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COMPRESS and DECOMPRESS T-SQL Enhancement in SQL Server 2016

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SQL Server 2016 introduces two new system functions namely COMPRESS and DECOMPRESS.

This is Part 7 of 10 Part T-SQL Enhancements in SQL Server 2016 for Developers and DBAs. Click here to read it from the beginning….

COMPRESS Function: This function can be used to compress the input values using GZIP algorithm and the output will be of BYTE array of type VARBNARY(MAX).

DECOMPRESS Function: This function can be used to decompress the input value BYTE array using GZIP algorithm and it will return the BYTE array of type VARBINARY(MAX). To retrieve the actual value one would need to explicitly CAST result to a target type.

Example COMPRESS and DECOMPRESS function of SQL Server 2016

          'MyTechMantra' AS [Input Value To Compress]
          ,COMPRESS('SearchSQLServer') AS [Compressed Value]
          ,DECOMPRESS(COMPRESS('MyTechMantra')) AS [Decompressed Value]
          ,CAST(DECOMPRESS (COMPRESS ('MyTechMantra')) AS VARCHAR(MAX))AS [Derive Actual Input Value]

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Ashish Mehta

Ashish Kumar Mehta is a database manager, trainer and technical author. He has more than a decade of IT experience in database administration, performance tuning, database development and technical training on Microsoft SQL Server from SQL Server 2000 to SQL Server 2014. Ashish has authored more than 325 technical articles on SQL Server across leading SQL Server technology portals. Over the last few years, he has also developed and delivered many successful projects in database infrastructure; data warehouse and business intelligence; database migration; and upgrade projects for companies such as Hewlett-Packard, Microsoft, Cognizant and Centrica PLC, UK. He holds an engineering degree in computer science and industry standard certifications from Microsoft including MCITP Database Administrator 2005/2008, MCDBA SQL Server 2000 and MCTS .NET Framework 2.0 Web Applications.

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