RE: quick mysql question
- From: "DaShiell, Jude T. CIV NAVAIR 1490, 1, 26" <jude.dashiell@xxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Wed, 8 Apr 2009 07:57:04 -0400
If it's a Linux box they're on, a command like set pager less inside of
mysql will use less utility to display whatever goes up on the screen and
the user will be able not only to see all of the information, they'll be
able to do their own independent searches on that information from inside of
less using the (/) command followed by a search term. I particularly like
using that when working with mysql and getting output since that way there's
no question where the output is going.
Rot47: <;F56]52D9:6==@?2GJ]>:=>
-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Alex Hall
Sent: Wednesday, April 08, 2009 7:47
To: programmingblind@xxxxxxxxxxxxx
Subject: Re: quick mysql question
Okay. How would I use this to control which records are displayed? Say I
have records 1-8, and the php page displays the first two, then the next
two, and so on, moving to the next two every time a "next" button is
clicked. How would the page know which two (or however many it was set to
display per page) to get? What if the user wants to go back? Does this make
sense?
Sorry if this comes out looking strange, I think my bn's ueb translator is
going crazy.
Have a great day,
Alex
> ----- Original Message -----
>From: "Octavian Rasnita" <orasnita@xxxxxxxxx
>To: <programmingblind@xxxxxxxxxxxxx
>Date sent: Wed, 8 Apr 2009 08:28:16 +0300
>Subject: Re: quick mysql question
>The indexes in a table are used for creating relations with the
records from
>other tables, and it would be a total mess if those indexes would
change.
>If you need to find how many records there are in a table, you
can simply
>count them using:
>select count(*) from table_name;
>Or you can put some conditions like:
>select count(*) from table_name where column1=123 and
another_column="abc"
>and another_one like '%bla%';
>--
>Octavian
>----- Original Message -----
>From: "Alex Hall" <mehgcap@xxxxxxx
>To: <programmingblind@xxxxxxxxxxxxx
>Sent: Wednesday, April 08, 2009 6:21 AM
>Subject: Re: quick mysql question
>> Okay, so the numbering is lost if you delete. Is there a more
robust way
>> of numbering, so that you would have gotten:
>> 1, abc'
>> 2, 'ghi'
>> 3, 'kno'
>> instead? I need the index of each record to always be sequential
so that I
>> can know how many total records there are and also know which
ones I have
>> used in the displaying of all of them.
>> Have a great day,
>> Alex
>>> ----- Original Message -----
>>>From: "R. Haynie" <rhaynie@xxxxxxxxxxx
>>>To: programmingblind@xxxxxxxxxxxxx
>>>Date sent: Tue, 07 Apr 2009 22:51:24 -0400
>>>Subject: Re: quick mysql question
>>>An example is worth a thousand words...
>>>create table tbl1 (fld1 INTEGER AUTO_INCREMENT,
>>>fld2 char(3),
>>>PRIMARY KEY (fld1));
>>>insert into tbl1 (fld2) values ('abc'), ('def'), ('ghi'),
>> ('jkl');
>>>select * from tbl1;
>>>-- gives you:
>>>1, 'abc'
>>>2, 'def'
>>>3, 'ghi'
>>>4, 'jkl'
>>>delete from tbl1 where fld1 in (2, 4);
>>>insert into tbl1 (fld2) values ('mno');
>>>select * from tbl1;
>>>-- gives you:
>>>1, 'abc'
>>>3, 'ghi'
>>>5, 'mno'
>>>HTH.
>>>-Rodney
>>>Alex Hall wrote:
>>>> Hi all,
>>>> If I have a table of records and one column is an autoincrement,
>> what
>>>> happens when I delete a record? I want to use the autoincrement
>> as an
>>>> index, so records 1, 2, 3, and 4 exist where 1-4 are the indexes
>> of
>>>> the records, If you delete record 3, do you then have records 1,
>> 2,
>>>> and 3, or 1, 2, and 4? If it is the second case, is there a
>> better way
>>>> to have an index of each record? I need to know how many
>> recordsI am
>>>> using on a page (it is sort of a photo viewer so I need to know
>> which
>>>> pictures are being shown and how many more there are) and how
>> many
>>>> total there are to go. Thanks.
>>>> Have a great day,
>>>> Alex
>>>> __________
>>>> View the list's information and change your settings at
>>>> //www.freelists.org/list/programmingblind
>>>__________
>>>View the list's information and change your settings at
>>>//www.freelists.org/list/programmingblind
>> __________
>> View the list's information and change your settings at
>> //www.freelists.org/list/programmingblind
>__________
>View the list's information and change your settings at
>//www.freelists.org/list/programmingblind
__________
View the list's information and change your settings at
//www.freelists.org/list/programmingblind
Other related posts:
