Category: Storage Wednesday

• Hey, where is my BLOB?

  

  2014-08-13 - General, Series, SQL Server Internals, Storage Wednesday

  LOB values are not always stored in the special LOB_DATA allocation unit. But, where else could they be? Discover the well-kept secret of the Inline LOB.

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• How to Overflow a BLOB Value

  

  2014-08-06 - General, Series, SQL Server Internals, Storage Wednesday

  It is advertised as 2 GB, but what is actually the largest number of bytes that can be stored in a SQL Server BLOB value? Read on to find out now.

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• Page Type 4 – The Mysterious TEXT_TREE_PAGE

  

  2014-07-30 - General, Series, SQL Server Internals, Storage Wednesday

  What purpose have pages of type TEXT_TREE_PAGE? Discover how SQL Server uses these pages to build positional B+Tree indexes on large LOB values.

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• Page Type 3 – LOB Data Pages explained

  

  2014-07-23 - General, Series, SQL Server Internals, Storage Wednesday

  LOB data values in SQL Server are stored in separate allocation units in pages of type TEXT_MIX_PAGE. Read on and discover when these pages are used and how you can find out if your tables contain any pages of that type.

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• Partition Boundaries – Left or Right: That is the Question

  

  2014-07-16 - Fundamentals, General, Series, SQL Server Internals, Storage Wednesday

  Do you know the difference between a RANGE LEFT and a RANGE RIGHT partition function? Read on and discover a unique query to determine the actual partition a row is stored in. With this query you can quickly confirm your RANGE-assumption or find out where you got it wrong.

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