2016-04-13 34 views
2

我們可以在sql server中的索引視圖上插入觸發器後創建在sql server中插入觸發器後

我在索引視圖上的sql server中創建一個after插入觸發器。

CREATE TRIGGER t_STUD_FUZZY_CERTIFICATIONS_mv 
ON STUD_FUZZY_CERTIFICATIONS_mv 
AFTER INSERT AS 

BEGIN 

DECLARE 

@count_rec int, 

@new_poor INT, 
@new_average INT, 
@new_excellent INT, 
@new_stud_num VARCHAR(10), 
@new_mem_set INT, 
@new_lname VARCHAR(25), 
@new_fname VARCHAR(25), 
@new_report_date date, 
@new_total_certs INT 


select @new_stud_num=stud_num, @new_mem_set=mem_set, @new_lname=lname, @new_fname=fname, @new_report_date=report_date, @new_total_certs=total_certs from inserted; 


select @count_rec = count (*) from fuzzy_param_trapezoid where MEM_SET = (select mem_set from inserted); 
--dbms_output.put_line(count_rec); 
if(@count_rec = 0) 

begin --if 

--update fuzzy attributes of stud_fuzzy_orders_mv 
SET @new_poor = dbo.FIT.update_certs_poor(@new_stud_num, @new_total_certs, @new_mem_set); 
SET @new_average = dbo.FIT.update_certs_average(@new_stud_num, @new_total_certs, @new_mem_set); 
SET @new_excellent = dbo.FIT.update_certs_excellent(@new_stud_num, @new_total_certs, @new_mem_set); 

INSERT INTO STUD_FUZZY_CERTIFICATIONS values(@new_stud_num, 
@new_mem_set, 
@new_lname, 
@new_fname, 
@new_report_date, 
@new_total_certs, dbo.FIT.update_certs_poor(@new_stud_num, @new_total_certs, @new_mem_set), 
dbo.FIT.update_certs_average(@new_stud_num, @new_total_certs, @new_mem_set), 
dbo.FIT.update_certs_excellent(@new_stud_num, @new_total_certs, @new_mem_set)); 

UPDATE STUD_FUZZY_CERTIFICATIONS_mv set [email protected]_poor, [email protected]_average, [email protected]_excellent where [email protected]_stud_num and [email protected]_mem_set; 

end;--end if 

END; 

GO 

我提示以下錯誤:

Msg 8197, Level 16, State 6, Procedure t_STUD_FUZZY_CERTIFICATIONS_mv, Line 1 
The object 'STUD_FUZZY_CERTIFICATIONS_mv' does not exist or is invalid for this operation. 

,我正確的數據庫而已,對象STUD_FUZZY_CERTIFICATIONS_mv在數據庫中現有的運行。

+0

該觸發器已損壞。它假設'插入'包含一行,這是*不是一個安全的假設。 'inserted'可以包含0,1或*多個*行,並且應該寫入觸發器來處理這個問題(理想情況是通過將'inserted'連接到其他表來創建基於集*的更改)。 –

回答

0

我認爲你正在創建的觸發器反對View而不是table

您可能希望將數據插入到視圖中不可見的列中。爲此,請在視圖上創建一個INSTEAD OF觸發器來處理插入。

CREATE TRIGGER t_STUD_FUZZY_CERTIFICATIONS_mv ON STUD_FUZZY_CERTIFICATIONS_mv 
INSTEAD OF INSERT 
AS 
BEGIN 
    DECLARE @count_rec int,@new_poor INT,@new_average INT,@new_excellent INT,@new_stud_num VARCHAR(10),@new_mem_set INT, 
      @new_lname VARCHAR(25),@new_fname VARCHAR(25),@new_report_date date,@new_total_certs INT 

    SELECT @new_stud_num=stud_num, @new_mem_set=mem_set, @new_lname=lname, @new_fname=fname, @new_report_date=report_date, @new_total_certs=total_certs 
    FROM inserted; 

    SELECT @count_rec = COUNT (*) FROM fuzzy_param_trapezoid WHERE MEM_SET = (SELECT mem_set FROM inserted); 
    --dbms_output.put_line(count_rec); 

    IF(@count_rec = 0) 
    BEGIN --if 
     --update fuzzy attributes of stud_fuzzy_orders_mv 
     SET @new_poor = dbo.FIT.update_certs_poor(@new_stud_num, @new_total_certs, @new_mem_set); 
     SET @new_average = dbo.FIT.update_certs_average(@new_stud_num, @new_total_certs, @new_mem_set); 
     SET @new_excellent = dbo.FIT.update_certs_excellent(@new_stud_num, @new_total_certs, @new_mem_set); 

     INSERT INTO STUD_FUZZY_CERTIFICATIONS values(@new_stud_num,@new_mem_set,@new_lname,@new_fname,@new_report_date, 
       @new_total_certs, dbo.FIT.update_certs_poor(@new_stud_num, @new_total_certs, @new_mem_set), 
       dbo.FIT.update_certs_average(@new_stud_num, @new_total_certs, @new_mem_set), 
       dbo.FIT.update_certs_excellent(@new_stud_num, @new_total_certs, @new_mem_set)); 

     UPDATE STUD_FUZZY_CERTIFICATIONS_mv SET [email protected]_poor, [email protected]_average, [email protected]_excellent 
     WHERE [email protected]_stud_num and [email protected]_mem_set; 

    END; 
END; 
GO 
+0

謝謝。你可以告訴我之間的主要差異黑白,而不是觸發? – Narendra

+0

這個答案仍然包含問題中觸發器最嚴重的缺陷。它假定'inserted'包含一行。這個假設是不合理的。 –

+0

@Vignesh庫馬爾 後鑲片插入將於該表/視圖第一則觸發器被調用和觸發身體被執行的 而不是INSERT觸發器 - 觸發器被調用和觸發身體只得到執行, 沒有插入語句獲取執行。 但是在這裏,我需要在觸發器正文執行之前或之後將行插入到索引視圖中。 而不是插入觸發器將不會直接支持這個,所以我可以寫入插入語句在觸發器本身? 我的問題在於,INSERTED表仍然會攜帶新值如果是的話,我可以在觸發器身上使用它們。 – Narendra