online dating techniques men - Why is avg not updating

The script below will create a data file, create a 10MB ‘filler’ table at the start of the data file, create a 10MB ‘production’ clustered index, and then analyze the fragmentation of the new clustered index.

USE [master]; GO IF DATABASEPROPERTYEX (N'DBMaint2008', N'Version') IS NOT NULL DROP DATABASE [DBMaint2008]; GO CREATE DATABASE DBMaint2008; GO USE [DBMaint2008]; GO SET NOCOUNT ON; GO -- Create the 10MB filler table at the 'front' of the data file CREATE TABLE [Filler Table] ( [c1] INT IDENTITY, [c2] CHAR (8000) DEFAULT 'filler'); GO -- Fill up the filler table INSERT INTO [Filler Table] DEFAULT VALUES; GO 1280 -- Create the production table, which will be 'after' the filler table in the data file CREATE TABLE [Prod Table] ( [c1] INT IDENTITY, [c2] CHAR (8000) DEFAULT 'production'); CREATE CLUSTERED INDEX [prod_cl] ON [Prod Table] ([c1]); GO INSERT INTO [Prod Table] DEFAULT VALUES; GO 1280 -- Check the fragmentation of the production table SELECT [avg_fragmentation_in_percent] FROM sys.dm_db_index_physical_stats ( DB_ID (N'DBMaint2008'), OBJECT_ID (N'Prod Table'), 1, NULL, 'LIMITED'); GO The logical fragmentation of the clustered index before the shrink is a near-perfect 0.4%.

In the case above, it completely reversed the order of the clustered index, taking it from perfectly defragmented to perfectly fragmented.

why is avg not updating-15

.) One of my biggest hot-buttons is around shrinking data files.

Although I used to own the shrink code while I was at Microsoft, I didn’t write it (so don’t blame me!

I tried to have it removed from the product for SQL 2005 and SQL 2008 when I was in a position to do so – the only reason it’s still there is for backwards compatibility.

Don’t fall into the trap of having a maintenance plan that rebuilds all indexes and then tries to reclaim the space required to rebuild the indexes by running a shrink – that’s a zero-sum game where all you do is generate a log of transaction log for no actual gain. For instance, if you’ve deleted a large proportion of a very large database and the database isn’t likely to grow, or you need to empty a file before removing it?

And what's more, Google will actually reward you for doing it!

In this Whiteboard Friday, Rand explores the how and why of republishing, helping you set goals for yourself and your content.

Do you use that to your advantage when it comes to your site's content?

Whether you're riding the wave of a successful post or improving what you've done before, republishing is something that should be on your mind and your to-do list.

I’m talking about actually running the shrink algorithm.

Shrinking of data files should be performed even more rarely, if at all.

Now, will that have any effect on your workload performance? A data file shrink operation works on a single file at a time, and uses the GAM bitmaps (see Inside The Storage Engine: GAM, SGAM, PFS and other allocation maps) to find the highest page allocated in the file.

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