At 4:35 PM -0500 9/10/01, Sheridan Saint-Michel wrote:
I ran into this and was hoping someone on this list can explain this
behavior to me.
Lets say I have the table table which has id and name, and five rows of
data.
I am using the query
select table.*,if(@count,@count:=@count+1,@count:=1) as count, from table;
What I get is id, name, and five rows of 1's under count.
Now If I do
set @count=NULL;
select table.*,if(@count,@count:=@count+1,@count:=1) as count, from table;
the count column has 1,2,3,4,5
When I do select @count immediately upon opening MySQL it returns NULL.
So why do I get the expected result when I do set @count=NULL; but an entire
column of 1's when I don't... even though @count returns NULL?
This _is_ odd. Dunno. But there's a simpler way to do this:
set @count=0;
select table.*, @count:=@count+1 AS count from table;
Sheridan Saint-Michel
Website Administrator
FoxJet, an ITW Company
www.foxjet.com
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Paul DuBois, [EMAIL PROTECTED]
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