asked on

Error running an update statement with a pivot table in SQL Server

In SQL Server 2012, why do I get the error "The multi-part identifier "T1.Text1" could not be bound." when I run the following statement:

UPDATE DBGUIds SET T1.Text1 = PT.Text1 FROM DBGUIds T1 INNER JOIN
      (SELECT InstanceId, EntityId, Text1
      FROM
      (SELECT InstanceId, EntityId, FieldName, Value FROM TB WHERE TableName = 'DBGUIds') T3
      PIVOT
      (
            MAX(Value) FOR FieldName IN (Text1)
      ) V) PT ON T1.int1 = PT.InstanceId

Please note that the following statement works ...
      SELECT T1.Text1, PT.Text1 FROM DBGUIds T1 INNER JOIN
      (SELECT InstanceId, EntityId, Text1
      FROM
      (SELECT InstanceId, EntityId, FieldName, Value FROM TB WHERE TableName = 'DBGUIds') T3
      PIVOT
      (
            MAX(Value) FOR FieldName IN (Text1)
      ) V) PT ON T1.int1 = PT.InstanceId

and outputs ...
Text1 Text1
Null 10
Null 20

ASKER CERTIFIED SOLUTION

Scott Pletcher

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Declan Basile

ASKER

Scott - I can't thank you enough. I was searching all over the internet, experimenting, and trying to isolate the problem as best I can for hours before you posted the solution. I was worried that the problem was that SQL Server wouldn't allow an update from a pivot table and am glad that's not the case. Thank you very much.