Tracking Forums, Newsgroups, Maling Lists
Home Scripts Tutorials Tracker Forums
  Advanced Search
  HOME    TRACKER    MYSQL


SuperbHosting.net have generously sponsored dedicated servers to ensure a reliable and scalable dedicated hosting solution for BigResource.com.





Subqueries And LIMITs...


I want to display a subset of data from another query...

Basically I've got 3 tables which are all joined together in a query...

Lets say I have 300 results rows displayed from that query. Is there a way I can then limit those results without effecting the original query (I still need to be able to pull all the results as well)

I've tried (and it didn't work)...

Quote:

SELECT * FROM products, manufacturers, brands
WHERE

(SELECT stock_code FROM products, manufacturers, brands

WHERE

(manufacturers.manufacturer_id = brands.house_id) AND
(products.brand_id = brands.brand_id)

ORDER BY

manufacturers.manufacturer_name,
brands.brand_name,
products.stock_code)

LIMIT 0 , 10




View Complete Forum Thread with Replies

Related Forum Messages:
Row Limits
SELECT JID, JState, JClass, JClass2, JTitle
FROM JPosts
WHERE `JobClass` ='Designers'
ORDER BY JTitle, JState

With this giving many results per state:

a) how can the results be limited to 2 rows per JState?

b) how to limit to 2 of the same JClass2 per JState (where JState still has 2 row maximum also)

notes:
JTitle is a job title
JClass2 is a 2nd type class, here it could be 'Floor_Designers'

View Replies !
Set Limits
When I was on a shared server I used to manage (access, edit, etc.) my databases with phpMyAdmin
Now, on a dedicated server I am the super-user trying to get the same.
Under "privileges" I can create new users (for a virtual server)
If I check (allow) any of the global privileges he will see and browse ALL existing databases.
The only way I see to avoid this is only to set privileges to some existing databases.
A new user would want to create new ones to start his project not to use existing ones.
How can I set wide privileges to a user keeping visible only his databases?
Limit number of databases?

View Replies !
About Limits
I have 256 databases with around 30k tables in them (running a bloggind service). I've been using tuning-primer.sh for sometime now and I've been trying to edit some settings as recommended.

So far so good, except 2 limits that are being ignored.

Open_files_limit is stuck at 65535, no matter what I set it in my.cnf
Table cache is stuck at 32712, no matter what number I try to set higher that that.

I am using CentOS 5.2 64bit, with WHM/Cpanel. Using Mysql 5 and PHP 5.

I've tried using ulimit -n, but once I logout it resets back to 1024.

View Replies !
Selecting And Limits
I Have

SELECT * FROM authors WHERE auth_id = $auth_id LIMIT 1

and that does exactly what it is supposed to do
BUT,
perhaps I wanted to select everything EXCEPT the first result?
How would I filter that one out?

View Replies !
Innodb And Limits
is there a limit for the amount of tables in InnoDB?
I want to create about 60 Databases with 30 Tables per Database, that means 1800 Tables.

View Replies !
Mysql Limits ?
I have a site i am working on that uses a Mysql database for a forum. However I would like to have a site search function as well. is it possible to use a Mysql database for more than one task?

View Replies !
Limits For TABLES In DATABASE
where can I find limits of how many TABLES can exists in one DATABASE?
Also, is there any performance penalty (or other) for having alot of
TABLES in one DATABASE?

View Replies !
Limits On Amount Of Records
How many records can mysql handle? If i had a users table could I hold 100,000 users (records)? Where can I find the limits for MYSQL?

View Replies !
Database Table Limits?
I'm having some trouble with accessing or altering my tables in database and I was wondering if this was due limitations in table size. I created a few tables with about

4000 rows
at least 3 columns

When I attempt a SELECT *
and use PHP to print out the Table, the browser just gets stuck loading the data.
Also, any attempt to CHANGE field names gives me the same result. I tried

ALTER TABLE tableName CHANGE oldname newName INTEGER

and the browser also gets stuck loading the page.

Are these tables simply too large to handle? what's wrong?

View Replies !
Limits On Large Files?
I am developing a secure file upload/download site.

My approach is to use an account driven system which allows for file upload/download.
The files will be "absorbed" into the database directly, as opposed to leaving them on the web file structure. The file downloads will be by "releasing" from the database.

My basic application operates currently, however, I am running into a limit problem.

I cannot upload beyond 17 MB file.

I am on WinXP, PHP v 4.3.10, MySQL v 4.1.8, and access to Apache v2.0.52 (port 80) and Abyss v 1.2.3.0 (port 8000).

I have learned that these variables with upload influences are...

PHP: file_uploads = on
PHP: post_max_size = 30MB
PHP: upload_max_filesize = 30MB

MySQL: max_allowed_packet = 30MB

View Replies !
Pushing MySQL Limits?
I'm a total idiot when it comes to MySQL stuff and that is exactly why I am posting here.

I'm developing a script for a specific site of mine. Basically, it's a “cast your vote” type of thing. There are basically 50 categories that my users will be voting on for each article. I expect to get at least 1,000 votes per article (maybe even 100,000 votes by the end of next year) per day and I the number of articles could be in the thousands as well. These votes would need to be averaged out occasionally to display the most popular articles in their given field.

How practical is this kind of database load? It seams like this would be an enormous load on any MySQL database. What kind of hardware budget are we talking to make sure this setup could be stable?

All of my php code would be verified by a mega php programmer to make sure it's as efficient as possible and I'd probably pay a MySQL expert to make sure the code is as efficient as possible on the server end as well.

View Replies !
Limits On Table Types And Database?
I have been using the mysql database in my project. It recently came to mind that their may be limits on how much data a table or database itself can hold. I did some googling on it.

I found this on table types -
InnoDB has no limit
MyIsam is limited to 4gb - but I found a site that showed how the limit could be increased.

So there are size limits on certain types of tables - but what about the database itself? I have a database that consists of a large amount of tables. Some tables are holding bytes (column type = mediumblob; to store images) in their rows. I'm concerned that when I go live with my project that I might run into problems if a limit is reached or exceeded.

View Replies !
Show Limits Of A Data Interval ... Formatted
I've executed this query successfully...

SELECT NAME,DATE_FORMAT(DATEBORN,'%d/%m/%Y') AS BDAY WHERE WEEK(DATEBORN) = WEEK(CURRENT_DATE()) ORDER BY DATEBORN ASC

This script is executed every friday with cron, and shows all the people whom had birthday in last 7 days...

Now, How could I modify query to show something like:

"Listing of people whom had birthday between 20/07/2005 and 27/07/2005" (I'd like to know how to get the date limits in this interval of 7 days selected)

I mean, how to show date interval/range of people whom were selected in the script execution, no matter which day script was execd.

View Replies !
Subqueries On 4.0.25 Without Subqueries
i have 2 tables. knowing subqueries cant be performed on this version how would i write the following statement?

i have 2 tables
table.a, table.b

I want to select all records from table.a that match table.a.id = table.b.id WHERE table.b.varchar = 'value'

once the table.b.varchar is found, get table.b.id and match it to any records in table.a.id that match it.

Can this be done in 1 statement. I'd hate to have to run a loop here. I've tried without success JOIN statements.

here is one of my attempts:
"SELECT table.a.* FROM table.a, table.b WHERE table.a.id = table.b.id AND table.b.varchar = '$value' GROUP BY table.a.sortkey ORDER BY table.a.is_primary DESC ";

this does return 1 row, and joins the 2 tables accordingly, however i need all rows in table.a that match the table.b.id where table.b.varchar = 'value'

View Replies !
Use Of Subqueries With IN
I'm trying to do the following query:

select * from table1 where col1 in (select col1 from table2);

I keep getting a message to check my query after "in". But I've cut and pasted that query and it works. This is a very simple query so I don't understand why it doesn't work.

View Replies !
Subqueries With ALL
I got following statement:

SELECT * FROM ip WHERE id <> ALL (SELECT ipid FROM pcip);

Like I can see in the documentation, this should be correct, but SQL drops a SyntaxError near "ALL (SELECT ipid FROM pcip)"

What it dows should be ovious, select all IPs that IDs are not noticed in the PCIP table under IPID

The Tables are set up correct, means both tables exist and got values for the mentioned collums

My MySQL version is 4.0.21 if that is part of the problem...

View Replies !
Subqueries For V3.23
An upgrade is definately coming, as some some SQL practice, but I'm trying to figure out how to do a subquery and not entirely certain where to turn to.

From my limited understanding of SQL, what I want to do should look like:

SELECT
(SELECT count(SurveyData.Choice) WHERE SurveyData.Choice='0') as a,
(SELECT count(SurveyData.Choice) WHERE SurveyData.Choice='1') as b,
(SELECT count(SurveyData.Choice) WHERE SurveyData.Choice='2') as c
FROM SurveyData

The SurveyData table contains 3 fields: SID (Int), Name (Varchar 100), Choice (Int)

I'd like to use it as the basis for a reusable/scalable web survey app (perl CGI), but all I'm getting is a syntax error.

View Replies !
Subqueries With NOT IN And &lt;&gt; ALL
I am having troubles with the following on 4.0.22:
select *
from question as q
where q.id NOT IN (select distinct question from choice );

choice.question ---> question.id

Apparently there's a syntax error, at (select distinct ....)
<> ALL yields the same result.

View Replies !
Possible Without Subqueries
I'm trying to merge the result of 2 queries but I can't use subqueries.

The first query gets all the sign-ups from a particular referer, the second query gets how many of those sign-ups are still active.
So the first query does a count, group by ref and the second one does count where active group by ref - I know I could do this easily with subqueries but without them I'm lost.

View Replies !
Subqueries?
I'm using MySQL Control Center 0.9.2-beta. Will this take subqueries? I'm trying to extract data from tables in two different databases, and I'm not all familiar with JOINS. What is the syntax to do this in a subquery? In a JOIN?

View Replies !
Max() & Subqueries
Cant seem to get what i want Missing something so fundamental. Did it with subqueries on server at home just cant seem to get my head round it without using subqueries

I have 3 tables ....

View Replies !
UNIONS In Subqueries
I have a problem using UNIONs inside subqueries. I have simplified my query to make it more readable. The question is about the right syntax.....

View Replies !
How To Rewrite This Without Subqueries?
i have a table that contains the fields order_id, canceled, and
captured. the same order_id can appear many times in the table. i
want to retrieve all the order_ids for which NO record exists that has
both canceled and captured = N.

i am not able to upgrade my version of mysql at the moment, so i would
like to write a query that does that with no subqueries.

View Replies !
SQL, Count And Subqueries
I have one table that lists a number of courses available (including
CourseID, CourseName and MaxPositions), with CourseID being auto_increment and unique

I have another table which has CourseRegistration (Containing CourseID and
CustomerID), with no unique fields. Customer information is stored
elswhere.

Without having a field in the Courses table holding the number of people
currently registered, how would I return a result set which included:

CourseID, CourseName, MaxPositions and the Number of people registered to
take that course.

Preferably this would not use features in MySQL 4.1, but anything is fair
game at this point.

View Replies !
Theory Of Subqueries For 4.1.7
While converting SQL statements for a database change, I discovered a
big performance hit in MYSQL with subqueries vices Sybase. I'm hoping
that someone might be able to help me understand why?

I have two tables USERS (2200 records) and JOB Decriptions (163
records). I wanted to retrieve all the job description not in the
USER table. (No Indexes on JOBDESC currently)

select JOBDESC from JOBS where JOBDESC not in ( select JOBDESC from
USERS where JOBDESC not NULL )

In Sybase the query returns in about .56 secs
In Mysql 4.1.7 query returns in about 8.78 secs

The funny thing is if I run the query like so

select JOBDESC from JOBS where JOBDESC not in ('President','Vice
President','Treasaur','Secretary')
returns in .03 secs.

Those four descriptions are returned by the inner select.

All select statements individually return in .03 secs.
I created indexes on both tables for JOBDESC and reduced the time to
..97 secs. I used explain command to help understand what is going on
hence the indexes, but why the difference in speed?

View Replies !
Removing Subqueries
the query i want execute is:

select email from avalia where email in (select * from avalia where nome=img/im1.jpg) and email in (select * from avalia where nome=img/im2.jpg)

but mysql 4.0 don't acept subqueries.

View Replies !
Optimization :: Subqueries
i have a little complex query that involves sub queries upto three levels. now thing is that , i think, mysql evaluates the sub queries every time that query is evaluated, whereas, i know that results for the third and 4th level queries are same for some number of queries. can we force mysql to store the result of the subqueries to be used later, instead of reexecuting the query.i studied mysql query optimization but, finally concluded is that things over there are just how mysql optimizes queries, not how can we optimize the query to be performed better. any resources for query optimization, i mean good resources ?

View Replies !
Subqueries And The IN Operator
hey all,

i am having serious problems with getting my head around why this will not work. i am trying to return a number of games played with a count of the number of people in it. the table structures are as follows:

games

gameref | gamepot | gamedate | gamelength |

..1...... | .... 50.... | 12.12.04 | ... 03.00.00 |

winnings

gref | pref | amountwon | stake |
1 . .| 1 .. | ....20 ...... | 10...|

i have used the dots to try and keep the table in some sort of form. i have only entered one row of data for each just to show the format of it, if this is not enough please ask for more.

the games table holds each game that has been played, the total pot available to be won the date played and the duration of the game.

the winnings table is teh winnings of each player in each game. the gref is the game it refers to, the pref is teh player it refers to, (there is a player table but is not used in this query at all). the amount that player won and the stake they entered into the pot.

if ya didnt gues its a poker database. my problem is as follows.

Quote: $sql = ("SELECT games.*, COUNT(winnings.gref) as playercount, winnings.gref
FROM games, winnings
WHERE gameref = gref
group by gameref
order by gamedate");

this query works a treat. it counts the amount of players in each game and outputs it all nicely.. but i wanted to edit the query to be able to show just all the games a single player had been in.

Quote: $sql = ("select games.*, COUNT(winnings.gref) as playercount, winnings.gref
from games, winnings
where gameref in (select gref from winnings where pref ='$pid')
group by gameref
order by gamedate");

$pid is passed into the page by

Quote: pt_register('POST','pid');

but this throws an error

Quote: Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/ghoxmfjz/public_html/database/poker/allgames.php on line 32
Query failed!

line 32 is:

Quote: $nrows = mysql_num_rows($result);

i can get it to work if i substitute the subquery for (1,2,3) being the first 3 games played. this would assume a certain player would have been in these 3 games.

the problem i get is that the COUNT function just counts every player in everygame not the individuals. if i group it by gref it counts them (sort of.. it doubles the count) but then does not return any of the other information for the query.

i am very confused any and all suggestions of things to look at or consider or a straight ur doing XXX wrong would be grand.. thx all

Jon

oh btw if you wish to look at the output if that helps the URL is:

http://www.happygolucky.me.uk/database/poker/allgames.php

with the variable $pid as the reference to try the player.

View Replies !
Subqueries Clarification
im using MySQL 4.1 the one the comes with XAMPP installer.. I have a question regarding correlated subqueries..in this version of
MySQL, are correlated subqueries supported?

as in like..

$query1= select field from table where field = 1;
$query2= select field from table4 where field= 4;

Insert into tmpTable ($query1,$query2)

View Replies !
SubQueries Prior
Does anybody know how to rewrite the following query to run on mysql 4.0.20.
Is it possible to do this with JOINS? (I don't really have to join 2 tables...
SELECT *
FROM OAK_photos
WHERE cat_id = (SELECT cat_id FROM OAK_photos WHERE id=$id)
AND order_nr >= (SELECT order_nr FROM OAK_photos WHERE id=$id)
ORDER BY order_nr ASC
LIMIT 0 , 5

or should I run the 2 subqueries first as seperate queries and pass on the outcome via variables to the third query, the above main query?

View Replies !
Using CONCAT In Subqueries
SELECT tblmonths.fldMonth, tblyears.fldYear, tblmonths.fldID, CONCAT(tblmonths.fldID," ", tblyears.fldYear)
FROM tblmonths, tblyears
where CONCAT(tblmonths.fldID," ", tblyears.fldYear)
NOT EXISTS
(SELECT CONCAT(fldMonth, " ", fldYear)
from tblexpensesclaims)
GROUP BY tblyears.fldYear, tblmonths.fldID

View Replies !
Subqueries In The FROM Clause
I'm using 1&1 web hosting services with MySQL as database (Ver 14.12 Distrib 5.0.16, for pc-linux-gnu (i686) using readline 5.0).

When I ran an example in Chapter 13.2.8.8 from MySQL 5.0 Reference Manual:

CREATE TABLE t1 (s1 INT, s2 CHAR(5), s3 FLOAT);
INSERT INTO t1 VALUES (1,'1',1.0);
INSERT INTO t1 VALUES (2,'2',2.0);
SELECT sb1,sb2,sb3
FROM (SELECT s1 AS sb1, s2 AS sb2, s3*2 AS sb3 FROM t1) AS sb
WHERE sb1 > 1;

I always get the following error message:

ERROR 1064 (00000): You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT s1 AS sb1, s2 AS sb2, s3*2 AS sb3 FROM t1) AS sb

