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dynamic field name

Posted on 2002-03-17
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Last Modified: 2008-02-20
hi experts,

i heve the following code:

declare cursor_me cursor for select a_fielname from a_table
open cursor_me
fetch next from cursor_me into @my_var1

is there a way that based of some logic, it will tell me which field in the table that i should select?

i try to do the following but it did not give me the correct value

declare cursor_me cursor for select @my_var2 a_table
open cursor_me
fetch next from cursor_me into @my_var1

please help me out. thanks in advance!

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Question by:megatshamsul
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5 Comments
 
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Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 6876283
unless you can avoid the cursor, you must put everything into dynamic SQL...

CHeers
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Author Comment

by:megatshamsul
ID: 6878814
how?

some example may be.. thanks!
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LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 50 total points
ID: 6879334
cursor in dynamic SQL:

declare @sql nvarchar(1000)
declare @myvar varchar(100)

set @sql = N'declare cursor_me cursor for select cast(' + @my_var2 + 'as varchar(100)) from a_table
open cursor_me
fetch next from cursor_me into @my_var1
close cursor_me
deallocate cursor_me'

exec sp_executesql @sql, N'@my_var1 varchar(100) OUTPUT', @myvar OUTPUT

select @myvar

Cheers
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Expert Comment

by:CleanupPing
ID: 9280760
megatshamsul:
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