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   comp.databases.ms-sqlserver      Notorious Rube Goldberg contraption      19,505 messages   

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   Message 19,192 of 19,505   
   Erland Sommarskog to rja.carnegie@gmail.com   
   Re: Best Practices for Wide Columns in T   
   07 May 15 21:29:32   
   
   From: esquel@sommarskog.se   
      
    (rja.carnegie@gmail.com) writes:   
   > As of SQL Server 2005 (about to be retired, and maybe   
   > me with it), you can declare varchar(max) which -   
   > typically? - is stored in a separate page (LOB_DATA) but   
   > usually can be treated just like varchar(9) in your SQL   
   > statements - likewise nvarchar, varbinary - or formats   
   > like varchar(999) which are stored either IN_ROW_DATA   
   > if it'll fit, or ROW_OVERFLOW_DATA if not.   
      
   By default, the MAX data types are stored on the data page, as long   
   as they are < 8000 bytes. There is a table option to change this.   
      
   > I think there /used/ to be an option to hold short   
   > values of an unlimited-length column as IN_ROW_DATA -   
   > maybe that was for [text] and [ntext] types?   
      
   For text/ntext/image, the default is to store out of row, but there is   
   an option to change this as well.   
      
      
      
      
   --   
   Erland Sommarskog, Stockholm, esquel@sommarskog.se   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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