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TSQL seleziona nella tabella Temp da sql dinamico

Un esempio funzionante.

DECLARE @TableName AS VARCHAR(100)
SELECT @TableName = 'YourTableName'

EXECUTE ('SELECT * INTO #TEMP  FROM ' + @TableName +'; SELECT * FROM #TEMP;')

Seconda soluzione con tavolo temporaneo accessibile

DECLARE @TableName AS VARCHAR(100)
SELECT @TableName = 'YOUR_TABLE_NAME'

EXECUTE ('CREATE VIEW vTemp AS
        SELECT *
        FROM ' + @TableName)
SELECT * INTO #TEMP  FROM vTemp 

--DROP THE VIEW HERE      
DROP VIEW vTemp

/*START USING TEMP TABLE
************************/
--EX:
SELECT * FROM #TEMP


--DROP YOUR TEMP TABLE HERE
DROP TABLE #TEMP