MYSQL :: Restricting The Number Of Rows

Get Number Of Rows Above A Row
I have one table with a some user info, and a column with the users points. I would like to fetch the user data and sonehow calculate in which place that user is. Basically, the number of users that has more points than the user.

An exampel of the table and data:

+----+---------+--------+
| id | name | points |
+----+---------+--------+
| 1 | chris | 1000 |
| 2 | john | 900 |
| 3 | jeff | 800 |
| 4 | jay | 700 |
| 5 | michael | 600 |
| 6 | eric | 500 |
| 7 | stuart | 400 |
+----+---------+--------+

And an example of the data set I would like:

+----+---------+--------+----------+
| id | name | points | position |
+----+---------+--------+----------+
| 1 | chris | 1000 | 1 |
| 3 | jeff | 800 | 3 |
| 6 | eric | 500 | 6 |
+----+---------+--------+----------+

I'm not sure how to do this in one query, and I'm not even sure that it's possible, but if it is I sure would like to know how.

I'm using MySQL 4.1.16.

Getting The Number Of Rows.
How could I get mysql to just print the number of rows for this query, because this is currently return hundreds of rows. I just want one row.

I want to know how many duplicate first names there is.

CODESELECT COUNT(*) as total FROM members WHERE first!='' GROUP BY first HAVING total>1

Number Of Rows
i have got a script that log all downloads (daily) in a database.
I would like to know how to query that database, to get the number of records per month.
my records look like this
date ip
2006-01-01 200.1.157.11
2006-01-01 192.168.10.3
2006-02-05 198.10.10.2
etc

needed output
01 2
02 1

Get Number Of Rows
I'm developing a hr system which will display Staff that are currently in the financial year(regardless of resigned or not resigned). Our financial year is from Oct - Sep (Oct 2006 - Sep 2007) For staff that have not resigned (@ the pt of query), the dateTerminated field is NULL.

I have a database that stores resignation date and startdate (both columns are date type). I tried with the following query but was not successful. PLease help.

Select * from (select name,dateTerminated,dept from user_info,hr_users where user_info.id=hr_users.sn
or dateTerminated is null
AND (year(dateTerminated)<=2007
AND year(dateTerminated)>=8)
)as table2 dunno how to continue ???
order by table2.name ASC

Number Of Rows
Is there a quick query (without just asking to query the entire database) that will return the number of rows in a given table?
I know I can do SELECT * FROM table but I don't really care about the data, I just want to know how many entries there are.

PHP - Can't Add Rows Past A Certain Id Number (127)
I've got a table which has about 70 rows in. The rows' ids start at 1, have a large gap in the middle, then range up to 127. If I try to add a new row with an autoindexed new id, I get the following MySQL error: duplicate entry '127' for key 1.

If I add a new row with a lower id, e.g. 6, there are no issues - it works fine. If I delete row 127, or give it a lower number, I can then add a new row as normal, but then the error happens again for all subsequent rows.

Everything was working fine with the page that adds new rows until it got to 127. Is this some kind of magic number I don't know about?

Calculate Number Of Rows
From the packet data returned from a query, where in the packet data are the
bytes signifying the number of rows returned?

Table: Max Number Of Rows
In a table what is the limit to the number of rows that make it up?
Is the only limitation HardDrive space?

Maximum Number Of Rows
I am looking for information on the total number rows that can be used in an InnoDB,if there is even such a limit.I am not a DBA, so the information on mysql is a bit cryptic.

Number Of Rows In Table
Is there a query which returns the number of rows in a table without using a "SELECT..." followed by recordset.RowCount?

Retrieve Number Of Rows
I've got a large table with a lot of entries. only two fields, one's the key (which auto incs) and the other's a text field...if I want to just retrieve the number of rows in the table, what's the best way to do this?I know I could tell mysql to sort the table by the key row and then take the first one, but wouldn't this make it analyze the entire table (which would waste resources, especially considering that this table will have thousands and thousands of entries)? what's a better way to do it?

Number Of Table Rows
I have tried to answer this question by using Google but my search didn't bear any fruits, so to speak.

I am in the middle of designing my db and i have just thought that in some of my tables i think i will have 1000s of entries [rows] and if my web application with a db backend is successful it can turn into millions of rows [wishful] - so i wanted to know is there a limit in the number of rows for a table? I think not, but how will performance be effected?I am using a MySQL database, I am using a linux server not sure if this matters but microsft and i dont get along.

Actual Number Of Rows
I have a query in PHP with a LIMIT statement. Is there an easy way to get the actual number of rows (like a have no LIMIT in it)?

Limit Number Of Rows
I was wondering how can I limit the number of rows used in a table.
For example if we wanna create a table named table1 having only 7 rows.

JDBC Number Rows
After you have done a .executeQuery() and returned that to a ResultSet how do you get the number of rows returned?
I have tried using getFetchSize() but that does not help me.

Counting Number Of Rows
Can anyone come up with a novel way of counting the number of rows in a table that contain no NULL values in the columns that each row contains?
Each row contains 200+ columns, so doing a "count" on each column, and then selecting the smallest value is not very practical.

Retrive A Limit Number Of Rows
How can I make the following query :
I would like to retreive only the number of rows while sum(field1) < 20. Is this possible?
If my table have the following values :

1
4
6
8
5

It only retrieves the first 4 rows. sum(field1)=19

Limiting Number Of Rows In A Table
I'm trying to implement a basic log in a table. Instead of writing to a text
file on the server, I want to insert entries into a 'log' table. However, I
want to limit this table to only have the last 500 rows or so. How do I do
this?

Here's my pseudocode, but it seems as if there would be a better way:

logEntry($message){
insert message into table
get number of rows in table
if (numrows > 500){
delete from table where ((numrows - id) > 500)
}
}

Is that right?

What Is The Max Number Of Rows A MYSQL Table Can Contain
What is the max number of rows a MYSQL table can contain.

Total Number Of Rows Affected
in Mysql Control Center, how can I modify the Total Number of Rows Affected in a query??
in fact I want to disply all the records of the table but I get only 1000 rows, is it possible to do that and how?

Count Number Of Rows Returned?
this is my connect and everything code:

<?php // connect to the mysql database server.
mysql_connect ($dbhost, $dbusername, $dbuserpass);
mysql_select_db($dbname) or die(mysql_error());
$query = "SELECT DISTINCT category FROM $tuttable";
$result = mysql_query($query) or die(mysql_error());
while ($row = mysql_fetch_array($result))
{
echo ($row['category']." | ");
}
echo count($row);
?>

Notice "echo count($row);" How do i get this to work properly. It only returns one, because there is only 1 that it is working on. I want to return the count of all the rows that fit that query.

Counting Number Of Rows Returned
I want to count the number of rows returned when I execute an SQL query. At the moment I am selecting them all and cycling through them:

$count=0;
$query = "SELECT * FROM swe_picgal WHERE cat="".$cat.""";
if ($mysql_result = mysql_query($query, $linkdb)) {
if (ExecuteQuery($linkdb, $result, $query)) {
while ($row = NextRow($result)) {
$count++;
}}}
print('Number of rows: '.$count.'');

Surely there is an easier way? I assumer mySQL will have a built in counting function?

Retrive Rows Affected Number
I'm trying to migrate some MS Sql Stored Procedures in MySql. Here is the MSSQL stored procedure.

CREATE PROCEDURE CB_UserLogin
(
    @User      nvarchar(50),
    @Pass   nvarchar(50),
    @ID_Util int OUTPUT
)
AS

SELECT
    @ID_Util = fID_Util

FROM
    tblUtiliz

WHERE
    fUtilizator = @User
  AND
    fParola = @Pass

IF @@Rowcount < 1
SELECT
    @ID_Util = 0

Unions -- Number Of Rows Returned
I have this query:

SELECTcount(*)
FROMpa_album
WHEREcreator_id = 1001
UNION
SELECTcount(*)
FROMmb_post_tbl
WHEREauthor_id = 1001
UNION
SELECTcount(*)
FROMmb_post_tbl
WHEREupdated_person_id = 1001
UNION
SELECTcount(*)
FROMmb_thread_tbl
WHEREauthor_id = 1001
UNION
SELECTcount(*)
FROMevent_tbl
WHEREcreator_id = 1001

Which checks for a specific value in the foreign keys of a few tables. I would expect to see 5 rows in the results of this query, but I do not get 5-- I get a row for each SELECT that has a count > 0, but then I get only one row returned for all tables that have a count = 0. So if there is only one table that has a count > 0, then I get two rows-- value 0, and value 1.

