Declan Basile

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Scott - I can't thank you enough. &nbsp;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. &nbsp;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. &nbsp;Thank you very much.
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In SQL Server 2012, why do I get the error &quot;The multi-part identifier &quot;T1.Text1&quot; could not be bound.&quot; when I run the following statement:<br />
<br />
UPDATE DBGUIds SET T1.Text1 = PT.Text1 FROM DBGUIds T1 INNER JOIN <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(SELECT InstanceId, EntityId, Text1 <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FROM<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(SELECT InstanceId, EntityId, FieldName, Value FROM TB WHERE TableName = 'DBGUIds') T3 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PIVOT <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MAX(Value) FOR FieldName IN (Text1)<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;) V) PT ON T1.int1 = PT.InstanceId<br />
<br />
<br />
Please note that the following statement works ...<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;SELECT T1.Text1, PT.Text1 FROM DBGUIds T1 INNER JOIN<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(SELECT InstanceId, EntityId, Text1 <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FROM<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(SELECT InstanceId, EntityId, FieldName, Value FROM TB WHERE TableName = 'DBGUIds') T3 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PIVOT <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MAX(Value) FOR FieldName IN (Text1)<br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;) V) PT ON T1.int1 = PT.InstanceId<br />
<br />
and outputs ...<br />
Text1 &nbsp;Text1<br />
Null &nbsp; &nbsp; 10<br />
Null &nbsp; &nbsp; 20
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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

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

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.