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This looks to me like a problem with connection. Are you able to query a simple select using the datasource?
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This looks to me like a problem with connection. Are you able to query a simple select using the datasource?

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i got the answer i have some columns with the same name<br />
<br />
thanks
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i got the answer i have some columns with the same name

thanks

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could not create a list of fields for the query verify that you can connect to the data source and your query syntax is correct.<br />
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AFTER CLICKING DETAILS BUTTON FOLLOWING IS DISPLAYED<br />
&nbsp;An item with same key has already been added
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could not create a list of fields for the query verify that you can connect to the data source and your query syntax is correct.

AFTER CLICKING DETAILS BUTTON FOLLOWING IS DISPLAYED
 An item with same key has already been added

ssrs  data field error

Microsoft SQL Server 2008 is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning. Major improvements include the  Always On technologies and support for unstructured data types.

Microsoft SQL Server 2008

SQL Server Reporting Services (SSRS) is a server-based report generation software system from Microsoft. It can prepare and deliver a variety of interactive and printed reports and is administered via a web interface or its web service. Its web services interface also supports the development of custom reporting applications. Finally, SSRS can also be integrated with SharePoint. SSRS competes with other business intelligence tools, most prominently Crystal Reports.