MYSQL :: Paging With Only Next/previous

Paging Mysql + PHP
I have a big db and i want to use the paging option.
For a couple of weeks now i've been searching the forums trying to find a script that works but untill now i haven't. Even when copying the script litterally I get loads of errors. I'm a noob so i don't really know what i'm doing.
Anyways, I was hoping the someone could help me and I heard this is the place to be.

Paging Records
I frequently find myself doing in ASP is displaying paged data, from a database, on a webpage, by using the ADO Recordset object. I've not seen an obvious way to do this in PHP with data from a MySQL database, there doesn't seem to be any similar Recordset type object here.
Can anyone point me to a good tutorial on the subject, or perhaps giv an insight into how such functionality is handle on a web page using PHP with data from MySQL?

Setting Up SQL Statement For PHP Paging
Having a problem preparing my data for PHP paging. I have two tables I am working with (tbl_biz and tbl_addy). tbl_biz has a one to many relationship with tbl_addy. tbl_biz stores all the business names and common fields that would be shared by all locations.

The primary key is bizID. While tbl_addyhas all the specific addressed for each business. With the primary key being addyID and foreign key being bizID. I currently have a nested loop with two seperate SQL statements to loop thru:

(first loop)
Find all businesses within a specific sub-Category

then

(second loop)
Find all locations for each specific business name (one to many).

The set up I have now works for displaying the data. The problem I am running into is actually being able to count how many records total were returned. Do I have to run another query somewhere that joins the two tables to be able to count the total amount of businesses found in order to prepare for my paging? Code:

Recordset Paging - Putting It All Together
I have just created a library database which includes 8084 books, publications, periodicals, etc. My client would like to see this database searchable in various ways which I am now able to do all by myself (slow learner) but I'm now to the point where I'm trying to put all the bits and pieces together for a good recordset paging system.

I understand that I will probably first use mysql_num_rows to retrieve the number of rows that will be resulted from the search. Then I think I have to use LIMIT to specify how many rows to display on each page of results (lets say 10).

I can use the offset with LIMIT so that my first query would be to select the first 10 (ie. LIMIT 0, 10) then another to select the next 10 (ie. LIMIT 11, 10)... but with 8084 records how will I know how many queries to build?

And how does one create the links where it shows how many result pages there will be on a query? For example this site uses exactly what I'm looking to do with each thread... it shows how many pages there are and they are linked to the next page, x of y pages, etc.

Is there something out there that will help me put this all together? Could someone kindly give me a kick-start?

Recordset Paging With MySQL & ASP Using LIMIT
I have an asp page which I want to display 10 records with a
'Previous' and 'Next' link underneath for navigating through the rest
of the recordset.

I have the page displaying the first 10 records and the links. The
links work, but the data does not change.

How can I adjust the SQL so that the code re-runs the SQL ? Is there a
way to override the LIMIT or change the way it is written ??

Code:

Paging Using LIMIT To Get Last X Amount Of Records
I'm using ASP & MySQL Server 5.0. I have currently got my paging to work by using the LIMIT command in my SQL. I can use this for my buttons FIRST, NEXT & PREVIOUS but I'm stuck at how to retrieve the last x amount of records as I don't know how many records there are in total unless I run a seperate SQL which I would prefer not to.

I've read other forums & they suggest using ORDER by xx DESC but I'm a bit unsure.

MySQL Limit Offsets As A Variable, Or Better Paging Technique
I'm trying to figure out how to use LIMIT offset variables but it looks like MySql does not support that yet?

Example
SELECT * FROM User LIMIT (@PageNumber * @PageSize), @PageSize;

Is there any better technique to paging (on the database side, not on an application level)?

Select Previous And Next Id After Id=# ?

For a gallery I'm trying to query for a picture by its id and also get some images before and after that id (according to current sort) are there references like DOM previousNode or stuff like that to use in the WHERE statement? Or how could I do this?

