A LEFT OUTER JOIN in that query in not necessary. An inner join should be used.
-Original Message-
From: Shiv [mailto:shiv...@gmail.com]
Sent: Saturday, May 30, 2009 10:18 PM
To: bharani kumar
Cc: mysql
Subject: Re: Left join query
Hi,
Along with tables, you should also provide
Hi,
Along with tables, you should also provide details on how they are
related. Assuming "Code" is unique in both tables and left joined on
Airport table, you can do something like this
SELECT A.Code, C.Code, A.SlNo, C.SlNo, A.Name, C.Location, A.status,
C.status, C.type
FROM Airport A
LEFT OU
Airport table
SlNoName Code AuthLocation status
1 ChennaiCHN Yes India 1
2. Hydarabed HYD Yes India 0
3 walkerWAK Yes uk1
common table
SlNoName Code
'module3'. The rows in permissions would be:
ID | USER | MODULE | ADD | MOD | DEL
1 | bob | module1| 1 | 0 | 1
2 | bob | module2| 1 | 0 | 0
But, I need to build an entry form that lists all of the modules in the modules
table and loads in the permissions fo
- Original Message -
From: "David T." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, September 17, 2004 2:33 PM
Subject: Problems with Left Join query
> I am building a database with permissions for different modules. The
> permissions table cont
On Fri, 17 Sep 2004 11:33:04 -0700 (PDT), David T. <[EMAIL PROTECTED]> wrote:
> I am building a database with permissions for different modules. The
> permissions table contains a separate row for each module/user combination,
You didn't say, but if you're using PHP you might find this of use:
h
entry form that lists all of the modules in the modules
table and loads in the permissions for that user. I was believing that I could
write a single LEFT JOIN query that would give me all the modules and
permissions in one single pass. However, when I build the query, it only
returns
Fax to:
07/10/2004 08:18 Subject: Need help with my LEFT JOIN
query...
: "Jeff Gannaway" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, July 10, 2004 5:18 PM
Subject: Need help with my LEFT JOIN query...
> I'm trying to SELECT a field (ProductID) from 'Table a' WHERE two
> corresponding fields are equal (a.PUBLISHER =
I'm trying to SELECT a field (ProductID) from 'Table a' WHERE two
corresponding fields are equal (a.PUBLISHER = b.Vendor AND a.NUMBER = b.VIN)
Table 'a' (approximately 100,000 records):
++
| ImportLiebermansStep3Add |
++
| Prod
|
| Subject: Re: optimizing left join query
|
>|
Your user_info table is not in
Your user_info table is not indexed...
(user_info.uid should have an index)
Check the manual:
http://www.mysql.com/doc/en/MySQL_indexes.html
On Tue, 2003-02-11 at 16:16, [EMAIL PROTECTED] wrote:
> Hello All,
>
> I have the following 2 tables and "LEFT join" query as fol
Hello All,
I have the following 2 tables and "LEFT join" query as follows:
mysql> describe user_lic;
+++--+-+-+---+
| Field | Type | Null | Key | Default | Extra |
+++--+-+-+---+
On Tue, 19 Nov 2002, Bill Easton wrote:
> I'd be happy to write up a short example for inclusion in the MySQL manual,
> if there were some indication from MySQL, AB, that it would be included.
I guess they will; after all it would fit perfectly into the tutorial and
would be most welcome to all r
"John Ragan" <[EMAIL PROTECTED]>
To: "Bill Easton" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, November 19, 2002 11:19 AM
Subject: Re: MySQL Left Join Query
>
> wow!
>
> that's known as "above and beyond the call of
> du
gt; select header.*, placement.*
> from header
> inner join tt
> on header.code = tt.code
> left join placement
> on tt.code = placement.code
> and tt.product = placement.product;
>
> which also gives the desired result:
> +--+--
| NULL |
|7 |7 | OVRLCKBDG |
+--+--+---+
> From: "Mark Colvin" <[EMAIL PROTECTED]>
> To: "MySQL Mailing List \(E-mail\)" <[EMAIL PROTECTED]>
> Subject: MySQL Left Join Query
> Date: Mon, 18 Nov 2002 08:05:51 -
>
&
An update to my earlier post. I'm getting a bit closer but still not there.
In the following query:
select decheader.code, decheader.height, decheader.width,
decplacement.position, decplacement.product
from decheader left join decplacement on decheader.code = decplacement.code
and
(decheader.code
I have a two table query where I want to return records from the first table
and if they have corresponding details in my second table I wish to return
those as well. A sample sql statement I am using is as follows:
select decheader.code, decheader.height, decheader.width,
decplacement.position, d
I have a two table query where I want to return records from the first table
and if they have corresponding details in my second table I wish to return
those as well. A sample sql statement I am using is as follows:
select decheader.code, decheader.height, decheader.width,
decplacement.position, d
Hola Javier,
It is difficult to tell because you did not include
the table structures, relationships, indices, etc.
But... at a first glance we is killing you query
anyways is this:
> FROM
> Bill b, Hour h
The poor db engine is probably creating a huge
temporary table with all
On Thu, 20 Jun 2002, Javier Campoamor wrote:
> Hi,
>
> I have a problem with the next query because it's too slow (>10 seconds) and
> I need to do 10 queries like this one to show a page.
>
>
>
> SELECT
> h.Hour, count(c.Amount) As NumberOfCalls, sum(c.Amount) As Amount
>
This query is driving me nuts!
I have two tables, affiliates, and advertisers. The advertisers table has an
affiliate_id field, which matches the affiliates tables' primary key. I'm
trying to write a query that will return all affiliate id's, contact names,
and the # of rows in the advertisers ta
23 matches
Mail list logo
