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POSQL Server 2005 Table Variable Update Problem
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  1. POSQL Server 2005 Table Variable Update Problem
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    copied!<p>I have been reading about the differences between Table Variables and Temp Tables and stumbled upon the following issue with the Table Variable. I did not see this issue mentioned in the articles I pursued. </p> <p>I pass in a series of PKs via a XML data type and successfully create the records in both temp table structures. When I attempt to update further fields in the temp tables the Table Variable fails but the Temp Table has no problem with the Update Statement. What do need to do different? I would like to take advantage of the speed boost that Table Variables promise…</p> <p>Here are the SP snippets and Results:</p> <pre><code>CREATE PROCEDURE ExpenseReport_AssignApprover ( @ExpenseReportIDs XML ) AS DECLARE @ERTableVariable TABLE ( ExpenseReportID INT, ExpenseReportProjectID INT, ApproverID INT) CREATE TABLE #ERTempTable ( ExpenseReportID INT, ExpenseReportProjectID INT, ApproverID INT ) INSERT INTO @ERTableVariable (ExpenseReportID) SELECT ParamValues.ID.value('.','VARCHAR(20)') FROM @ExpenseReportIDs.nodes('/Root/ExpenseReportID') as ParamValues(ID) INSERT INTO #ERTempTable (ExpenseReportID) SELECT ParamValues.ID.value('.','VARCHAR(20)') FROM @ExpenseReportIDs.nodes('/Root/ExpenseReportID') as ParamValues(ID) UPDATE #ERTempTable SET ExpenseReportProjectID = ( SELECT TOP 1 ExpenseReportProjectID FROM ExpenseReportItem WHERE(ExpenseReportID = #ERTempTable.ExpenseReportID)) UPDATE @ERTableVariable SET ExpenseReportProjectID = ( SELECT TOP 1 ExpenseReportProjectID FROM ExpenseReportItem WHERE(ExpenseReportID = @ERTableVariable.ExpenseReportID)) </code></pre> <p>Error when last update statement in there : Must declare the scalar variable "@ERTableVariable".</p> <p>ExpenseReportProjectID is updated in #ERTempTable when the last update is commented out:</p>
 

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