Currently I have: ($picId is a php variable)

'(SELECT id, picUri, picUriSmall FROM pictures WHERE id < '.$picId.' ORDER BY id DESC LIMIT 2)
UNION (SELECT id, picUri, picUriSmall FROM pictures WHERE id = '.$picId.')
UNION (SELECT id, picUri, picUriSmall FROM pictures WHERE id > '.$picId.' LIMIT 2)'
This works but doesn't seem to be the best way. I want to be able to have it working for other sorts than by id. And the two first images gotten by this query will be in reversed order (can be fixed in php).

Is there a way to ask for my picIDs position in a query and then use another query to make the LIMIT 10,14 if my image was in position 12?

Previous To Last With A Certain WHERE Condition
How do i fetch the previous row record with the same WHERE when the last record has only a lately date.

for example

field CConsorcio CRubro ImporteA FechaA

1 105 1000 2006-05-10
2 110 30 2006-05-12
5 105 300 2006-05-13
4 104 600 2006-05-14
2 103 800 2006-05-15

the WHERE CConsorcio=2
the last record: 2,103,800,2006-05-15
and i want to select the row: 2,110,30,2006-05-12

Using Data From Previous Row
I only want to select the current row if a field in the previous row is not null.

Is it possible to write such a query?

Previous Record
I need to get a previous record from database - i need to retrieve records which differs from the previous one about 5s example:

select eventDate,previousEventDate,eventDate-previousEventDate as delta from events having delta<5 order by eventDate;

eventDate is normal column from table

previousEventDate is an "alias" for the previous date ... how can I write it in SQL?
Please help. I can use SELECT as subquery, but it would be probably really slow, the table will have 100000s maybe milions of records soon.

Previous Row Comparison
I have a table in this format:

Column A | Column B
1 | 2
1 | 3
1 | 4
2 | 5
.....
.....

What I want to do is something like this:

If in Column A there is a change in the number i.e. from the above table there were many 1s which transitioned into a 2. I want to record this change. I want to extract these two rows into another table. How can I make this possible?

Get Next And Previous Records
Our website has a portfolio database which uses a column entitled 'list_order' to set the order of how we want the projects to display in a list. Each project has a link to click into it to see the full details of the project.

Inside this details page we would like to add a View Previous Project and View Next Project link which would allow the user to navigate through our projects. The problem is that we are using an order set by 'list_order' and not an auto incremented column.

How would I setup the Query to grab the previous and next rows no matter which project the user clicked on? For example, our database has these records:

id - list_order
102 - 100
89 - 200
7 - 250
30 - 300
97 - 400
20 - 500
62 - 600
88 - 650
103 - 700
85 - 800
112 - 900
95 - 1000

So, if someone clicked into id 97, we'd need a query that would grab id numbers 30 and 20 for the previous and next id to create the links.

ID Of Previous Insert
Im thinking i need a transaction here. I want to insert a record into a table, which has an autoincrement field as the primary id. Then use this id to insert into another table. In the time between the first insert and then getting the id, couldnt there possibly be another user that causes an insert and hence the id the first user gets back isnt correct ?transactions to the rescue ?

Subtract Previous Value.
I'm trying to get one column of numbers to subtract from another column and to keep a running total. Column A is a dollar amount from an invoice. Column B starts out with an opening amount ($10,000) and I want to have Column A to subtract from that.
Code:

COLUMN A--------COLUMN B
$0.00 $10,000
$1000 $9,000
$500 $8,500
$2000 $6,500

Get Previous And Next ID Of Current Record
I want do create a "Previous" and a "Next" link, all I have is the ID of the current record. Is there a good way to get the previous and next id of a record with a single SQL Query?

example:

ID's: 4,10,7,9,13

I open my page and show all details from the record with the ID 7, now I want to create the links and I need the previous and the next ID, 10 and 9.

I could make a query that returns only the ID's and loop through the recordset till i have my ID's but that's such an ugly solution, not to mention the performance issues.

How To Avoid Previous Results
I want to omit all results(id) from the first query in 2nd query , without using sub query...

Phase Previous And Next Record
I want do create a "Previous" and a "Next" link, all I have is the ID of the current record. Is there a good way to get the previous and next id of a record with a single SQL Query? example:

ID's: 4,10,7,9,13

I open my page and show all details from the record with the ID 7, now I want to create the links and I need the previous and the next ID, 10 and 9.

