I am new in CodeIgniter, I want to count all rows from database table but i use limit in query and i want all count without use limit how can i do ?
my code is below :
$sql = " SELECT intGlCode,fkCategoryGlCode,'C' as acctyp,varEmail,varContactNo as phone,CONCAT(varFirstName,' ',varLastName) as name,dtCreateDate,chrStatus,varMessage as message
FROM " . DB_PREFIX . "Customer WHERE varEmail='$userEmail'
UNION
SELECT intGlCode,'' as fkCategoryGlCode,'P' as acctyp,varEmail,varPhoneNo as phone,varName as name,dtCreateDate,chrStatus,txtDescription as message FROM
" . DB_PREFIX . "Power WHERE varEmail='$userEmail' ORDER BY intGlCode DESC
LIMIT $start, $per_page ";
$query = $this->db->query($sql)
i use limit for pagination but i want to get all record from table.
You can add new column in both above and below UNION queries. It will be like below.
select (select count(*) from your_query), your_columns from query_above_union
UNION
select (select count(*) from your_query), your_columns from query_below_union
your_query = your full actual query your are using currently.
Although I am not sure about Codeigniter. But sure about SQl.
* If you count all records with all data including limit, than you can use this code. please check it. I hope it will works for you.*
$countsql = " SELECT intGlCode,fkCategoryGlCode,'C' as acctyp,varEmail,varContactNo as phone,CONCAT(varFirstName,' ',varLastName) as name,dtCreateDate,chrStatus,varMessage as message
FROM " . DB_PREFIX . "Customer WHERE varEmail='$userEmail'
UNION
SELECT intGlCode,'' as fkCategoryGlCode,'P' as acctyp,varEmail,varPhoneNo as phone,varName as name,dtCreateDate,chrStatus,txtDescription as message FROM
" . DB_PREFIX . "Power WHERE varEmail='$userEmail' ORDER BY intGlCode DESC";
$sql = $countsql. " LIMIT $start, $per_page";
$totalRecords = $this->db->query($countsql);
$result["total_rows"] = $totalRecords->num_rows();
$query = $this->db->query($sql);
$result["list"] = $query->result_array();
Related
I have a query for selecting random records with a limit of 6.
$query = $this->pdo->prepare("SELECT * FROM `" . $this->table . "` ORDER BY rand() LIMIT " . $limit);
If I set the limit to 6, it will sometimes only show 4 records, sometimes 5.
How can I make it always show 6?
I have more than 6 records in the database.
I looked at some questions around this here but couldn't find a clear answer.
$query = $this->pdo->prepare("SELECT * FROM `" . $this->table . "` ORDER BY rand() LIMIT $limit " );
Try with :
SELECT RAND(6)
$query = $this->pdo->prepare("SELECT * FROM " . $this->table . " ORDER BY RAND(6) LIMIT " . $limit);
I would like to get data from two tables in MySQL, ordered by date.
$sql = "
SELECT
items.*, invoice.*
FROM
items
JOIN
invoice
ON
items.user_id = invoice.buyer_id
WHERE
items.user_id = '$user_id'"
LIMIT
10
ORDER BY
date;
";
Try with:
$sql = "SELECT *";
$sql .= " FROM items, invoice";
$sql .= " WHERE items.user_id = invoice.buyer_id";
$sql .= " AND items.user_id = '$user_id'";
$sql .= " ORDER BY date DESC";
$sql .= " LIMIT 10";
Also it is better if you use it as a prepared statement instead of having the variable inside the SQL query to avoid SQL injection.
In my sql table i had more then 300000 entries.
$marketname = more then 200 !
with this select i can see the last 15 entries.
$sql = "SELECT price FROM markets where market = '" . $marketname . "' order by time desc LIMIT 15,1";
$sql = "SELECT price FROM markets where market = '" . $marketname . "' order by time desc LIMIT 15,1";
and so on for the last 30, 60, 120.
$sql = "SELECT price FROM markets where market = '" . $marketname . "' order by time desc LIMIT 30,1";
$sql = "SELECT price FROM markets where market = '" . $marketname . "' order by time desc LIMIT 60,1";
But is there a combination of all, because when i show it on one page its very very slow with 200 markets!!
like..
$sql = "SELECT price FROM markets where market = '" . $marketname . "' order by time desc LIMIT 15,1 AND LIMIT 30,1 AND LIMIT 60,1 AND LIMIT 120,1";
First of all, try to not do SQL injection style SQL. Use PDO or MySQLi with prepared statements. With that in mind, do not limit your query's last part.
