Comments on: Displaying row number (rownum) in MySQL

By: Ashok sharma

Ashok sharma — Wed, 11 Jan 2012 13:22:20 +0000

I want to display a table of various datas including a column of s.no. which should be continuous even if removed any data from the table.
Can you please tell me or this code will work for that?

By: Code Example

Code Example — Sat, 24 Dec 2011 08:47:29 +0000

Smart solution!! Thanks Jim.

When I delete a row from a table then auto increment just missed the identity numbers. but this example save lots of time.

Your reply with the Tom’s message also very helpful.

go ahead..

By: Ed F

Ed F — Sat, 24 Dec 2011 02:29:41 +0000

@Jimmy – I was excited to find this solution while trying to convert a MSSQL query using row_number() to MYSQL. Your solution did not work at first because my query uses INNER JOINS, but your response to Jim Zak on Mar 2,’10 supplied the answer. I have no idea why it works, but it does. Guess it’s time to do some research.

THANKS – You have been a BIG help!

By: jimmy

jimmy — Fri, 14 Oct 2011 17:12:10 +0000

@Annete: do you mean crystal report?
I’m not really familiar with crystal report, if you can explain the error message in more detail maybe I can give you a hint

By: Annette Bithell

Annette Bithell — Tue, 11 Oct 2011 18:57:34 +0000

Hello,

I’m trying to use this for a crystal command. But getting an error saying incorrect syntax for version. This is my attempt….can you help??

Select @rownum:=@rownum+1 ‘ranknum’, cust_name, count(distinct callref) as rank from opencall,(SELECT @rownum:=0) where logdate like ‘%/08/2011%’
and companyname=”McDonald’s Nederland” group by cust_name order by rank desc

Thanks in advance
Annette

By: jimmy

jimmy — Thu, 25 Aug 2011 07:24:57 +0000

@Airforce:

I only notice the sql is wrong inn the FROM, the (SELECT @rownum:=0) r shouldn’t be joined. It should be :
FROM
(SELECT @rownum:=0) r,
contest as g
LEFT JOIN
vote as v
ON
g.id = v.contest_id

By: Airforce

Airforce — Tue, 23 Aug 2011 03:25:10 +0000

Hi everybody. I got a problem here. I want to output the number of ranking… but the code below here which top5 will take the same number from contest id. Hope you can help me.

SELECT
@rownum:=@rownum+1 top5
,g.id
,g.team
,v.image
,v.vote
FROM
contest as g
,(SELECT @rownum:=0) r
LEFT JOIN
vote as v
ON
g.id = v.contest_id
WHERE
g.ranking_id = {$ranking_id}
AND v.variation_no = 1
AND g.flg = 1
ORDER BY
v.vote DESC
LIMIT
5

By: sbeex

sbeex — Sun, 03 Jul 2011 07:30:46 +0000

Thank you men ! It works very good now ! I was looking for this problem since 2 hours but without you… i would need 1 day maybe ! Thank you !

By: DKATyler

DKATyler — Thu, 09 Jun 2011 18:53:21 +0000

Thanks!
Needed it to append commas to all rows except the last for something I was working on:

SELECT CONCAT(character,
IF(@rownum=rowqty.limit,”,’,')
)
FROM sandbox,
(SELECT @rownum:=0) r,
(SELECT COUNT(*) AS ‘limit’
FROM sandbox) as rowqty
WHERE @rownum:=@rownum+1;

By: jimmy

jimmy — Wed, 08 Jun 2011 15:26:51 +0000

@Justin:
It possible with this query (still a bit mess):

select @rownum:=@rownum+1 rank, IF(@score=p.score, @rownum2, @rownum2:=@rownum2+1) rank2, p.*, (@score:=p.score) dummy from player p, (SELECT @rownum:=0) x, (SELECT @rownum2:=0) c, (SELECT @score:=0) r order by score desc limit 10

rank2 will display the ranking you want (no increment on same score).

You should also need to check stored procedure solution which may more appropriate for this case.