View Replies !
Problem With Subqueries
I am trying to find the rows in table1 that do not have matching rows in table2 in order to set the value of a field in table1. I can get a query to return the rows that do have matches with this query:

select item1 from table1 where item1 in (select item2 from table2);

However, the following queries return no data:

select item1 from table1 where not(item1 in (select item2 from table2));
select item1 from table 1 where item1 <> all(select item2 from table2);

My understanding of the first query is that the not operation would be applied after evaluating whether item was in the result of the subquery. With the second query, I thought it should return true if item is not equal to every result in the subquery. If I try to use a left join and then simply find the rows that have a null value coming from table2, I get the correct resultset but I can't use that as a subquery for my update statement. Since table1 is what is being updated MySQL tells me that table1 cannot be used in the subquery for the update statement. I have this working in a stored procedure by importing the result of the join into a temporary table, but I'd rather not have to write all that data and then delete it.

View Replies !
Can I Do Subqueries With MySQL?
I wanted to know how can I do subqueries with MySQL?

View Replies !
Slow Subqueries
I know (by internet) that mySQL is very fast. Problem is that my subqueries that are very fast in Access or SQL Server but they are very slowly in mySQL - since I have to restart my computer because mySQL freeze all the processes. (the resources where used at maximum - 2 Gb RAM, 2,5 Ghz processor)

This is the query :
SELECT NPL, PP FROM P_A INNER JOIN ACTIONS
ON P_A.NA =ACTIONS.ACT_N WHERE P_A.NA in
(SELECT NA FROM P_A WHERE NP ='ABC')

P_A has 5 columns and 12000 rows
Actions has 5 columns and 770 rows

Any suggestions ?

View Replies !
Column Subqueries
to the best of my knowledge, a column subquery is a single column resultset with many rows, i'm assuming joined by some previous column / row value.

can anyone show me a column subquery, manybe even a multiple column subquery, with a very small discussion on what they did and what it would return?

I'm looking to return a query like username, company name, company location, application, application role, application persission where I do not get the "normal" repetitive SQL resultset.

note: column subqueries may not be my direct answer but I still wanted to see what column subqueries was all about.

View Replies !
Subqueries In MySQL 4.0?
I've got the following query. I just found out that subqueries are not supported by MySQL 4.0...

How would I replicate this to work with MySQL 4.0?

SELECT DISTINCT CategoryID, tblCategory.Category FROM tblCategory INNER JOIN
(SELECT Cat FROM ( SELECT tblCategory.Category AS Cat FROM tblEntries)
UNION SELECT Cat FROM ( SELECT Category2 AS Cat FROM tblEntries) UNION
SELECT Cat FROM ( SELECT Category3 AS Cat FROM tblEntries)) As A ON
tblCategory.CategoryID = A.Cat;

Table tblCategory
CategoryID = index key
Category = Text entry describing the Category

Table tblEntries
Category = key link to tblCategory
Category2 = key link to tblCategory
Category3 = key link to tblCategory

Basically, I want a list of Categories that are used in tblEntries.

View Replies !
Subqueries And Limit
I am a beginner with MySQL and I have this very large table where queries take a long time to complete. I was trying to limit the amount of time by limiting the scope of the query to only a few rows, by using LIMIT. To that effect a construct like:

SELECT * FROM table LIMIT 100;

seems to work perfectly, because it returns the 1st 100 rows from the table.

The problem is, I cannot use this in a subquery. In other words, if I try something like:

SELECT * FROM (SELECT * FROM table LIMIT 100) as temp;

I'm getting an error. I read the documentation about subqueries in the FROM clause, but I cannot figure out what's qrong with the syntax.

View Replies !
Subqueries To Mysql 3.x.x
I know that mysql 3.x.x does not support subqueries so i need your help with a query..

I need to make possible to search concurrently both fields. The user can insert only part of the word that is searching so i used the like '% keyword %'. in musql queries

Now my tables are
Table Titles:
Title (mediumtext)
AuID (integer)

Table Authors:
Author (mediumtext)
Au_ID (integer)

If i had support for subqueries then i would have done it easily

select Title from Titles where Title LIKE '%user title entry%' and AuID= (select AuID from Authors where Author LIKE '%User author entry%')

Now i don't have support for subqueries i need help for writing this query.

View Replies !
Queries And Subqueries
SELECT COUNT(t.id) AS tuttotal, (SELECT COUNT(t.id) FROM tutorials AS t WHERE t.status = 1) AS pendtotal, (SELECT COUNT(r.id) FROM reports AS r) AS reptotal FROM tutorials AS t
If I input that SQL into mysql it returns exactly what I'm after. And on my development server it works as expected.