SELECT price FROM markets WHERE market = :marketName ORDER BY time DESC limit 100
Would query the price of the market by marketname (prep statement), order it and limit it to 100 records.
I need to have my results sorted by "ORDER BY prod_name" in my SQL statement but I cannot figure out get it to work. I tried after
$thisProduct .= " AND prod_type = 1 ORDER BY prod_name";
and also after
$thisProduct .= " AND ID = '" . mysql_real_escape_string($_GET['product']) . "' ORDER BY prod_name";
But I cannot get my results to sort correctly. Am I placing the order by in the wrong spot or did I query the DB incorrectly?
Thank you in Advance, I am still pretty new at MYSQL queries.
$thisProduct = "SELECT prod_name AS Name, days_span, CONCAT(LEFT(prodID,2),ID) AS ID, geo_targeting FROM products WHERE status = 'Active' AND vendID = ".$resort['vendID'];
if (isset($_GET['product']) AND is_numeric($_GET['product'])) {
$thisProduct .= " AND ID = '" . mysql_real_escape_string($_GET['product']) . "'";
}
else {
$thisProduct .= " AND prod_type = 1";
}
$thisProduct .= " LIMIT 1";
$getThisProduct = mysql_query($thisProduct);
if (!$getThisProduct/* OR mysql_num_rows($getThisProduct) == 0 */) {
header("HTTP/1.0 404 Not Found");
require APP_PATH . '/404.html';
die();
}
$thisProductData = mysql_fetch_assoc($getThisProduct);
You should have:
$thisProduct .= " ORDER BY prod_name";
$thisProduct .= " LIMIT 1";
(Note that the LIMIT 1 means you only get one record).
Assuming that your query is correct and you want the first product by name:
$thisProduct .= " ORDER BY prod_name LIMIT 1";
I believe it should go right before your "LIMIT 1", as in:
$thisProduct .= " ORDER BY prod_name LIMIT 1";
Insert it before the LIMIT
$thisProduct .= " ORDER BY prod_name LIMIT 1";
You can the select syntax at http://dev.mysql.com/doc/refman/5.0/en/select.html
SELECT query usually takes following form
SELECT which_all_to_select
FROM which_table/tables
WHERE criteria
ORDER BY column_name ASC/DESC;
ASC ascending order, and DESC is descending order
This orders query results by column_name specified in ORDER BY clause .
I have this query:
$relevantwords = {"one" , "two" , "three" } ;
foreach ($relevantwords as $word)
{
$query .= "SELECT * FROM delhi_items WHERE heading like '%$word%' AND id!={$entry_row['id']} AND visible=1 UNION ALL " ;
}
$query = implode( " " , explode(" " , $query , -3) ) ;
$query .= " ORDER BY time_stamp DESC LIMIT 0, 20 " ;
$result_set = mysql_query($query, $connection);
This causes several duplicates in my resultset. Is there a way to detect and remove these duplicates from the resultset ? I know I should probably try to avoid the duplicates in the first place, but I am unable to figure that out.
Also I tried distinct keyword, it didn't work (because its a loop, the same entry is fetched again and again).
Laslty I am kind of an amateur so please tell me if I am doing something fundamentally uncool with such a long sql query in a for loop.
Thanks
This is not the right way to do this query; don't use UNION ALL with several queries.
Just use one query and use an OR between the relevant WHERE clause parts. It'll select each row just once, regardless of how many bits it matches.
I would try to have one SELECT and no UNION and DISTINCT. It will probably be a faster query:
$relevantwords = {"one" , "two" , "three" } ;
$querycondition = "" ;
foreach ($relevantwords as $word)
{
$querycondition .= " heading LIKE '%$word%' OR"
}
$querycondition = substr($querycondition ,0 ,strlen($querycondition)-2 ) ;
$query = " SELECT * "
. " FROM delhi_items "
. " WHERE ( "
. $querycondition
. " ) "
. " AND id!={$entry_row['id']} "
. " AND visible=1 "
. " ORDER BY time_stamp DESC "
. " LIMIT 0, 20 " ;
$result_set = mysql_query($query, $connection);
Use DISTINCT:
SELECT DISTINCT * FROM ...
UPDATE:
Actually DISTINCT doesn't work since the un-duping would happen before the records are merged with each other in the UNION ALL.
To do what you are trying to do, you want the SELECT DISTINCT * to happen outside the union-ing of all the records.
Do the selecting and union-ing inside a derived table:
SELECT DISTINCT * FROM
(SELECT * FROM TABLE WHERE ...
UNION ALL
SELECT * FROM TABLE WHERE ...
) t
ORDER BY ...