I could make a query that returns only the ID's and loop through the recordset till i have my ID's but that's such an ugly solution, not to mention the performance issues.

Previous And Next Record Delimma
I have a main page that has a query to get all my clients in alphabetical order.

"SELECT * FROM clients ORDER BY cname ASC"

This obviously mixes up their IDs. So when I click on a client's name "Goofy" (id = 6), I need the next client "Mickey Mouse" (id = 2), and "Donald Duck" (id = 9) to be the previous client.

And I would prefer this to happen on the same page where it displays my client's details rather than have to put those vars in the URL.

To get my client, it's simply:

$client = $_GET['c'];
"SELECT * FROM clients WHERE clientid = '".$client."'"

Selecting Item From Previous Row
Is it possible to get an entry from a previous row in a select statement?

Getting Next, Previous Record After INSERT
When I insert a record in a given index order I want to be able to traverse to the previous or next record of that index order, before or after the one I inserted. So for example if I insert a record with an address of "20 Heather Court" using an address index order, I want to be able to push a Next button (on a Web HTML form) to go to the record corresponding to "21 Heather Court" or, if I press the Previous button I
I want to be able to go the record corresponding to "19 Heather Court". Assuming of course that both the Next and Previous records exist before I insert "20 Heather Court".

If I change the index order to customer first name and insert a new record for a customer named "Harry" I then want to be able to push the Next button and see the record for a customer named "Jan" or if I push the Previous button I likewise want to pull up the record for a customer
named "Garry". Assuming that the records for Jan and Garry already existed before I inserted the one for Harry and that they became the Next and Previous records with respect to Harry's after the insertion.

Using an auto increment field does no good because every time I change the index order any kind of sequential relationship between the values in the auto increment field gets totally messed up.

I have also tried statements like " SELECT * FROM Customers WHERE Customer_ID <349 ORDER BY `Customer_ID` ASC LIMIT 0 , 1" without success if there are 10 records before the one with a Customer_ID of 349. A LIMIT of 0,1 will start at record 0 for only 1 record. I want to pull up the record immediately preceding the one with a Customer ID of 349.

In short is there some way to tell which record is Next or Previous to one that I insert under a given index order?

Subtracting Current Row From Previous
I am trying to create a query that will subtract the current row of a column from the previous row, and if the value is negative, just return the value of the current column in the result column.  For example, if I had the table below, here are the results I would like to see:

Key  value   REQUIRED RESULT
1      12        12
2      21        9
3      3         3
4      1         1
5      67        66 .

Previous Version Coding
I am trying to load some sql into myphpadmin and whilst I believe I have a later version of 5.0 which is causing the error (as this coding is apparently up to version 5.0), can someone suggest how I go about finding the coding to use with my version?

Here are some of the errors:
CODESET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO"

Determine Previous Month
basically I need to display a list of "unpaid" statements for the previous Month, no matter what day the search/request is made on. I know MySQL has the DATE_SUB function where I can subtract 1 Month from the current date, but will that subtract the date exactly 1 month to the day ? Or will it simply give me the Month as I need ?
What happens if the search takes place on the 31st of a month (for example: July), yet the previous month only has 30 days (June). Will it roll back to the previous month correctly or think that the date is 31st June or try to roll back further until it finds another month which has 31 days ?

Choosing Name Of Table From A Previous Query
Got this working at last ...

Previous Versions Of MySQL With XAMMP
I've downloaded XAMPP for Linux 1.5.1 for use on Fedora Core 4. I notice it only has the latest version of MySQL on it. I'm working on two web sites (for different clients) and they are hosted on different shared Linux hosting servers (with PHP), each with different versions of MySQL available, i.e:

MySQL 4.0.25-standard
MySQL 3.23.52

Is it possible for me to use older versions of MySQL with XAMPP? Could I just turn off MySQL in XAMMP and just run and older version of MySQL independently of XAMMP? If I can then how would I install multiple versions of MySQL in Fedora Core 4?

Total Balance (sum Previous Row With Atual Row)
How to make a select table that give some results like this:

INCOME | OUTCOME | BALANCE
1000000 0 1000000
1000000 0 2000000
500000 0 2500000
0 1000000 1500000

Is it possible?

