現在、あるテーブルから別のテーブルにコンテンツをコピーするストアドプロシージャがあります。
ただし、27行のみを挿入しようとすると、12分以上継続します(その後停止しました)。27行に4回影響があると表示されましたが、変更は行われませんでした。
次のSPが遅くなる理由を見つけられますか?
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER Procedure [dbo].[sp_CopyCompanyContent]
(
@intCopyFromCompanyID Int,
@intNewCompanyID Int
)
As
Begin
/*
RaisError If any of Odl/New Company ID's are 0
*/
If (@intCopyFromCompanyID = 0 Or @intNewCompanyID = 0)
Begin
RaisError('New Company ID or Old Company ID can not be 0', 16, 1)
Return
End
/*
Create Temp Table For the Content Sections
*/
If Object_ID('tempdb..#ContentSections') IS Not Null
Begin
Drop Table dbo.#ContentSections
End
/*
Have to get all the existing data for the Old company we are copying from.
Have to also add the Max(ContentSectionID) From ContentSection. Max(ContentSectionID) +
The Identity (Added further down due to laziness) will be our seed for the ContentID
*/
Select CS.ContentID,
CS.SectionID,
CS.MenuOrder,
@intNewCompanyID NewCompanyID,
CS.CompanyID OldCompanyID,
CS.SubMenu,
CS.Link,
CS.HeaderMenu,
CS.ParentContentID,
CRS.*
Into dbo.#ContentSections
From dbo.Company COMP
Join dbo.ContentSection CS
On COMP.Company_id = CS.CompanyID
Join dbo.Content CONT
On CONT.ContentID = CS.ContentID
Cross Join (
Select MAx(ContentSectionID) MaxContentSectionID
From dbo.ContentSection CONT
) crs
Where COMP.Company_id = @intCopyFromCompanyID
Order By COMP.Company_id
/*
We now need to create a table for the existing content for the old company.
Also have to create the seed. Same principle as above.
*/
If Object_ID('tempdb..#Content') IS Not Null
Begin
Drop Table dbo.#Content
End
Select CONT.*,
CRS.*
Into dbo.#Content
From dbo.Company COMP
Join dbo.ContentSection CS
On COMP.Company_id = CS.CompanyID
Join dbo.Content CONT
On CONT.ContentID = CS.ContentID
Cross Join (
Select MAx(ContentID) MaxContentID
From dbo.Content CONT
) crs
Where COMP.Company_id = @intCopyFromCompanyID
Order By COMP.Company_id
/*
Add Identity to each of the tables we have created above. The ID fields will add to
the Max of each table to mimic what the future seeds will be.
*/
exec('Alter table #ContentSections Add ID Int Identity(1,1)')
exec('Alter table #Content Add ID Int Identity(1,1)')
/*
Add content data from the temp table.
*/
Insert Into dbo.Content
(
Title,
Content
)
Select Title,
Content
From dbo.#Content
/*
Have to the Content table up to the content sections table
as this contains what ID has been add to the Content Table.
*/
Insert Into dbo.ContentSection
(
ContentID,
SectionID,
MenuOrder,
CompanyID,
SubMenu,
Link,
HeaderMenu,
ParentContentID
)
Select C.MaxContentID + C.ID,
CS.SectionID,
CS.MenuOrder,
CS.NewCompanyID,
CS.Submenu,
CS.Link,
CS.HEaderMEnu,
CS.ParentContentID
From dbo.#Content C
Join dbo.#ContentSections CS
On C.ID = CS.ID
End