Home Forums SQL Server 2012 SQL Server 2012 - T-SQL How to get up to 5 hierarchy levels of data from original (parent) to derived (children) product table. RE: How to get up to 5 hierarchy levels of data from original (parent) to derived (children) product table.

  • January 4, 2018 at 5:51 am

    #1974428

    aaron.reese - Thursday, January 4, 2018 4:26 AM

    Google for Recursive CTE - basically a CTE that references itself.  You can set a level 0 in the CTE and then a derived level as the derived level of the parent +1

    If you want to present the hierarchy as a single row you will need to use STUFF..FOR XML and PIVOT()

    Have a go at some code and post back if you get stuck.

    This is confusing - he's posted a recursive CTE as his sample code.

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