Bill,
if you use an order by clause in your query, the limit will pick the first
100K rows in that order. That way you can ensure that all rows will be
processed in (wait for it...) order :)
Cheers,
Walter
On Tue, Aug 18, 2009 at 18:44, Bill Arbuckle b...@arbucklellc.com wrote:
I am in need
...@gmail.com] On Behalf Of Walter
Heck - OlinData.com
Sent: Tuesday, August 18, 2009 9:51 AM
To: b...@arbucklellc.com
Cc: mysql@lists.mysql.com
Subject: Re: Query Question
Bill,
if you use an order by clause in your query, the limit will pick the first
100K rows in that order. That way you can
To further emphasize this point: A table has no order by itself,
That's not entirely true ;-) Records are stored in some kind of physical
order, some DBMSses implement clustered keys, meaning that the
records are stored ascending order on disk.
However...
and you should make no
It may be true that some DBMSs physically store rows in whatever order you
speicfy; however, this is a MySQL list, and MySQL does not do this (InnoDB
anyway).
For example, take a table with 10,000,000 rows and run a simple select on
it:
Database changed
mysql SELECT id FROM trans_item LIMIT 1\G
It may be true that some DBMSs physically store rows in whatever order
you
speicfy;
That's not what I said.
however, this is a MySQL list, and MySQL does not do this (InnoDB
anyway).
For example, take a table with 10,000,000 rows and run a simple select on
it:
Database changed
mysql
It sounds to me like you want to join the two tables?
http://dev.mysql.com/doc/refman/5.1/en/join.html
On Mon, Jun 15, 2009 at 03:56, brucebedoug...@earthlink.net wrote:
hi.
i've got a situation, where i'm trying to figure out how to select an item
from tblA that may/maynot be in tblB.
if
Hi Bruce,
bruce wrote:
hi.
i've got a situation, where i'm trying to figure out how to select an item
from tblA that may/maynot be in tblB.
if the item is only in tblA, i can easilty get a list of the items
select * from tblA
if the item is in tblA but not linked to tblB, i can get the
Hi Richard,
Richard Reina wrote:
I have a database table paycheck like this.
empno, date, gross, fed_with
1234 2007-09-01 1153.85 108.26
1323 2007-09-01 461.54 83.08
1289 2007-09-01 1153.85 94.41
1234 2007-09-15 1153.85 108.26
1323 2007-09-15 491.94 87.18
1289
you need to group the result sets by date, look at the manual link below:
http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html
Richard Reina wrote:
I have a database table paycheck like this.
empno, date, gross, fed_with
1234 2007-09-01 1153.85 108.26
1323 2007-09-01
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 30, 2007 1:55 AM
To: Andrey Dmitriev
Cc: mysql@lists.mysql.com
Subject: Re: query question
Thanks.. It doesn't seem to work though.. I did verify I am on 5.0
Try lose the space after group_concat.
PB
Andrey Dmitriev wrote:
Thanks
I knew I’ve seen this error before ☺
Thanks a lot.
-andrey
From: Peter Brawley [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 30, 2007 1:55 AM
To: Andrey Dmitriev
Cc: mysql@lists.mysql.com
Subject: Re: query question
Thanks.. It doesn't seem to work
Hi,
Andrey Dmitriev wrote:
This is kind of achievable in Oracle in either sqlplus mode, or with the
use of analytical functions. Or in the worst case by writing a function.
But basically I have a few tables
Services, Hosts, service_names
And I can have a query something like
select
To: Andrey Dmitriev
Cc: mysql@lists.mysql.com
Subject: Re: query question
Hi,
Andrey Dmitriev wrote:
This is kind of achievable in Oracle in either sqlplus mode, or with
the
use of analytical functions. Or in the worst case by writing a
function.
