set @i=0;
set @precprest='';
select cmd.no_client,cmd.no_cmd,cmd.no_prest,eye.libelle,hair.libelle,
@precprest as b,if(@i=0,0,@precprest:=cmd.no_prest),@i:=@i+1
It s like if the if was evaluate one time.
To: [EMAIL PROTECTED]
Sent: Saturday, December 15, 2001 10:16 PM
Subject: Re: how to make a reference to previous row into a sql statement
set @precprest='';
select cmd.no_client,cmd.no_cmd,
@i:=@i+1,@precprest:=cmd.no_prest as b, if(@i1,0,1)
from
I can make a variable depending on the row because
@i:=@i+1 dispaly 1,2,3
but if(@i1,0,1) is always 1 the value at the end of the thread.
Can make an something to memorize the previous value of a column ?
- Original Message -
From: David Yahoo [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, December 15, 2001 9:42 PM
Subject: how to make a reference to previous row into a sql statement
Hi,
I know that mysql can reference var into sql statement, I think like
@var, i cant retrieve this info.
.
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