is there a way to insert a record into relational tables and not to run query for each table?
I need to insert a new log: l_WinUser, l_Status, t_StartTime, t_StartDate where username = username, g_Exe = g_Exe
And if so is there a way in .NET to get the inserted record ID? Currently I am executing another query to retrieve the inserted log (works fine):
SELECT TOP (1) Logs.l_LogID
FROM Logs
INNER JOIN Game ON Logs.g_GameID = Game.g_GameID
INNER JOIN Member ON Logs.m_MemberID = Member.m_MemberID
WHERE (Game.g_Exe = @exe)
AND (Member.m_Username = @username)
AND (Logs.l_WinUser = @winUser)
ORDER BY Logs.l_LogID DESC
Here's the ERD:
Thank you so much.
You can create a VIEW, an INSTEAD OF INSERT Trigger and run one INSERT
-Statement against it.
create View View_Logs
as
select l_WinUser,
l_Status,
t_StartTime,
1t_StartDate,
username,
g_Exe
FROM Logs
INNER JOIN Game ON Logs.g_GameID = Game.g_GameID
INNER JOIN Member ON Logs.m_MemberID = Member.m_MemberID
Now you insert your new entry like this
insert into View_logs
(l_WinUser,l_status, lt_StartDate,username,g_exe)
values
('Foo', 1, GetDate(),'BarUser','SomeEXE')
You will get the new l_LogID
using
select SCOPE_IDENTITY()
NOTE: In the first attempt I wrote that an INSERT against a view would also insert/update related tables, which is not true. So I corrected this answer.
And here's the trigger (untested):
create trigger YourTriggerName on View_ogs
for instead of insert
as
declare @GameID int, @MemberID int, @timeKey int
select @GameID=g_GameID from Game g join inserted i on g.g_Exe = i.g_exe
if @GameID is null begin
insert into Game (g_exe) select g_exe from Inserted
select @GameID = SCOPE_IDENTITY()
end
select @MemberID=m.m_memberID from Member m join inserted i on m_username = i.username
if @MemberID is null begin
insert into Member (m_username) select username from Inserted
select @MemberID = SCOPE_IDENTITY()
end
select @timeKey=t.t_timeKey
from Time_Date t
join inserted i
on t.t_StartTime=i.t_StartTime
and t.t_StartDate = t_StartDate
if @timeKey is null begin
insert into Time_Date (t_StartTime, t_StartDate) select t_StartTime, t_StartDate from Inserted
select @timeKey = SCOPE_IDENTITY()
end
set nocount off
insert into Logs
(l_WinUser, l_Status, m_MemberID, g_GameID, t_TimeKey)
select l_WinUser, l_Status, @MemberID, @GameID, @timekey)
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