Getting Data Entered In The Previous Week
When a product is added to the database it has three seperate fields storing the date added in(01 - 31 format) month (January-December) and year( xxxx).

Is there anyway that I can run a mysql/php query that will just retrieve those products entered within the last xx weeks?

Compare Previous String In Resultset With Next
The code below does not work.

while(resultSet.next())
{
if (!resultSet.getString.next().equals(resultSet.getString.previous())
{
out.print("...");
}
}

Is it possible to compare previous string in a resultSet with the next string? If so, could you please show me an example.

Query To Find Data For Previous Week
I am trying to get a query that can find if a Loandate falls in last week...so basically check if loandate is between sunday or monday of last to friday or saturday of lastweek...

Any clues:

Select * from loan where last weeks sunday<Loandate>last week's saturday.

Selecting Previous And Next Rows Based On One Input
let me start by what i am doing:

SELECT msgid FROM messages WHERE uid=1;
output:
+----------------------------------+
| msgid |
+----------------------------------+
| 1588ad275a80f22e6206364abbba530a |
| 37ce77bea4481ab7ed2625055512467e |
| 4bf7e4cb13590da24625821c795eb8d7 |
| 57628792ba507161e3f73daff3c972b7 |
| 91e95b3fbe9f04467023cfe84e6ed6e2 |
| e710bb38be4f3cbd05b6db594f7e8805 |
+----------------------------------+

how would i get it so if i enter a value it will return the previous and next rows.

SOME_SQL WHERE msgid='57628792ba507161e3f73daff3c972b7' AND uid=1;
output:
+----------------------------------+
| msgid |
+----------------------------------+
| 4bf7e4cb13590da24625821c795eb8d7 |
| 57628792ba507161e3f73daff3c972b7 |
| 91e95b3fbe9f04467023cfe84e6ed6e2 |
+----------------------------------+

Get Previous And Next Records Relative To An Index Record
Suppose I have a table "product" with fields id,name,price. I want to
get a resultset of previous and current and next record when the
resultset is sorted by id and id=10. The table data is shown in the
following:

id Name Price
1 : :
5 : :<--------------previous record
10 : :<--------------id=10
12 : :<--------------next record
14 : :

How do I write the sql statement if I do not know 5 and 12 are the
previous and next id respectively?

How To Insert New Records Based On Previous Record Values?
I have
TABLE:

year
value

It has for example,

year, code, vlaue
2007, 33, 4883
2006, 33, 4883
2007, 32, 4883
2006, 32, 4883
2008, 31, 4883
2007, 31, 4883
2006, 31, 4883

I want to insert new records for for 2008 for all codes that do not already have a record for 2008 and increase the value for the 2008 record by 3%.

My several attempts have led to this but which does not work.

UPDATE TABLE a
SET a.value = b.value * 1.05
WHERE b.year = 2007
AND code NOT IN
(SELECT code
FROM TABLE b
WHERE year =2008
AND value !=0)

Update Query Fails In Previous MySQL Version
The following query runs fine on my development server (v4.0.17):

"update user inner join events on user.username = events.username
set user.LastMessageDate = '$current_time'
where events.text_sent=0 and events.to_mobile >0 and events.GMT_event_send_time<='$send_time'"

but fails on my production server running v3.23.56.

Anyone any ideas why it doesn't run and what I need to do to fix it?

Mysql Is Giving The Previous Month, Not This Month, Strange!
PHP Code:

$myquery = @mysql_query("select year(sendon) as yr, month(sendon) as mth, count(*) as hits from ebook_user group by yr, mth");
    while ($myrow = mysql_fetch_array($myquery)) {
    $mymonth =  $myrow['mth'];
    $myyear =  $myrow['yr'];
    $myhits = $myrow['hits'];
    print '<td bgcolor="#E7E7E5">'.date("M", mktime(0, 0, 0, $mymonth, 0, $myyear)).' '.$myyear.' </td><td bgcolor="#E7E7E5"> '.$myhits.'</td>'
    }

The above code is printing the previous month instead of current month ... can any one help?