[snip] mysql> set @a:=0; Query OK, 0 rows affected (0.00 sec) mysql> select @a:[EMAIL PROTECTED],mod(@a,2),ordr_ID, poft_Sub_Month from er_poft group by 3,4 having mod(@a,2) = 0 limit 5; +----------+-----------+---------+----------------+ | @a:[EMAIL PROTECTED] | mod(@a,2) | ordr_ID | poft_Sub_Month | +----------+-----------+---------+----------------+ | 2 | 0 | 4323 | 01 | | 4 | 0 | 4329 | 01 | | 6 | 0 | 4332 | 01 | | 8 | 0 | 4335 | 01 | | 10 | 0 | 4344 | 01 | +----------+-----------+---------+----------------+ 5 rows in set (0.00 sec) [/snip]
Now THIS is an elegant solution. The variable removes the need for an auto-increment field. I can see that the group by might interfere with the results if you are not careful, but using any unique identifier in the record should work out well. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