But basically I have a few tables
Services
mysql.group_concat does not exist
-Original Message-
From: Baron Schwartz [mailto:[EMAIL PROTECTED]
Sent: Monday, October 29, 2007 4:00 PM
To: Andrey Dmitriev
Cc: mysql@lists.mysql.com
Subject: Re: query question
Hi,
Andrey Dmitriev wrote:
This is kind of achievable in Oracle in either
Can you post your table definitions and some sample data.
Also what is the end requirement - how should the end result look like?
Anoop
On 4/23/07, Clyde Lewis [EMAIL PROTECTED] wrote:
Guys,
I have the following table that contains some information about a
cars. I'm trying to write a query
Hi Aaron,
Aaron Clausen wrote:
I have a couple of very simple tables to handle a client signin site:
The client table has the following fields:
client_id int(11) primary key auto_increment
first_name char(90)
last_name char(90)
The signin table has the following fields
record_id int
Behrang Saeedzadeh wrote:
Hi,
Suppose that there are two tables book and author:
book
id
title
author_id
author
-
od
title
I want a query that returns all the books, but if there are more than
3 books with the same author_id, only 3 should be returned. For
example if this is
Hi Behrang,
Behrang Saeedzadeh wrote:
Hi Baron,
Thanks. That that worked great. Is it possible to insert an empty row
after the books by the same author?
-Behi
On 4/12/07, Baron Schwartz [EMAIL PROTECTED] wrote:
Behrang Saeedzadeh wrote:
Hi,
Suppose that there are two tables book and
Hi Baron,
Please remember to reply to the list so others can read and benefit from
answers to
your questions. Also, though I don't care tremendously one way or another,
many people
think it's good form to place your response after the message instead of before
(I tend
to follow the pattern
Try this on for size:
SELECT DISTINCT id FROM tbl
WHERE id NOT IN (SELECT id FROM tbl WHERE action = 1)
The subselect will only work in 4.1 and later I think.
Dan
On 12/8/06, bruce [EMAIL PROTECTED] wrote:
hi...
i'm looking at what is probably a basic question.
i have a tbl with
-id
bruce wrote:
hi...
i'm looking at what is probably a basic question.
i have a tbl with
-id
-action
-status
-date
ie:
id action statusdate
1 0 1
1 1 2
1 2 3
-
2
Ysgrifennodd bruce:
hi...
i'm looking at what is probably a basic question.
i have a tbl with
-id
-action
-status
-date
ie:
id action statusdate
1 0 1
1 1 2
1 2 3
-
.
i've tried to do a 'limit' and group, but i'm missing some thing...
thanks
-bruce
-Original Message-
From: Peter Bradley [mailto:[EMAIL PROTECTED]
Sent: Friday, December 08, 2006 12:26 PM
To: [EMAIL PROTECTED]
Cc: mysql@lists.mysql.com
Subject: Re: query question...
Ysgrifennodd bruce
-bruce
-Original Message-
From: Peter Bradley [mailto:[EMAIL PROTECTED]
Sent: Friday, December 08, 2006 12:26 PM
To: [EMAIL PROTECTED]
Cc: mysql@lists.mysql.com
Subject: Re: query question...
Ysgrifennodd bruce:
hi...
i'm looking at what is probably a basic question.
i have a tbl
Ysgrifennodd bruce:
hi peter.
thanks, the solution you gave me is close...!!
snip
what i really want to get is:
+--+
| universityID |
+--+
|2 |
|3 |
+--+
which would be the unique 'id's.
i've tried to do a 'limit' and group, but
dan...
thanks!!! like a charm.. now for the other 200 queries i'm dealing with!!
-Original Message-
From: Dan Buettner [mailto:[EMAIL PROTECTED]
Sent: Friday, December 08, 2006 1:40 PM
To: [EMAIL PROTECTED]
Cc: Peter Bradley; mysql@lists.mysql.com
Subject: Re: RE: query question
Dan, your suggestion is *exactly* what I needed!
