It’s easy to see. Try executing this:
USE tempdb;
GO
DROP TABLE IF EXISTS dbo.TomText;
GO
DROP TABLE IF EXISTS dbo.TomVarCharMax;
GO
CREATE TABLE dbo.TomText
(
TomTextID bigint identity(1,1) NOT NULL,
[Message] text NOT NULL
);
GO
CREATE TABLE dbo.TomVarCharMax
(
Hi folks
*Scenario:*
Multiple apps writing to a Log table in the same Sql Server database. Some
apps hitting the table A LOT. No app reads from this table. No updates
also. Just plain writes adding new rows.
*Problem:*
Contention causing timeout errors.
Can anybody explain why this could be
Logid bigint
Datetime
Type varchar
Message text
I don’t have the stats yet but some of the apps are services that run
batches of things and have busy periods during the day where they could
write maybe 10,000 thousand rows. Possibly several times per second maybe.
On Thu, 7 Mar 2019 at 11:44,
Very interesting about the storage of the text type. Do you have a
Microsoft link by any chance which says this?
Create script:
CREATE TABLE [dbo].[Log](
[LogID] [bigint] IDENTITY(1,1) NOT NULL,
[DateTime] [datetime] NOT NULL,
[Type] [varchar](30) NOT NULL,
[Message] [text] NULL,
CONSTRAINT
Hi Tom,
Can you post the table schema?
What rate are the writes coming in at?
Regards,
Greg
Dr Greg Low
1300SQLSQL (1300 775 775) office | +61 419201410 mobile│ +61 3 8676 4913 fax
SQL Down Under | Web:
Might get you to post the actual table schema though, so we can check it. Just
script the whole table, indexes, etc.
First comment is that you shouldn’t be using text at all. Apart from the fact
that it was deprecated back in 2005, the data for that is (by default) stored
out of row, not
Here’s a blog post:
https://blog.greglow.com/2019/02/26/sql-text-vs-varcharmax-in-row-vs-out-of-row-storage/
Regards,
Greg
Dr Greg Low
1300SQLSQL (1300 775 775) office | +61 419201410 mobile│ +61 3 8676 4913 fax
SQL Down Under | Web:
Fantastic! Thanks Greg
Regards,
Tom
On Thu, 7 Mar 2019 at 14:10, wrote:
> It’s easy to see. Try executing this:
>
>
>
> USE tempdb;
>
> GO
>
>
>
> DROP TABLE IF EXISTS dbo.TomText;
>
> GO
>
> DROP TABLE IF EXISTS dbo.TomVarCharMax;
>
> GO
>
>
>
> CREATE TABLE dbo.TomText
>
> (
>
>
