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EXEC Syntax Error

Author

Topic

yellowman
Starting Member

25 Posts

Posted - 2012-11-28 : 16:11:38

Anyone know where I am going wrong here:


EXEC('IF EXEC sp_executesql N''' +@command+ ' =  '' '' '' PRINT ''' +@DB_Name+ '''')

The error says the following
Incorrect syntax near the keyword 'EXEC'.
Msg 170, Level 15, State 1, Line 2
Line 2: Incorrect syntax near ' '.

Thanks

Elizabeth B. Darcy
Starting Member

39 Posts

Posted - 2012-11-28 : 17:49:56

Looks like you have couple of extra spaces. Try if this works?

EXEC('IF EXEC sp_executesql N''' +@command+ ' =  '''''' PRINT ''' +@DB_Name+ '''')

________________________________________
-- Yes, I am indeed a fictional character.

madhivanan
Premature Yak Congratulator

22864 Posts

Posted - 2012-11-29 : 02:47:54

What are you trying to do with that code? You can't use IF on EXEC

Madhivanan

Failing to plan is Planning to fail

yellowman
Starting Member

25 Posts

Posted - 2012-11-29 : 08:52:35

Your right, using IF in that statement above doesn't work. I know what I want, I just don't know how to get there.

@command is a SELECT statement that either outputs a number or returns and empty set. If @command returns an empty set, I want to output the database name (@DB_Name).

I tried to eliminate the IF statement (below), but that didn't work either.


SELECT @command = 'USE ' +@DB_Name+ ' 
                   SELECT * FROM ' 
                   +@DB_Name + '.CQ_DBO.schema_version'
  

EXEC('sp_executesql N''''' +@command+ ' ISNULL PRINT ''' +@DB_Name+ '''''''')

nigelrivett
Master Smack Fu Yak Hacker

3385 Posts

Posted - 2012-11-29 : 10:43:49

declare @t table (format for return from select statement)
select @command = 'SELECT * FROM ' + @DB_Name + '.CQ_DBO.schema_version'

insert @t
exec (@command)

if not exists (select * from @t)
PRINT @DB_Name

==========================================
Cursors are useful if you don't know sql.
SSIS can be used in a similar way.
Beer is not cold and it isn't fizzy.

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