Furthermore, because of the use of the subquery, there is no need to
join to table to itself, so the query may be simplified to:
mysql SELECT distinct loc1.imageId
- FROM locBridgeImageLocLevel5 as loc1
- WHERE loc1.locLevel5Id =
Erick, maybe I'm missing something or you mistyped, but you appear to
be saying this:
you want 2356 and not 13128
but your last SQL query is excluding only 18302. 13128 is not
mentioned in the query.
Try re-running the query with 13128 instead of 18302 ?
Dan
On 10/17/06, Erick Carballo
Dan, thanks for your prompt response. You are correct: I mistyped.
However, if I ran the query as you suggest, I obtain the same results:
mysql SELECT distinct loc1.imageId
- FROM locBridgeImageLocLevel5 as loc1
- INNER JOIN
- locBridgeImageLocLevel5 as loc2 USING (imageId)
I see what's happening, Erick.
It's matching all the rows in loc1 and loc2 with the same image id.
It *is* excluding 13128, but image id 1 is still appearing because of
the rows where they match *besides* 13128. For example, 18302 and
actually also 2356 since you're joining a table on itself.
2006/9/19, Peter Van Dijck [EMAIL PROTECTED]:
Hi all,
trying to figure out if there is a query I can use for this, or if I
have to write a php script to loop tru each row...
table1:
entryid int(11)
itemid int(11)
table2:
object_id int(11)
The situation is: table2.objectid is populated
Peter Van Dijck wrote:
I have a table with userid and text. Users write text. I want to find
the top 5 users who have the most rows in this table.
I can't seem to figure out the query.. is there a query possible to do
this?
Thanks!
Peter
SELECT Count(*) as Count, UserID
FROM table
GROUP
brilliant, that works! Thanks!
On 8/20/06, Chris W [EMAIL PROTECTED] wrote:
Peter Van Dijck wrote:
I have a table with userid and text. Users write text. I want to find
the top 5 users who have the most rows in this table.
I can't seem to figure out the query.. is there a query possible
select userid,count(text) from blah group by userid;
--On August 20, 2006 7:22:59 PM +0100 Peter Van Dijck
[EMAIL PROTECTED] wrote:
I have a table with userid and text. Users write text. I want to find
the top 5 users who have the most rows in this table.
I can't seem to figure out the
The story so far, with comments:
Michael DePhillips wrote:
Hi,
Does anyone have a clever way of returning; a requested value with one
value less than that value, and one value greater than that value with
one query.
For example T1 contains
ID
1234
1235
1236
1238
select ID from T1
Michael,
I would think this is what you want.
Select ID from T1 where ID BETWEEN (id in question - 1) and (id in
question + 1)
If you want distinct values, place the distinct keyword in front of ID (i.e.
Select DISTINCT ID...
This should do it for you.
-Dan
Hi,
Does anyone have a clever
Michael DePhillips wrote:
Hi,
Does anyone have a clever way of returning; a requested value with
one value less than that value, and one value greater than that value
with one query.
For example T1 contains
ID
1234
1235
1236
1238
Assuming the id's are consecutive.
You want
Hi Dan,
Thanks for the prompt reply,
As I described it yes, you are correct, however, the id may not always
be one(1) value away. So the number one needs, somehow, to be replaced
with a way to get the next largest value and the previous less than
value.
Sorry for the lack of precision in
Michael DePhillips wrote:
Hi Dan,
Thanks for the prompt reply,
As I described it yes, you are correct, however, the id may not always
be one(1) value away. So the number one needs, somehow, to be replaced
with a way to get the next largest value and the previous less
than value.
Sorry
I think this will do it, although it takes three queries.
I'm assuming the id values are unique, even if there can be gaps
(that's what you might get with an AUTO_INCREMENT field). If the
values are not guaranteed to be unique then this may not give what
you want (if there are multiple
Hi Nigel,
A and B...please.
Perhaps a UDF could achieve my initial request...any ideas.
