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Dynamic SQL
Message
De
26/05/2010 15:19:50
John Baird
Coatesville, Pennsylvanie, États-Unis
 
 
Information générale
Forum:
Microsoft SQL Server
Catégorie:
Scripting
Titre:
Versions des environnements
SQL Server:
SQL Server 2008
Application:
Desktop
Divers
Thread ID:
01466109
Message ID:
01466128
Vues:
63
>>I am attempting to display a count of the rows in a table called ContactUpdates in the AP Database. However, I am using a variable named @TableNameVar to contain the name of the table which I obtain by using a SQL statement sort of like a derived table, as in this: SET @TableNameVar = 'SELECT MIN(name) from sys.tables' , but it isn't quite working yet. This is for an exercise in my T-SQL class.
>>
>>
>USE AP
>
>DECLARE @DynamicSQL VARCHAR(max)
>DECLARE @TableNameVar sysname
>SELECT @TableNameVar = MIN(name) from sys.tables -- here we don't need dynamic SQL, we need to get the name of the table
>SET @DynamicSQL = 
>	'SELECT COUNT(*) AS [Countof' + (@TableNameVar) + '] FROM ' + quotename(@TableNameVar)
>--print (@DynamicSQL) -- we may want to use PRINT to debug the SQL
>EXEC (@DynamicSQL)
>>
>
>Cecil,
>
>See several fixes inline.
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