While 10 users per minute isn't all that much and your system will
probably handle it without a problem, you should always worry about
doing 12 queries for a single action.
I'm not sure what your data structure is like, a single table with one
column for each attribute or one record for each as
A quick question on the performance of the SELECT statement.
I have a table with a set of 50 products, each product has about 10 attributes
associated with it.
The user will select certain aspects of a product (height, weight, colour,
length etc.), and many products may display a particular att
M myTable
WHERE Closeout = 'Y'
HTH.. :)
Leo
> -Original Message-
> From: Andy [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, June 02, 2004 1:34 AM
> To: [EMAIL PROTECTED]
> Subject: Combining multiple selects into 1 select.
>
> Hello,
>
> Is is possible to c
Hello,
Is is possible to combine the results of multiple selects into one
query/result? And if so, how do you implement it? A simple example follows:
Query 1:
SELECT *
FROM myTable
WHERE OnSale = 'Y'
Query 2:
SELECT *
FROM myTable
ORDER BY Category
Query 3:
SELECT *
FROM myTable
WHER
A * by itself must come first, so
SELECT *, "A" AS SortCode FROM Jobs
will work.
[EMAIL PROTECTED] wrote:
I am not sure about MySQL but in Oracle this will NOT work: "SELECT "A" AS SortCode,
* FROM Jobs"
However, this WILL: "SELECT "A" AS SortCo
ent and you're done. One pass instead of 4 and no UNIONs.
You might have to tinker with the syntax if CASE is not available in MySQL to this
extent but that's the general idea.
In a message dated 4/13/2004 6:50:33 PM Eastern Daylight Time, [EMAIL PROTECTED]
writes:
>
Hey gang, many thanks to all for pointing me in the right direction for
my previous "multiple selects" question. I moved to 4.1.1 and
implemented Udikarni's use of multiple sum()s instead of multiple
selects() and that stuff is all groovy now!
Of course, I'm beating my he
0) as "avg_of_complete"
FROM tableFLIST
You'll get all 3 results in one pass.
>
> You will need to be using MySQL 4.1.x in order to perform sub-selects.
>
> -Original Message-
> From: Steve Pugh
> To: [EMAIL PROTECTED]
> Sent: 4/12/04 11:01 AM
> Sub
Aha, that would explain it! I guess my next question would have to
be...is the the appropriate list to inquire as to the stability of the
current Alpha builds? My app is pretty timid in its use of SQL, mostly
SELECTS and a smattering of UPDATES and INSERTS on single tables. But
on the other
You will need to be using MySQL 4.1.x in order to perform sub-selects.
-Original Message-
From: Steve Pugh
To: [EMAIL PROTECTED]
Sent: 4/12/04 11:01 AM
Subject: Multiple SELECTs in one query
Hello, all!
I am porting my Visual Basic app over from MSDE to MySQL, and things so
far are
Hello, all!
I am porting my Visual Basic app over from MSDE to MySQL, and things so
far are going quite well. I've found most of the "gotcha" differences
in how I need to structure my queries, but I am having trouble with one
in particular.
In my original code, I could use one query to get a
corereader contains safeguards to prevent updates,
but its design helps quick development of queries
such as yours. you can do a multiple join with
multiple selects just by pointing and clicking to
try out various ideas.
it's free at http://corereader.com/
it installs at the novice
At 15:54 +0200 10/5/02, Mirza wrote:
>Hi,
>
>i am inserting data in a mysql table like this:
>INSERT INTO mytable1
>(bu_main_id)
> SELECT main_id FROM mytable2
> WHERE username=\"$username\"
>
>that's ok.
>
>but now i would like to insert 2 values (bu_main_id and
Hi,
i am inserting data in a mysql table like this:
INSERT INTO mytable1
(bu_main_id)
SELECT main_id FROM mytable2
WHERE username=\"$username\"
that's ok.
but now i would like to insert 2 values (bu_main_id and status), and i
would like to know, is it possible t
I'm using the Tangram perl module, which makes MySQL act like an object
oriented database.
My database has a table of stories (STORY). Each STORY is written by an
AUTHOR. So, the database design is like this:
CREATE TABLE story (
id int PRIMARY KEY NOT NULL,
title VARCHAR(80),
Hi
I am using an application (excel) that sends sql requests and fills the
excel sheet.
When i issue an update statements, the update doesnt return data to my
program (*.vba) in excel, so it hangs.
To bypass the problem I was told to use the following ansi compliant sql
statement "SET NOCOUNT ON"
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