Thanks,
Michael
nigel wood wrote:
Michael DePhillips wrote:
Hi Dan,
Thanks for the prompt reply,
As I described it yes, you are correct, however, the id may not
always be one(1) value away. So the
/2006 10:47 AM
To
Michael DePhillips [EMAIL PROTECTED]
cc
Dan Julson [EMAIL PROTECTED], mysql@lists.mysql.com
Subject
Re: Query Question
I think this will do it, although it takes three queries.
I'm assuming the id values are unique, even if there can be gaps
(that's what you might get
Sims [EMAIL PROTECTED]
08/14/2006 10:47 AM
To
Michael DePhillips [EMAIL PROTECTED]
cc
Dan Julson [EMAIL PROTECTED], mysql@lists.mysql.com
Subject
Re: Query Question
I think this will do it, although it takes three queries.
I'm assuming the id values are unique, even if there can be gaps
On Monday 14 August 2006 07:08 am, Michael DePhillips wrote:
select ID from T1 where ID = 1235 and ID1235 and ID 1235 LIMIT 3
(obviously this doesn't work) I would want to return
1234
1235
1236
mysql select int_value, (int_value + 1) as value2, (int_value - 1) as value3
FROM
MySQL is doing a file sort on the query result. It's not sorting the entire table and it's not sorting the 40 record limit you
specified. It's sorting the WHERE id IN... result. After the sort, then it will return just the first 40 records.
You can throw and EXPLAIN in front of the query to see
I agree with Brent on what MySQL is doing ... are you seeing poor
performance with this query? If so, you might evaluate whether adding
an index on your 'post_date' column improves things, as MySQL may be
able to sort and thus LIMIT more quickly (using index in RAM rather than
reading off
Douglas S. Davis wrote:
Hi,
If the following isn't appropriate, please feel free to ignore. The
program I'm referring to is written in Perl and uses a MySQL database,
so I thought perhaps it would be appropriate for this list.
I have a webpage that displays a user's profile by selecting
Suppose you subscribe to a public email list that offers support on a
free open source database, and you see an email where someone doesn't
really provide nearly enough information to answer, what would you do?
What is the algorithm you are trying to implement to get the query-output?
Roy
Hi,
One way of doing it would be:
select a.tolerance, a.Cycles as PartA, b.Cycles as PartB, c.Cycles as PartC
from t as a, t as b, t as c where a.tolerance=b.tolerance and
a.tolerance=c.tolerance and a.PartName='A' and b.PartName='B' and
c.PartName='C';
Jacek
-Original Message-
Roy Harrell [EMAIL PROTECTED] wrote on 10/04/2005
03:15:33 PM:
Suppose I have a simple table as follows:
PartName Tolerance Cycles
A 1 10
A 2 11
A 3 13
A 4 15
A 5 18
B 1 12
B 2 14
B 3 16
B 4
Jacek,
Your method would only work so long as each PartA, PartB, and PartC all
have the same tolerance numbers. if PartA and PartB had a tolerance of 20
but PartC didn't, your query would not show just the A and B tolerances.
In fact, it wouldn't show a line for Tolerance 20 at all.
The only
; mysql@lists.mysql.com
Subject: RE: Query Question
Jacek,
Your method would only work so long as each PartA, PartB, and
PartC all
have the same tolerance numbers. if PartA and PartB had a
tolerance of 20
but PartC didn't, your query would not show just the A and B
tolerances
clearly need more input from Roy.
Jacek
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 04, 2005 12:56 PM
To: Becla, Jacek
Cc: Roy Harrell; mysql@lists.mysql.com
Subject: RE: Query Question
Jacek,
Your method would
Roy,
How do I set up a query whose output would look like this:
Tolerance PartA PartB PartC
1 10 12 6
2 11 14 7
3 13 16 7
4 15 16 8
5 18 17 10
One
Eddie wrote:
How can I join two tables looking like this?
Table 1:
++---+---+
| Id | Name | Score |
++---+---+
Table 2:
++---+---+---+
| Id | Name | Score | Info |
++---+---+---+
To get output table like this:
Table 2:
Jack Lauman wrote:
I have the following query which display every Cuisine in the database
sorted by the WebsiteName.
