Groups > comp.databases.ms-sqlserver > #2261

Re: No covering indices for table types?

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From	Anton Shepelev <anton.txt@g{oogle}mail.com>
Newsgroups	comp.databases.ms-sqlserver
Subject	Re: No covering indices for table types?
Date	Mon, 15 Jul 2024 14:27:08 +0300
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Erland Sommarskog to Anton Shepelev:

> > For efficient querying and joining, I need a covering
> > index on the [moment] field that includes [value], but
> > the INCLUDE keyword does not seem to be suported:
>
> Starting with SQL 2019, it is:
>
> CREATE TYPE series_t AS TABLE
>   (  moment DATETIME NOT NULL,
>      value  FLOAT,
>      INDEX Main(moment)
>      INCLUDE (value)
>   )

Glad to know MSSQL is improving, although I am using an
older version.

> If you are an older version, I would suggest adding value
> as an index key is the best in most situations.

Indeed.  That's that I did.

> I will submit an edit to the CREATE TYPE topic.

Thank you.  I myself have fixed a few of their documentation
articles about .NET, including those describing the
connection-string syntax.  How strange that Microsoft has
decidied to let the community wrote their documentation...

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No covering indices for table types? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-07-12 15:15 +0300
  Re: No covering indices for table types? Erland Sommarskog <esquel@sommarskog.se> - 2024-07-12 23:48 +0200
    Re: No covering indices for table types? Anton Shepelev <anton.txt@g{oogle}mail.com> - 2024-07-15 14:27 +0300

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