the thing with JOINs are you gotta JOIN a table ON another table where
something matches something else (in most cases). I tried to clean this up a
bit but im rather new to mysql.
SELECT DISTINCT
(td.td_id),
td.venue_id as ven_id,
td.td_date as td_date,
art.NAME as art_name,
art.WEB as art_url,
Dear All,
I've been hashing out this query for awhile with no luck as of yet.
Basically the query works if I put a limit of 500 or so but when I do the full
query it takes up so many resource that the database engine is useless.
Here is the query:
SELECT DISTINCT (td.td_id) ,td.venue_id as
Paul Nowosielski wrote:
Dear All,
I've been hashing out this query for awhile with no luck as of yet.
Basically the query works if I put a limit of 500 or so but when I do the full
query it takes up so many resource that the database engine is useless.
Here is the query:
SELECT DISTINCT
= art.PKEY AND td.venue_id=tv.ID)
LIMIT 500
- Original Message -
From: Paul Nowosielski [EMAIL PROTECTED]
To: mysql@lists.mysql.com
Sent: Friday, June 23, 2006 3:27 PM
Subject: Left Join Help
Dear All,
I've been hashing out this query for awhile with no luck as of yet.
Basically the query
I ammend my previous post.
Paul Nowosielski wrote:
Dear All,
I've been hashing out this query for awhile with no luck as of yet.
Basically the query works if I put a limit of 500 or so but when I do the full
query it takes up so many resource that the database engine is useless.
Here is the
Paul,
SELECT ...
FROM
tourdates td,
tbl_ARTST as art,
artist_tourdate artd ,
tbl_VENUES tv,
tbl_VENUE_CAPACITY tvc ,
tbl_VENUE_AGE_XREF tvax,
tbl_VENUE_AGES tvage
LEFT JOIN tbl_VENUE_CAPACITY ON (tv.ID=tvc.VENUE_ID)
LEFT JOIN tbl_VENUE_AGE_XREF ON (tv.ID=tvax.VENUE_ID)
LEFT JOIN
Thank you all so much for your help, here is my solution:
(I'm sure I can do a little more optimization)
SELECT DISTINCT (td.td_id) ,td.venue_id as ven_id, td.td_date as td_date,
art.NAME as art_name,art.WEB as art_url, artd.artist_id as art_id, tv.ID,
tv.NAME as ven_name, tv.ADDR1 ven_add0,
Dan Hansen wrote:
is essentially giving me what I need:
CREATE TEMPORARY TABLE temptable
SELECT state.name AS state , group.name AS group,
group.zip AS zip, city.name AS city
FROM city, group, zip
LEFT JOIN state ON city.state_id = state.id
WHERE group.zip = zip.zip
AND zip.city_id =
You're confusing the left/right sides of LEFT JOIN...
Using LEFT JOIN, it is the right table that is dependent on the left
table. All results from left table are selected.
So you may try:
SELECT state.name AS state , group.name AS group,
group.zip AS zip, city.name as city
FROM state
LEFT
I believe I tried that -- but when I did (and I just repeated it with the
same result) mysql effectively hangs (i.e. the query takes interminably
long -- I let it run for 20 minutes before killing it).
So should I be looking at an indexing issue? Right now the only things
indexed in the
* D. R. Hansen
At 03:51 AM 10/15/03, Diana Soares wrote:
You're confusing the left/right sides of LEFT JOIN...
Using LEFT JOIN, it is the right table that is dependent on the left
table. All results from left table are selected.
So you may try:
[...]
I believe I tried that -- but when I did
For everyone who helped, THANK YOU!!
For anyone who might be interested, here's what finally did the trick and
is essentially giving me what I need:
CREATE TEMPORARY TABLE temptable
SELECT state.name AS state , group.name AS group,
group.zip AS zip, city.name AS city
FROM city, group, zip
LEFT
Uberdumb question - but I'm still enough of a newbie that this is giving
me fits...
I have four tables, with relevant columns as follows:
++ ++
group zip
-- --
name varchar city_id int
zip mediumint zip
One of these days I will maybe understand...
Using MYSQL 4.0.13, debian linux
create table members (
id unsigned int autoincrement,
name
)
create table activity (
id unsigned int autoincrement,
description
)
create table history (
id unsigned in
Rick Pasotto wrote:
One of these days I will maybe understand...
A left join (t1 LEFT JOIN t2 ON condition) is defined as follows.
For each row in t1, find all matching rows in t2 and return the
combination of t1 and t2 found. If there are no t2s for a t1, leave the
t2 values NULL in the
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