How can I modify this to get a COUNT of the number of records in each
Cuisine in each WebsiteName?
SELECT DISTINCT Restaurant.Cuisine, RestaurantWebsites.WebsiteName
FROM
Jack Lauman wrote:
Given the following query, how can it be modified to return 'Cuisine'(s)
that have no rows as having a count of zero and also return a SUM of
COUNT(*)?
SELECT w.WebsiteName, r.Cuisine, COUNT(*)
FROM Restaurant r
JOIN RestaurantWebsites w
ON r.RestaurantID =
Hi ,
This is a little off topic but I have seen count(*) on this list afew
times and it got me wondering...
Is there a reason to use SELECT COUNT(*) as opposed to SELECT COUNT(column)?
I have noticed that selecting count(*) versus specifying the column
name executes much more slowly.
I've
I believe the difference is that count(*) includes nulls (because it is
counting the number of records), whereas count(column) only counts the
records where the column being counted is not null, regardless of the
total number of rows.
Hmm, on a related question then if I am correct above, does
stipe42 wrote:
I believe the difference is that count(*) includes nulls (because it is
counting the number of records), whereas count(column) only counts the
records where the column being counted is not null, regardless of the
total number of rows.
Right. COUNT(*) counts rows, COUNT(col)
stipe42 wrote:
Jack Lauman wrote:
Given the following query, how can it be modified to return 'Cuisine'(s)
that have no rows as having a count of zero and also return a SUM of
COUNT(*)?
I'm sorry, but I'm having trouble picturing what you are doing. What is a
Cuisine with no rows? I see
Sorry... I was having a brain fart. (I use entries in the web.xml file
to generate a dropdown list of cuisines). The field cuisine is part of
the restaurant table. And it does not accept a null value. It should
be split out into it's own table.
I do need to get a SUM of all the values
Jack Lauman wrote:
Sorry... I was having a brain fart. (I use entries in the web.xml file
to generate a dropdown list of cuisines). The field cuisine is part of
the restaurant table. And it does not accept a null value. It should
be split out into it's own table.
I do need to get a SUM
Hi,
If i understand :
select month(entryDate) as monthPart, if (amount is
nul,'',day(entryDate) ) as dayPart, amount
from raindata
order by dayPart, monthPart
Best Regards
Mathias FATENE
Hope that helps
*This not an official mysql support answer
-Original
JA,
To have a SELECT statement generate a row for every day in the year,
either your raindata table needs a row for every day in the year, or you
need another table which has a row for every day of the year. Supposing
you have such a table, call it 'calendar' with a date column named
If my englsih is so bad, i'll try to explain and stop this thread now.
That's not what was being said.
I'm not teaching, i'm answering questions. If someone wants to read
docs, he (she) doesn't ask a question on the list. So if i answer, i
answer the question, just the question.
You want
FATENE
Hope that helps
*This not an official mysql support answer
-Original Message-
From: Martijn Tonies [mailto:[EMAIL PROTECTED]
Sent: mardi 26 avril 2005 12:29
To: mysql@lists.mysql.com
Subject: Re: Query question
If my englsih is so bad, i'll try to explain and stop
Mathias
There are no *bad* people on this list - different point of view, yes.
Participating on this and other lists requires give AND take - taking
advice as well as giving it... Participating is always going to be a
two way process so just accept it, and if you can't - unsubscribe.
Hope this
sorry Chris again,
i mean in what they speak about. i try help if i can, just that.
:o)
Mathias
Selon Chris Ramsay [EMAIL PROTECTED]:
Mathias
There are no *bad* people on this list - different point of view, yes.
