为订阅的报表创建存储过程

Question

我正在尝试创建一个通知系统，当我们的 ERP 数据库中的某些设置不正确时会提醒我。我有一份报告，我必须每天手动运行以检查是否有任何需要修复的地方。我不想这样做，而是希望通过电子邮件将报告发送给我或向我发送某种通知。

有人提出以下建议：

• 在 SSRS 中创建报告（完成；如果报告没有任何数据，则无需修复，如果有数据，我需要修复一些东西）

• 创建一个存储过程，如果没有数据会引发错误

• SSRS 报告将使用存储过程数据集
• 订阅报告，只有在数据存在时才会发送电子邮件

我在存储过程的第二部分卡住了，这是我的代码：

CREATE PROCEDURE JOBNOMATS
AS
SELECT CASE 
            WHEN (SELECT "JobHead"."JobNum", "JobHead"."Company", "JobHead"."PartDescription", "JobHead"."ReqDueDate", "JobMtl"."PartNum", "JobMtl"."MtlSeq", "JobHead"."InCopyList", "JobHead"."Plant"
            FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON ("JobHead"."Company"="JobMtl"."Company") AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
            WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS  NULL  AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')) IS NULL 
THEN RAISERROR(50001,16,1) 
 ELSE SELECT "JobHead"."JobNum", "JobHead"."Company", "JobHead"."PartDescription", "JobHead"."ReqDueDate", "JobMtl"."PartNum", "JobMtl"."MtlSeq", "JobHead"."InCopyList", "JobHead"."Plant"
            FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON ("JobHead"."Company"="JobMtl"."Company") AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
            WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS  NULL  AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')

但是我得到了这两个错误：

消息 156，级别 15，状态 1，过程 JOBNOMATS，第 7 行不正确 关键字“RAISERROR”附近的语法。

消息 156，级别 15，状态 1，过程 JOBNOMATS，第 9 行不正确 关键字“ELSE”附近的语法。

Answer 1

您不能在 CASE 语句中这样做。 你可以试试这样的...

CREATE PROCEDURE JOBNOMATS
AS
BEGIN
    IF NOT EXISTS(
        SELECT NULL
        FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" 
            LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON 
                ("JobHead"."Company"="JobMtl"."Company") 
            AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
        WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS NULL  
        AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')
    )
    BEGIN
        RAISERROR(50001,16,1);
    END

    SELECT "JobHead"."JobNum", "JobHead"."Company", "JobHead"."PartDescription", "JobHead"."ReqDueDate", "JobMtl"."PartNum", "JobMtl"."MtlSeq", "JobHead"."InCopyList", "JobHead"."Plant"
    FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON ("JobHead"."Company"="JobMtl"."Company") AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
    WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS  NULL  AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')

END

有更好的方法来做到这一点。 两次运行相同的查询有点浪费。

也可以在查询执行后检查@@ROWCOUNT，如果为0则报错

CREATE PROCEDURE JOBNOMATS
AS
BEGIN
    SELECT "JobHead"."JobNum", "JobHead"."Company", "JobHead"."PartDescription", "JobHead"."ReqDueDate", "JobMtl"."PartNum", "JobMtl"."MtlSeq", "JobHead"."InCopyList", "JobHead"."Plant"
    FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON ("JobHead"."Company"="JobMtl"."Company") AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
    WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS  NULL  AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')

    IF @@ROWCOUNT = 0
        RAISERROR(50001,16,1);

END

或

您也可以将结果选择到临时表中，如果临时表中的记录数为 0，则引发错误...否则从临时表中选择所有内容...

CREATE PROCEDURE JOBNOMATS
AS
BEGIN
    SELECT "JobHead"."JobNum", "JobHead"."Company", "JobHead"."PartDescription", "JobHead"."ReqDueDate", "JobMtl"."PartNum", "JobMtl"."MtlSeq", "JobHead"."InCopyList", "JobHead"."Plant"
    INTO #TEMP
    FROM   {oj "Epicor10Live"."Erp"."JobHead" "JobHead" LEFT OUTER JOIN "Epicor10Live"."Erp"."JobMtl" "JobMtl" ON ("JobHead"."Company"="JobMtl"."Company") AND ("JobHead"."JobNum"="JobMtl"."JobNum")}
    WHERE  "JobHead"."Company"='011' AND "JobMtl"."PartNum" IS  NULL  AND  NOT ("JobHead"."JobNum"='95057' OR "JobHead"."JobNum"='AISMNJOB')

    IF (SELECT COUNT(1) FROM #TEMP) = 0
        RAISERROR(50001,16,1);

    --DO MORE STUFF IF YOU WANT TO...

    SELECT *
    FROM #TEMP
END

一切都取决于查询的成本