Counting Number Of Valid Rows
We have many kinds of advertisers in our web service:
1.private
2. companies, of which some are members of local enterpreneur community
3. non-profitable communities

Company advertisers can select also a "line of business" while for others
its unavailable. We have a menu where we want to put all the lines of
business in alphabetical order WITH the information, how many companies
(that are ALSO members of local enterpreneur community) are in that line of
business. I made the query following some model. It looked like working,
but now I noticed it doesn't right results always:

SELECT business_lines.*,
IF(seller_id <> 'NULL' AND seller_type='company' AND
seller_membership="LocalEnt", count( * ), 0) as nr_of sellers_in_this_line
FROM business_lines
LEFT OUTER JOIN sellers ON line_id=seller_line_id
GROUP BY line_id
ORDER BY line_name asc

So I suspect that if not ALL companies int certain line are members, that
line results to enpty line. Is that true and how to fix this?

Getting Number Of Rows From Left Join Table
PHP

SELECT bulletin.id AS bid, bulletin.bulletinname AS bname, bulletin.bulletindesc AS bdesc, bulletin_post.id AS postid, DATE_FORMAT(bulletin_post.postingtime,'%M %d, %Y %l:%i%p') AS postdate, bulletin_post.bulletintitle AS ptitle, member.screenname AS mname, member.id AS posterid FROM bulletin LEFT OUTER JOIN bulletin_post ON bulletin.id = bulletin_post.bulletinid AND bulletin_post.postingtime = (SELECT MAX(postingtime) FROM bulletin_post WHERE bulletinid = bid) LEFT JOIN member ON member.id = bulletin_post.memberid WHERE bulletin.active = 1 ORDER BY bulletin.bulletinname ASC

My question is how would I get the count of rows if any from the bulletin_post table?

Trying To Count The Number Of Rows In A Result Set After Query
The user fills out this form to sign up to the website, the form checks the database to see if the username has already been taken with the code:

$conn = mysql_connect("localhost:3306", "root", "********")
                                    or die ("Error With Connection");
        echo("connected<br><br>");
        $db_sel = mysql_select_db("game",$conn)
                                    or die ("Error With Database");
        $check = "select * from users where 'username' = '$username'";
        $db_sel = mysql_query($check,$conn)
                or die (mysql_error());

Maximum Number Of Rows Mysql Can Retrive
Basically I want to know the max rows mysql returns for a select. Heard that MSsql would retrive about 100 rows.

Return A Count Of Number Of Rows Before Desired Row.
Anyone know how? find_in_set doesn't seem to be able to do what I want since I am not searching through an array but am actually running a query.

What I really want is to be able to select all until something = something. I've searched the realm of google but cannot come up with anything useful, and so I am wondering if maybe I don't know the right words to be looking for.

Selecting A MINIMUM And MAXIMUM Number Of Rows.
I have a problem where I want to get no more than 10 (LIMIT) of the newest records from a table that are within a month, but I want to get at MINIMUM 3 records, all using SQL.

I can do :

-------------------
SELECT *
FROM updates
WHERE date_of_update
BETWEEN DATE_SUB( CURDATE( ) , INTERVAL 1
MONTH ) AND CURDATE( )
ORDER BY date_of_update DESC
LIMIT 0 , 10
-------------------

To limit it to the 10 updates no older than a month, but if there are no updates within a month I get nothing.

So I would like to do something like :

-------------------
SELECT *
FROM updates
WHERE ROWNUM() < 3 OR ((date_of_update
BETWEEN DATE_SUB( CURDATE( ) , INTERVAL 1
MONTH ) AND CURDATE( )) AND update_id IN (
SELECT *
FROM updates
ORDER BY date_of_update DESC
LIMIT 0, 10
))
-------------------

This code will take the 10 most recent updates and then starts pulling them out as long as the number of rows is less less than 3 or the update is within the date range and one of the 10 recent updates. The problem is that mySQL appears not to have any kind of rownum function.

Limit is a nice substitute except it only works for setting an upper bound, not a lower bound number of records.

Administrator Rows Vs Actual Number Of Records
I imported some table (about 1500 records) using "LOAD DATA LOCAL
INFILE..." (command line console). No warnings, no skipped, no deletes
- all the recored are written to be imported.

However, in MySQL Administrator UI tool I see completely different
number in the "Rows" column. Making a SELECT query shows that the
actual number of records in the table is the correct one (the same
number as in text file table). Command line SHOW TABLE STATUS FROM ...
doesn't show any of these numbers.

I would expect that the "Rows" column doesn't show the actual number of
recored. But, the information about of 100 enteries table is shown
correctly (rows=records=100).