Participating on this and other lists requires give AND take - taking
advice
Jeff McKeon [EMAIL PROTECTED] wrote on 04/25/2005 03:00:55 PM:
I have a table that contains records that link back to a main talbe in a
many to one configuration linked by table1.id = table2.parentid
Table1 (one)
Table2 (many)
I want to pull the latest records from table2 for each record
Hi,
You can do something like that :
mysql select * from son;
+--+
| a|
+--+
|1 |
|2 |
|3 |
+--+
3 rows in set (0.02 sec)
mysql select * from mother;
+--+--+
| a| b|
+--+--+
|1 | a|
|1 | b|
|2 | a|
|2 | c|
|3
mathias fatene [EMAIL PROTECTED] wrote on 04/25/2005 03:19:33 PM:
Hi,
You can do something like that :
mysql select * from son;
+--+
| a|
+--+
|1 |
|2 |
|3 |
+--+
3 rows in set (0.02 sec)
mysql select * from mother;
+--+--+
| a| b|
Jeff,
Something like ...
SELECT *
FROM table2 AS a
WHERE datestamp = (
SELECT MAX( b.datestamp )
FROM table2 AS b
WHERE a.parentID = b.parentID
);
PB
-
Jeff McKeon wrote:
I have a table that contains records that link back to a main talbe in a
many to one configuration linked by table1.id =
'; mysql@lists.mysql.com
Subject: RE: Query question
mathias fatene [EMAIL PROTECTED] wrote on 04/25/2005 03:19:33 PM:
Hi,
You can do something like that :
mysql select * from son;
+--+
| a|
+--+
|1 |
|2 |
|3 |
+--+
3 rows in set (0.02 sec)
mysql select
Thanks all but I don't have a mysql version high enough for subqueries.
Thanks,
Jeff
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]
Sent: Monday, April 25, 2005 4:01 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Something
support answer
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]
Sent: lundi 25 avril 2005 22:01
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Something like ...
SELECT *
FROM table2 AS a
WHERE datestamp = (
SELECT MAX( b.datestamp )
FROM
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 25, 2005 4:01 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Something like ...
SELECT *
FROM table2 AS a
WHERE datestamp = (
SELECT MAX( b.datestamp )
FROM table2
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 25, 2005 4:01 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Something like ...
SELECT *
FROM table2 AS a
WHERE datestamp = (
SELECT MAX( b.datestamp )
FROM table2
Mathias FATENE
Hope that helps
*This not an official mysql support answer
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]
Sent: lundi 25 avril 2005 22:17
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Then do it with 2
@lists.mysql.com
Subject: Re: Query question
Jeff,
Then do it with 2 queries,
SELECT @d := MAX( datestamp )
FROM table2
WHERE parentID = X;
SELECT *
FROM table2
WHERE parentID = X
@lists.mysql.com
Subject: Re: Query question
Jeff,
Then do it with 2 queries,
SELECT @d := MAX( datestamp )
FROM table2
WHERE parentID = X;
SELECT *
FROM table2
WHERE parentID = X AND [EMAIL PROTECTED];
PB
-
Jeff McKeon wrote:
Thanks all but I
: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Something like ...
SELECT *
FROM table2 AS a
WHERE datestamp = (
SELECT MAX( b.datestamp )
FROM table2 AS b
WHERE a.parentID = b.parentID
);
PB
-
Jeff McKeon wrote:
I have
Jeff
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 25, 2005 4:17 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff,
Then do it with 2 queries,
SELECT @d := MAX( datest
]
Sent: Monday, April 25, 2005 4:17 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
Jeff
this right now or i'd upgrade,
believe me!
jeff
-Original Message-
From: Peter Brawley [mailto:[EMAIL PROTECTED]]
Sent: Monday, April 25, 2005 4:43 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: Re: Query question
That's real syntax
mathias fatene [EMAIL PROTECTED] wrote on 04/25/2005 04:24:42 PM:
Hi,
Im sorry to disappoint you but this is an anti-performance solution.
Use joins rathers than subqueries, and don't use joins if you can (all
data in the mother table).
