mysql> desc indata;
+--------------+---------------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------------+---------------------+------+-----+---------+-------+
| MDate | date | NO | PRI | NULL | |
| OPrice | double | NO | | 0 | |
| CPrice | double | NO | | 0 | |
| Volume | double | NO | | 0 | |
| ADV | bigint(20) unsigned | NO | | 0 | |
| InID | int(20) unsigned | NO | PRI | NULL | |
+--------------+---------------------+------+-----+---------+-------+
sorry its MDate
---------- Post updated at 06:25 AM ---------- Previous update was at 06:23 AM ----------
Quote:
Originally Posted by radoulov
You could use either:
Code:
select adv
from indata
where inid = '$INSTRUID'
and Date = (
select max(Date)
from indata
where inidi = '$INSTRUID'
limit 1
)
limit 1;
Or:
Code:
select a.adv
from indata a
join (
select inid, max(Date) Date
from indata
where inid = '$INSTRUID'
group by inid
) b
on a.inid = b.inid
and a.Date = b.Date
where a.inid = '$INSTRUID'
limit 1
;
I've added the limit clause for safety (not knowing your table structure and data, it's impossible to know if duplicates are possible).
Hi there,
I have a hierarchical database that include 4 tables. Table A is the parent of B, B is Parent of C, C is parent of D. If I want to query everything in D that is associated with A.name, how do I do that? Thanks!
YanYan (0 Replies)
Hi Guys,
I'm new to this forum as well as to UNIX shell scripting.
I'm looking for a shellscript to query an Oracle database table and populate the result set of the query in a text file.
Could you someone help me out with a sample code?
Thanks,
Bhagat (7 Replies)
I am debugging some code and came across ? in the WHERE cause in a mysql query.
Is this possible and what situations would this be used?
SELECT ip, count
FROM table
WHERE domain=?
thanks & regards (2 Replies)
hello all
i have 2 columns every column in the following format
column1
2011-04-01 11:39:54
column2
2019-02-03 00:00:00
i want get difference between above data as following
2 days 11:39
how to do so ?
i tried many functions but nothing works
please advice what is the query... (6 Replies)
Hi,
I want to access mysql query from database , for that i have tried the below code
#! /bin/bash
TABLE_NAME=database1
USER_NAME=root
IP_ADDR=111.20.9.256
somevar=`echo "select altid from alert where altid='2724'"| mysql -h $IP_ADDR -u $USER_NAME $TABLE_NAME `
echo $somevar
... (1 Reply)
Hello
i have created mysql query to compare to values and get difference in percentage
as following:
SELECT file_name, 100 - ((100 * (SELECT file_count FROM xipi_files z WHERE x.file_group = z.file_group AND x.file_name = z.file_name AND z.insert_date = CURDATE( ) - INTERVAL 1 DAY)) /... (1 Reply)
Hi All,
i have a table in mysql with the following data
Table name Test
Assettype Serial_No Status location
Mouse 123456 In Stock chennai
Mouse 98765 Allocated chennai
Keyboard ... (2 Replies)
Hello Friends,
I am using check_mysql_query plugin in nagios to query database and get output. query is working fine but output which i am getting contain query. I want to remove query from output and give custom message which will be simple and understandable.
Can you help me here with any... (5 Replies)
Discussion started by: ghpradeep
5 Replies
LEARN ABOUT PHP
mysqlnd_uh_set_connection_proxy
MYSQLND_UH_SET_CONNECTION_PROXY(3) 1 MYSQLND_UH_SET_CONNECTION_PROXY(3)mysqlnd_uh_set_connection_proxy - Installs a proxy for mysqlnd connectionsSYNOPSIS
bool mysqlnd_uh_set_connection_proxy (MysqlndUhConnection &$connection_proxy, [mysqli &$mysqli_connection])
DESCRIPTION
Installs a proxy object to hook mysqlnd's connection objects methods. Once installed, the proxy will be used for all MySQL connections
opened with mysqli, mysql or PDO_MYSQL, assuming that the listed extensions are compiled to use the mysqlnd library.
The function can be disabled with mysqlnd_uh.enable. If mysqlnd_uh.enable is set to FALSE the function will not install the proxy and
always return TRUE. Additionally, an error of the type E_WARNING may be emitted. The error message may read like PHP Warning:
mysqlnd_uh_set_connection_proxy(): (Mysqlnd User Handler) The plugin has been disabled by setting the configuration parameter
mysqlnd_uh.enable = false. The proxy has not been installed [...].
PARAMETERS
o $connection_proxy
- A proxy object of type MysqlndUhConnection.
o $mysqli_connection
- Object of type mysqli. If given, the proxy will be set for this particular connection only.
RETURN VALUES
Returns TRUE on success. Otherwise, returns FALSE
EXAMPLES
Example #1
mysqlnd_uh_set_connection_proxy(3) example
<?php
$mysqli = new mysqli("localhost", "root", "", "test");
$mysqli->query("SELECT 'No proxy installed, yet'");
class proxy extends MysqlndUhConnection {
public function query($res, $query) {
printf("%s(%s)
", __METHOD__, var_export(func_get_args(), true));
$ret = parent::query($res, $query);
printf("%s returns %s
", __METHOD__, var_export($ret, true));
return $ret;
}
}
mysqlnd_uh_set_connection_proxy(new proxy());
$mysqli->query("SELECT 'mysqlnd rocks!'");
$mysql = mysql_connect("localhost", "root", "", "test");
mysql_query("SELECT 'Ahoy Andrey!'", $mysql);
$pdo = new PDO("mysql:host=localhost;dbname=test", "root", "");
$pdo->query("SELECT 'Moin Johannes!'");
?>
The above example will output:
proxy::query(array (
0 => NULL,
1 => 'SELECT 'mysqlnd rocks!'',
))
proxy::query returns true
proxy::query(array (
0 => NULL,
1 => 'SELECT 'Ahoy Andrey!'',
))
proxy::query returns true
proxy::query(array (
0 => NULL,
1 => 'SELECT 'Moin Johannes!'',
))
proxy::query returns true
SEE ALSO mysqlnd_uh_set_statement_proxy(3), mysqlnd_uh.enable.
PHP Documentation Group MYSQLND_UH_SET_CONNECTION_PROXY(3)