Looping Through MySQL To Change The Id (using PHP) To Equal The Number Of Rows
When deleting a row from the database, that id is now missing.
So what I'm trying to do is update in a loop (maybe an sql loop if
there is one) of all of the id numbers - sort of like renaming them.
It did partly work because all the id's were set to 22. Thats because
there was 22 rows.

Here's the code I used:

Simple Sql Select Does Not Return The Correct Number Of Rows
I have 2668 rows in my table.

select count(distinct ID) from mytable;

gives the following results: 2668

However, when I use:

select ID from uniprot;

Limit Number Of Rows Or Characters Returned In A Text Field
I understand you can limit the rows of a recordset, but can you somehow tell a query to limit the rows (or characters) returned within just a text field?

I have a page that returns abstracts of many articles and I want to truncate the description for each to just 200 characters. Is there a way to accomplish this with MySQL?

Restricting Records
I run a hobby-based hall of fame. At the moment people send their stats
to me and I manually update the database, run the queries, and convert the
results to .pdf which is then put online.

I'm in the process of automating the procedure by changing to a .php website
with the Hall of Fame powered by a mysql database, but what I'm trying to
figure out is if each user has a unique username and password, is it
possible for the database to only allow them to update the records in table
X, Y and Z which their own username / password created (ie, they can't mess
with other players entries)?

I think I could do it by giving each user their own set of mini tables, but
that would make the queries horrendously complicated

Restricting Results
I have here what should be a no brainer, and perhaps it is the lack of sleep and the long hours today, but I need someone to confirm for me that my logic with the following is on target.

If I want to find all records that were dated either '0', or no older than (approx) 6 months in the past, then the following condition should work for that, correct?

UNIX_TIMESTAMP() - 6*30*24*60*60 > table.dated

The field 'dated' is of course a UNIX timestamp integer field.

Restricting Data In A Field
I am attempting to restrict a field in one of my tables to only allow a Y or N for repsonses. I am very new with MySQL and the only help I found was in my book from college that gave me the following command:

ALTER TABLE TECHNICIAN
ADD CHECK (TECH_STATUS IN ('Y','N') );

The server will accept the command, but will still allow data to be entered incorrectly into the row. Not sure if the command works with MySQL or not.

Restricting Access To Tables
Does mysql allow you to restrict users access to spcecific tables while
allowing access to others. I cant seem to find anything in the manual
related to this.

Restricting User Access
Is there any way that I can restrict users' access to rows of a given table based on the value of a particular field? I can imagine how to do it when selecting records but I would like to it "more generally".

Restricting Table Size
Say I want to make sure that a table can not have more than 100 records
- how could I do this from MYSQl or PHP.

Restricting Access To Databases
I have phpMyAdmin installed on my server and a client of mine wants to be able to edit his website's database to make minor changes. Is it possible to give him a unique user name and password so that he only has access to his database and none of the other ones on my server?

Using A Limit Clause, But Return The Number Of Rows Of The Query Without The Limit
I have heard of a cool feature that mysql provides a way to return the number of rows of an sql statement that contains a LIMIT as if the LIMIT had not been there.

I search the mysql manual, but could not find anything.

How To Get The Total Number Of Rows With A Query "limit" ?
I would like to paginate the results of a query on several pages. So I
use a query with a limit X offset Y to display X results on a page,
ok.

But for the first page, I need to run the same query with a count(*)
to know how many pages I will get (number total of rows/ X).

The problem is my query is very slow (maybe 5s) because there is much
worch to do, and on the first page, I need to run this query twice
(not exactly, but ...) so the page is very very slow to load.

My question is : is there a function to get the total number of rows
even on a query with "limit" ? Or what could I do else?

Searching For Rows That Depend On Other Rows In Some Fashion...
Maybe this is a very stupid question. I'll try anayway. I'm using
MySQL 3.23.52 on RedHat 8.0.

I have a very big table (several millions of rows). Each entry
actually constitute a word in a big text. Among other fields we have
an ID for each word which represents the postition in the text. Now I
want to search for short phrases.

For example "welcome to sweden". This means i want to find all
occurences of the word "welcome" with ID x, where we have the word
"to" with ID x+1 and the word "sweden" with ID x+2. I've tried doing
this recursively with temporary tables - but a find myself hitting a
wall as i'm not allowed to refer to 2 different temporary tables in
the same query...

Resorting to another type of data strucutre, full text index etc.. is
unfortunately not an option. We only need this as an add on feature if
we can do it. We believe that indexes, data structures etc.. are near
optimal as is.

Please use my email for further conversion since I'm not a frequent
usenet reader.