Imagine that table2 has 30.000.000 records, and not
25, 2005 4:36 PM
To: Jeff McKeon
Cc: mysql@lists.mysql.com
Subject: RE: Query question
Jeff McKeon [EMAIL PROTECTED] wrote on 04/25/2005
04:08:29 PM:
Thanks all but I don't have a mysql version high enough for
subqueries
answer
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: lundi 25 avril 2005 23:02
To: mathias fatene
Cc: 'Jeff McKeon'; mysql@lists.mysql.com; [EMAIL PROTECTED]
Subject: RE: Query question
mathias fatene [EMAIL PROTECTED] wrote on 04/25/2005 04:24:42 PM
SELECT product_lines.* FROM product_lines LEFT JOIN
manufacturer_product_line_index ON
manufacturer_product_line_index.product_line_id = product_lines.id WHERE
product_lines.id IS NULL
-Original Message-
From: Ed Lazor [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 07, 2005 11:39 AM
To:
Ed Lazor [EMAIL PROTECTED] wrote on 04/07/2005 12:39:01 PM:
Three tables like this:
--
product_lines
--
id
title
--
manufacturer
--
id
title
--
manufacturer_product_line_index
--
id
product_line_id
Whew, thanks Jon =)
-Original Message-
SELECT product_lines.* FROM product_lines LEFT JOIN
manufacturer_product_line_index ON
manufacturer_product_line_index.product_line_id = product_lines.id WHERE
product_lines.id IS NULL
--
MySQL General Mailing List
For list archives:
Jerry Swanson [EMAIL PROTECTED] wrote on 03/29/2005 11:43:56 AM:
I want to get everything from user than if record exist in admin so
user has admin(administrator) in table user with user.id =
admin.admin_id, so I need to get 'admin' first_name and last_name
If there is no record in table
This will return the top 50 urls in descending order of popularity.
SELECT URL, count(1) as popularity
FROM yourtablename
GROUP BY URL
ORDER BY popularity DESC
LIMIT 50;
Feel free to adjust as needed.
HTH,
Shawn Green
Database Administrator
Unimin Corporation - Spruce Pine
Ed Lazor [EMAIL
Ed,
Try the following query
select ID,
DateAdded,
URL,
count(*) as 'cnt'
from mytable
group by URL
order by cnt desc
It should display the most numerous URLs in the table.
dimitar
-Original Message-
From: Ed Lazor [mailto:[EMAIL PROTECTED]
Sent: Thursday,
Thanks, Shawn. I didn't think count would just limit to the items being
grouped - very handy =)
-Ed
SELECT URL, count(1) as popularity
FROM yourtablename
GROUP BY URL
ORDER BY popularity DESC
LIMIT 50;
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To
Quite possibly since 0 could also mean false depending on your
comparison operator. For instance, using a generic if statement, these
two would both evaluate to false:
if(0)
if(null)
You should be very specific when checking for NULL.
WHERE field IS NOT NULL
or
WHERE field IS NULL
Also, you may
I think I'm on the right track but still in question
After all the joins I added a and LocationState = x.
I'm not totally sure, because I want to search for
records based on (for now)3 conditions (state, city,
industry).
Two things I should mention , the somewhat strange
notation is becaue I'm
Stuart Felenstein wrote:
I'm hoping I can present this correctly. I'm trying
to determine how to set up my where condition as, 1
way has already failed me. While I continue to
figure this out (i'm a noob), I hope asking for some
advice here won't be too awful.
There is one main table where data
Well I feel like maybe I wasted some bandwidth here.
I think what I'm looking for is a square peg in a
round hole. That won't work.
More to the point :) , I do not having a problem with
the AND / OR / IN / NOT / etc.
What I think I was attempting was to come up with a
SQL statement that will
Select count(distinct(field)) from table where field = 0 ?
-Original Message-
From: Laercio Xisto Braga Cavalcanti
[mailto:[EMAIL PROTECTED]
Sent: Monday, May 24, 2004 11:18 PM
To: 'John Nichel'; 'MySQL List'
Subject: RE: Query question
You can do:
Select count(distinct(field)) from
1 - 100 of 161 matches
Mail list logo
