Data type for NEWID() IN SQL SERVER 2008

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I want create a table which has a primary key column which column contain NEWID(). For this scenario which data type is better Varchr(36) or Char(36) for better performance.

please anybody help me with better suggestion.

Posted 3-Mar-13 19:45pm

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Shanalal Kasim · Answer 1 · 2013-03-03T20:06:00

hi,

NEWID() data type is "uniqueidentifier". Refer http://msdn.microsoft.com/en-us/library/ms190348.aspx[^]

Always going to be storing 36 characters, I would suggest you keep using CHAR. If you were storing data of varying length, go with VARCHAR.

Refer: http://stackoverflow.com/questions/5691212/sql-server-guid-to-varchar36-or-char36[^]