Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Optimize view

Posted on 2011-03-23
6
Medium Priority
?
523 Views
Last Modified: 2012-05-11
Hello,

Is it possible to optimize this view ?
CREATE VIEW [livelink].[WebNodes] AS SELECT a.OwnerID,a.DataID,a.ParentID, a.UserID,a.GroupID,
a.UPermissions,a.GPermissions,a.WPermissions,a.SPermissions,a.PermID, a.Name,a.DataType,a.SubType,
a.DComment,a.DCategory,a.CreateDate,a.ModifyDate,a.ExAtt1, a.Reserved,a.ReservedBy,a.ReservedDate,a.Ordering,
a.ChildCount,a.VersionNum, a.AssignedTo,a.Status,a.Priority,a.GIF,a.Catalog, b.FileName,b.FileType,b.DataSize,
b.ResSize,b.MimeType, c.Name OwnerName,a.OriginDataID, a.Major, a.Position FROM DTree
a LEFT OUTER JOIN DVersData b ON (a.DataID=b.DocID and (a.Major = b.Version
or (a.Major IS NULL and a.VersionNum=b.Version))), KUAF c WHERE a.CreatedBy=c.ID and b.VerType is NULL
GO


Thanks
bibi
0
Comment
Question by:bibi92
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
6 Comments
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35198461
It looks like intentionally or not you have a CROSS JOIN:
KUAF is not joined to anything.

If that is the case than use the correct syntax by losing the , and changing it to CROSS JOIN KUAF c
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35198498
See below for the same VIEW in a readable format and using the correct syntax:

Make sure the CROSS JOIN is required.
CREATE VIEW [livelink].[WebNodes]
AS
SELECT  a.OwnerID,
        a.DataID,
        a.ParentID,
        a.UserID,
        a.GroupID,
        a.UPermissions,
        a.GPermissions,
        a.WPermissions,
        a.SPermissions,
        a.PermID,
        a.Name,
        a.DataType,
        a.SubType,
        a.DComment,
        a.DCategory,
        a.CreateDate,
        a.ModifyDate,
        a.ExAtt1,
        a.Reserved,
        a.ReservedBy,
        a.ReservedDate,
        a.Ordering,
        a.ChildCount,
        a.VersionNum,
        a.AssignedTo,
        a.Status,
        a.Priority,
        a.GIF,
        a.Catalog,
        b.FileName,
        b.FileType,
        b.DataSize,
        b.ResSize,
        b.MimeType,
        c.Name OwnerName,
        a.OriginDataID,
        a.Major,
        a.Position
FROM    DTree a
        LEFT OUTER JOIN DVersData b ON a.DataID = b.DocID 
			    AND (a.Major = b.Version OR (a.Major IS NULL AND a.VersionNum = b.Version))
        CROSS JOIN KUAF c
WHERE   a.CreatedBy = c.ID
        AND b.VerType IS NULL

Open in new window

0
 
LVL 75

Accepted Solution

by:
Anthony Perkins earned 2000 total points
ID: 35198533
Oops my mistake I see where you are relating KUAF, but do it this way:
CREATE VIEW [livelink].[WebNodes]
AS
SELECT  a.OwnerID,
        a.DataID,
        a.ParentID,
        a.UserID,
        a.GroupID,
        a.UPermissions,
        a.GPermissions,
        a.WPermissions,
        a.SPermissions,
        a.PermID,
        a.Name,
        a.DataType,
        a.SubType,
        a.DComment,
        a.DCategory,
        a.CreateDate,
        a.ModifyDate,
        a.ExAtt1,
        a.Reserved,
        a.ReservedBy,
        a.ReservedDate,
        a.Ordering,
        a.ChildCount,
        a.VersionNum,
        a.AssignedTo,
        a.Status,
        a.Priority,
        a.GIF,
        a.Catalog,
        b.FileName,
        b.FileType,
        b.DataSize,
        b.ResSize,
        b.MimeType,
        c.Name OwnerName,
        a.OriginDataID,
        a.Major,
        a.Position
FROM    DTree a
        LEFT OUTER JOIN DVersData b ON a.DataID = b.DocID 
			    AND (a.Major = b.Version OR (a.Major IS NULL AND a.VersionNum = b.Version))
        INNER JOIN KUAF c ON a.CreatedBy = c.ID
WHERE   b.VerType IS NULL

Open in new window

0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 
LVL 40

Expert Comment

by:lcohan
ID: 35202443
Why not the INNER JOIN first?

CREATE VIEW [livelink].[WebNodes] AS
SELECT a.OwnerID,a.DataID,a.ParentID, a.UserID,a.GroupID, a.UPermissions,a.GPermissions,a.WPermissions,
            a.SPermissions,a.PermID, a.Name,a.DataType,a.SubType,a.DComment,a.DCategory,a.CreateDate,a.ModifyDate,
            a.ExAtt1, a.Reserved,a.ReservedBy,a.ReservedDate,a.Ordering, a.ChildCount,a.VersionNum, a.AssignedTo,
            a.[Status],a.Priority,a.GIF,a.[Catalog], b.[FileName],b.FileType,b.DataSize,b.ResSize,b.MimeType,
            c.Name OwnerName,a.OriginDataID, a.Major, a.Position
FROM DTree a
      INNER JOIN KUAF c ON a.CreatedBy=c.ID
      LEFT OUTER JOIN DVersData b ON (a.DataID=b.DocID and (a.Major = b.Version or (a.Major IS NULL and a.VersionNum=b.Version))) and b.VerType is NULL
GO
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 35203525
>>Why not the INNER JOIN first?<<
Because it does not make any difference in performance?
0
 

Author Closing Comment

by:bibi92
ID: 35205839
Thanks
0

Featured Post

Prepare for your VMware VCP6-DCV exam.

Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
Via a live example, show how to backup a database, simulate a failure backup the tail of the database transaction log and perform the restore.
Viewers will learn how to use the SELECT statement in SQL to return specific rows and columns, with various degrees of sorting and limits in place.

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question