Viewing 15 posts - 7,321 through 7,335 (of 7,598 total)
Dev (7/9/2012)‘select only a very small % of the total rows’ is applicable to Clustered Index as well for seek operation else it will scan the cluster.
False, of course. ...
July 9, 2012 at 10:04 am
Dev (7/8/2012)
July 9, 2012 at 9:20 am
I suggest avoiding "WEEK" or anything that could or does rely on SQL settings such as @@DATEFIRST (I don't think WEEK actually does, but I think it does always use...
July 6, 2012 at 1:09 pm
case
when degree1id = "@Degree" then (select d.Name from AcademicExperienceTypes d where p.Degree1id=d.Id)
when degree2id = @Degree then (select d.Name from AcademicExperienceTypes d where p.Degree2id=d.Id)
when degree3id = @Degree then (select...
July 6, 2012 at 12:34 pm
case
when degree1id = "@Degree" then (select d.Name from AcademicExperienceTypes d where p.Degree1id=d.Id)
when degree2id = @Degree then (select d.Name from AcademicExperienceTypes d where p.Degree2id=d.Id)
when degree3id = @Degree then (select...
July 6, 2012 at 12:29 pm
The most important performance aspect of a table is determining the correct clustered index.
Absolutely, and what I want is one that is narrow - doesn't make nonclustered indexes larger than...
July 6, 2012 at 12:16 pm
GilaMonster (7/6/2012)
There's only one clustered index, multiple nonclustered indexes, clustered index to organise the table, nonclusters to support the queries.
Every column added to a query invalidates the existing covering index...
July 6, 2012 at 10:49 am
An integer column defined as identity (a very good and popular choice for clustered index) is 4 bytes.
It's certainly popular, but most often not good. The no-thought identity as...
July 6, 2012 at 8:40 am
CELKO (7/1/2012)[/bCode should be in Standard SQL as much as possible and not local dialect.
Given that this a SQL Server forum, SQL server dialect is fine. In particular,...
July 5, 2012 at 4:26 pm
Lynn Pettis (7/3/2012)
ScottPletcher (7/3/2012)
Also you have 2 very big indexes.One has 10 columns and other has 9 columns .Table just has 12 columns.
It's a pretty sure bet you have the...
July 3, 2012 at 3:45 pm
Also you have 2 very big indexes.One has 10 columns and other has 9 columns .Table just has 12 columns.
It's a pretty sure bet you have the wrong clustered index....
July 3, 2012 at 1:56 pm
Lynn Pettis (7/3/2012)
alter table MyTable
Add Constraint [MyPrimaryKey] Primary Key (MyColumn)
WITH (FILLFACTOR = 75, ONLINE = ON, PAD_INDEX = ON);
Be sure to verify the complete syntax in...
July 3, 2012 at 1:49 pm
During the load in the where clause there is a selection (or join) on the logical key and the row must be actual (Y).
If the logical key nonclus index needs...
June 28, 2012 at 10:25 am
Also, do a
DBCC UPDATEUSAGE
on the table. Heaps seem to report ridiculously incorrect page totals too often for comfort. I've had SQL telling me that a single...
June 28, 2012 at 9:53 am
CELKO (6/27/2012)
ScottPletcher (6/27/2012)
Regarding date formatting, I'd suggest using 'YYYYMMDD', which is foolproof on SQL Server, rather than 'YYYY-MM-DD', which can fail depending on specific settings in SQL Server.
NO! That is...
June 27, 2012 at 4:11 pm
Viewing 15 posts - 7,321 through 7,335 (of 7,598 total)