However on my production server I am getting an error when I try it in PHP;

You have an error in your SQL syntax near 'SELECT COUNT(t.id) FROM tutorials AS t WHERE t.status = 1) AS pendtotal, (SELECT' at line 1

I think it might be that my server is running an earlier version of MySQL, 3.23.28 I believe.

View Replies !
SELECT .. WHERE .. Subqueries ?? Is It Possible?
I have a page which will send over three possible query's to the other page, but the page receiving the query's will only ever execute one..

gal/event/date
gal/venue/date
gal/event/venue/date

I need the page receiving this data to be able to handle what ever gets passed over..

I currently have:

SELECT photo_id, DATE_FORMAT(date, '%d%m%y') AS subdir, views, caption FROM photos WHERE venue_id='$venue_id' AND date='$date'"
which deals with 'gal/venue/date' from above, but how can I structure the SELECT and WHERE so I can have them all covered but in the one SELECT statement?

View Replies !
Does MySQL (4.0.20-standard) Allow Subqueries
Im moving a development app (MySQL 5.0) to a different server which
runs MySQL 4.0.20-standard. I am getting errors on queries that have
subqueries such as...

SELECT id
FROM table1
WHERE id IN (
SELECT id FROM table1
)

Seems like such a simple query but it wont run? Anybody know the
answer and what other limitations im going to experience going from
version 5.0 down to 4.0.20-standard.

View Replies !
Does MySQL (4.0.20-standard) Allow Subqueries???
Im moving a development app (MySQL 5.0) to a different server which runs MySQL 4.0.20-standard. I am getting errors on queries that have subqueries such as...

SELECT id
FROM table1
WHERE id IN (
SELECT id FROM table1
)

Seems like such a simple query but it wont run? Anybody know the answer and what other limitations im going to experience going from version 5.0 down to 4.0.20-standard.

View Replies !
Having Trouble With Subqueries With Mysql 4.0.21
i'm trying to make this command run:

select MAID from spez_MA where MAID = any(select MAID from spez_P_MA where P_ID = 1)

on a mysql server 4.0.21. and i get an error

#1064 - You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '( select MAID from spez_P_MA where P_ID = 1 )
LIMIT 0, 30' at

the command works using the same database in another mashine running mysql 4.1.22.

where can i find the documentation of the correct syntax for 4.0.21? my sintax is according with http://dev.mysql.com/doc/refman/4.1/en/any-in-some-subqueries.html, but this is for 4.1, not for 4.0. this manual should be for versions 3.23 and 4.0 too.

View Replies !
JOIN Versus Subqueries
I'm always looking to expand my skills and knowledge, and as such I'm currently working on rewriting several of my old apps that make atrocious abuses of MySQL queries. I've pounded out several of them into single statements using subqueries, but on this forum I've noticed very little subquerying and a lot of JOINing.

So my question is, what are the benefits/costs of subqueries vs JOINs? When would you use one over the other, and why? If this is too general to answer here, could someone point me toward a tutorial or somesuch that could edumecate me?

View Replies !
Subqueries And DISTINCT From MySQL 5 To 4
Ugh... been working on a project for some time now and I'm just plain stuck and the SQL is getting over my head. I would LOVE any help you can give me. The following query works beautifully fast on my in house machine (mySQL 5) but when I brought it over to the live server (mySQL 4.1) the query takes about 30 seconds to compile... I realize I am not a SQL rock god...

SELECT DISTINCT p.pailid AS PID, p . * , (

SELECT COUNT( * ) AS c
FROM feed
WHERE pailid = PID
AND display =1
) AS numFeeds, (

SELECT COUNT( * ) AS c
FROM comments
WHERE pailid = PID
) AS numComments, c.title AS cattitle, (

SELECT COUNT( * ) AS q
FROM flags
WHERE pailid = PID
AND userid =1
) AS isFlagged
FROM pail p, feed f, category c
WHERE p.pailid = f.pailid
AND f.display =1
AND p.categoryid = c.categoryid
ORDER BY p.date DESC
LIMIT 0 , 50
Should I convert this to JOINS? If so, could someone give me a hand as I am LOST when it comes to JOINS.

View Replies !

Copyright 2005-08 www.BigResource.com, All rights reserved