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I would like to remind that SQL Server 2012 is not supported on WSS 3.0/MOSS 2007.
Basicaly, The supportability of products is normally the minimum requirement + 2 versions, unless exceptions. So in this case, the minimum requirement is SQL Server 2000 and the next two versions are SQL Server 2005 and SQL Server 2008/R2.
Furthermore, If you want to use it on SharePoint 2010 SP1 you have to be installed at least on the SP1, as you can check on the following url:
Héctor Calvarro Martín. SharePoint Dev/Core. Microsoft Support Escalation Engineer for EMEA
Thanks Hector for the clarification!
Can we upgrade our SQL Server to 2012 but run the MOSS/SharePoint database in 2008 (100) Compatibility mode?