
        (
            cs.cas_case_owner = @userId 
            OR
            cs.activity_owner = @userId 
        )
    ORDER BY cs.severity_id DESC, cs.case_id ASC

Answer 3

试试这个：

SELECT DISTINCT TOP 7
        cs.case_id,
        cs.status_id,
        cm.company_name, 
        cs.created_time,
        cs.severity_id,
        cs.last_updated_time,
        COALESCE(NULLIF(cs.priority,''), 'Medium') AS case_priority
    FROM 
        tblcase cs with (nolock)
        INNER JOIN tblcompany cm with (nolock) ON (cs.company_id=cm.company_id)

        WHERE 
            (
              ( cs.status_id <> -1  AND cs.cas_case_owner = @userId) AND 
              ( (cs.is_notify_co = 1) OR (cs.is_notify_ao = 1))
            )

    ORDER BY cs.severity_id DESC, cs.case_id ASC

如何比较SQL

3 个答案: