I have created a wordpress table with wp_compare_post with following column id, user_id, post_id, post_type. I have attached the image of the database.
Below is the coading for viewing data from database
function compare_counting(){
global $wpdb;
//get user id
$user_ID = get_current_user_id();
$sql = "SELECT * FROM $wpdb->compare_post WHERE user_id = '$user_ID '";
$results = $wpdb->get_results($sql) or die(mysql_error());
foreach( $results as $result ) {
echo $result->post_id.',';
}
}
But getting following error.
Notice: Undefined property: wpdb::$compare_post in
I think it could be because you need to use $wpdb->prefix
Try this:
$sql = "SELECT * FROM ".$wpdb->prefix."compare_post WHERE user_id = '$user_ID'";
I have a situation where I need to fetch details of an employee from the database using his ID and display them in the browser.
$sql = "SELECT * FROM employeesalarypayment WHERE empid = ".$val['empid'].";";
$query = $this->db->query($sql);
These are the statements that I have written to get the result array. My problem is how do I take a single field/column from this array? Also have I done it correctly?
Thanks in advance.
If your query return single data from database then you need to use
$row = $query->row_array()
Try this
$sql = "SELECT * FROM employeesalarypayment WHERE empid = ".$val['empid'].";";
$result = $this->db->query($sql)->result_array();
echo $result[0]['field_name'];
I am trying to query some rows from a MySQL database with Zend Framework 1. I need all columns, but want to sort them by a multiplication of columns:
$select = $this
->select()
->where('start_date < ' . $currentTime)
->where('end_date >' . $currentTime)
->order('columnA * columnB DESC');
This obviously isn't working.
With the Zend documentation, I'm getting to this:
$select = $this->select()
->from(array('p' => 'products'),
array('product_id',
'order_column' =>
new Zend_Db_Expr('columnA * columnB'))
)
->order('order_column DESC);
However, this only returns the product_id and new order_column, but I need all columns.
How to get there? How to return all columns of the selected rows, ordered by columnA * columnB?
Too quick. I found the solution by trying:
$select = $this
->select()
->where('start_date < ' . $currentTime)
->where('end_date >' . $currentTime)
->order(new Zend_Db_Expr('columnA * columnB DESC'));
This gives the desired result.
I'm trying to compose a view that we can use to export our inventory.
I have two tables:
Inventory, which contains the columns Description, Year, Make, Model, and Serial.
Pictures, which contains the columns DocumentBody, MimeType, Serial, and Last Modified.
I'd like to make a view that has all columns from Inventory, and also adds columns for x amount of Pictures related to Serial number.
So if there were two pictures with the same serial number, the resultant table would include these fields:
Description, Year, Make, Model, Serial, DocumentBody1, MimeType1, Last Modified1, DocumentBody2, MimeType2, Last Modified2.
For those Inventory items that only have one picture, the second picture columns would all be null.
Is this something I can even do? From what I'm reading about joins, it doesn't seem possible.
As others have said, you should probably evaluate whether you actually need the view you think you need. But if you really want it, you could use PIVOT in MSSQL:
WITH BaseData AS
(
SELECT Serial
,DocumentBody
,MimeType
,LastModified
,ROWNUMBER() OVER(PARTITION BY Serial ORDER BY LastModified) AS RowNum
FROM Pictures) AS t
),
DocumentPivot AS (
SELECT
Serial
,DocumentBody
,'DocumentBody' + RowNum AS ColumnName
FROM BaseData
),
MimePivot AS (
SELECT
Serial
,MimeType
,'MimeType' + RowNum AS ColumnName
FROM BaseData
),
ModifiedPivot AS (
SELECT
Serial
,LastModified
,'LastModified' + RowNum AS ColumnName
FROM BaseData
)
SELECT Description
,Year
,Make
,Model
,Inventory.Serial
,DocumentBody1
,MimeType1
,LastModified1
,DocumentBody2
,MimeType2
,LastModified2
,...
,LastModified10
FROM Inventory
LEFT OUTER JOIN (
SELECT Serial
,DocumentBody1
,DocumentBody2
,...
,DocumentBody10
FROM DocumentPivot
PIVOT (MAX(DocumentBody) FOR ColumnName IN (DocumentBody1, DocumentBody2, ..., DocumentBody10)) AS P1
) AS Documents
ON Documents.Serial=Inventory.Serial
LEFT OUTER JOIN (
SELECT Serial
,MimeType1
,MimeType2
,...
,MimeType10
FROM MimePivot
PIVOT (MAX(MimeType) FOR ColumnName IN (MimeType1, MimeType2, ..., MimeType10)) AS P2
) AS Mimes
ON Mimes.Serial=Inventory.Serial
LEFT OUTER JOIN (
SELECT Serial
,LastModified1
,LastModified2
,...
,LastModified10
FROM ModifiedPivot
PIVOT (MAX(LastModified) FOR ColumnName IN (LastModified1, LastModified2, ..., LastModified10)) AS P3
) AS Modifieds
ON Modifieds.Serial=Inventory.Serial
Select inventory.*, count(pictures.serial) as picture_count From inventory Left Join pictures On inventory.serial = pictures.serial Where [your where statement]
Use Left Join in case there are no pictures at all. This way you still get back a result.
Update
Actually, after reading your question again, it seems you just want to extend your search results with each additional picture in the system. That's not the best way to do this. The best you can do is just get a row returned for each pic that's in the system.
Select inventory.*, pictures.DocumentBody, pictures.MimeType, pictures.Serial, pictures.Last_Modified From inventory Left Join pictures On inventory.serial = pictures.serial Where [your where statement]
Since there is no "Group By" clause, this will give you 1 row for each picture. Then you can just loop through the results.
Also
There are ways to do this by making temp tables, looping through results within a stored procedure, creating new columns (DocumentBody1, DocumentBody2, etc) for each picture result and adding the data to the new fields, then querying the temp table. But that's a lot to go through I would think.
thanks for the help everyone. In the end, I ended up using PHP to accomplish this with the following code:
<?php
date_default_timezone_set('America/Edmonton');
$serverName = "database";
$connectionInfo = array( "Database"=>"CRM_MSCRM");
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn === false )
{
echo "Unable to connect.\n\n";
die( print_r( sqlsrv_errors(), true));
}
else
{
echo "Connected. Selecting trucks...\n\n";
}
$tsql = "SELECT * FROM CRM_MSCRM.dbo.Trader_Export_Simple";
$stmt = sqlsrv_query( $conn, $tsql);
if( $stmt === false )
{
echo "Error executing query.\n\n";
die( print_r( sqlsrv_errors(), true));
}
$csvData = array();
while ($row = sqlsrv_fetch_array($stmt))
{
$count = 1;
$mainpicsql = "SELECT * FROM CRM_MSCRM.dbo.TruckImages WHERE Serial = '".$row[0]."' AND MainPic = 1";
$mainpicstmt = sqlsrv_query( $conn, $mainpicsql);
while ($mainpicrow = sqlsrv_fetch_array($mainpicstmt))
{
$truck = $mainpicrow[1];
$mainfilename = $truck ."-". $count . ".png";
file_put_contents($mainfilename, base64_decode($mainpicrow[0]));
$mainpicdate = $mainpicrow[3]->format("d/m/Y h:m:s");
$mainfilename = "http://images.website/images/".$mainfilename;
echo $mainpicdate."\n";
}
$picsql = "SELECT * FROM CRM_MSCRM.dbo.TruckImages WHERE Serial = '".$row[0]."' AND MainPic = 0";
$picstmt = sqlsrv_query( $conn, $picsql);
$extrapicsdate = "";
$filenames = "";
while ($picrow = sqlsrv_fetch_array($picstmt))
{
$count++;
$filename = $picrow[1] ."-". $count . ".png";
file_put_contents($filename, base64_decode($picrow[0]));
$picdate = $picrow[3]->format("d/m/Y h:m:s");
$filenames .= "http://images.website/images/".$filename.";";
$extrapicsdate .= $picdate.";";
}
$filenames = rtrim($filenames, ";");
$extrapicsdate = rtrim($extrapicsdate, ";");
echo $filenames."\n";
echo $extrapicsdate."\n";
if ($truck != "") {
$csvData[] = array($truck, $mainfilename, $mainpicdate, $filenames, $extrapicsdate);
}
if ($filenames != "")
{
$filenames = "";
}
if ($extrapicsdate != "")
{
$extrapicsdate = "";
}
echo "Next truck...\n\n";
$truck = "";
$mainfilename = "";
$mainpicdate = "";
}
$fp = fopen('file.csv', 'w');
foreach ($csvData as $fields) {
fputcsv($fp, $fields);
}
//print_r($csvData);
sqlsrv_free_stmt( $stmt);
sqlsrv_free_stmt( $picstmt);
sqlsrv_close( $conn);
?>
this gets the files out but I still have to merge the resultant CSV with the main "information" CSV.
I got a complicated query which produces a concatenated result. However, although GROUP_CONCAT is necessary for other purposes, I still need to be able to use the pieces of the concatenated string individually.
GROUP_CONCAT(id, name, date AS concat1
echo $db_field['concat1'];
...produces this output: IdNameDate, and I need to be able to use (and echo) Id, Name and Date separately. I guess it must be assigned to an array, I'm a begginer in PHP and I really appreciate any help.
For sake of simplicity, above I have used id instead of eventid, name instead of eventname and date instead of eventstartdate. Below is the full code.
if ($db_found) {
$SQL ="
select sportname,
tournament_templatename,
tournament_stagename,
GROUP_CONCAT(eventid, eventname, eventstartdate SEPARATOR '<br />' ) as concat1
from (
SELECT event.id AS eventid,
event.name AS eventname,
event.tournament_stageFK AS eventtournamentstageFK,
event.startdate AS eventstartdate,
tournament_stage.id AS tournament_stageid,
tournament_stage.name AS tournament_stagename,
tournament_stage.tournamentFK AS tournament_stagetournamentFK,
tournament.id AS tournamentid,
tournament.name AS tournamentname,
tournament.tournament_templateFK AS tournamenttournament_templateFK,
tournament_template.id AS tournamenttemplateid,
tournament_template.name AS tournament_templatename,
tournament_template.sportFK AS tournament_templatesportFK,
sport.id AS sportid,
sport.name AS sportname
FROM
event INNER JOIN tournament_stage ON event.tournament_stageFK=tournament_stage.id
INNER JOIN tournament ON tournament_stage.tournamentFK=tournament.id
INNER JOIN tournament_template
ON tournament.tournament_templateFK=tournament_template.id
INNER JOIN sport ON tournament_template.sportFK=sport.id
WHERE
DATE(event.startdate) = CURRENT_DATE()
) a
group by sportname, tournament_templatename, tournament_stagename
order by sportid, tournament_templatename, tournament_stagename";
$result = mysql_query($SQL);
if($result === FALSE) {
die(mysql_error());
}
while($db_field=mysql_fetch_assoc($result)){
echo $db_field['concat1'];
}
mysql_close($db_handle);
}
I either need a way to get back to results before concatenating them, or a way to display IdNameDate as Id*Name*Date so I can use * as an explode delimiter.
Something like this?
$group = array();
$fields = array();
$fields['id'] = 2;
$fields['name'] = "test";
$fields['date'] = "2010/02/13";
$group["test"] = $fields;
To get an individual field:
echo $group["test"]["id"];
To get a whole group line:
echo implode(",", $group["test"]); // change "," to any delimiter character
To get all group lines:
foreach($group as $key => $g)
echo $key.":".implode(",", $g).";"; // change "," to any delimiter character
Hope this helps...
I guess the only way to do it is to:
Explode the GROUP_CONCAT results to get individual strings
Use substr to extract Id, Name and Date from each result as Id and Date are consistent, they always have the same number of characters
In the end, GROUP_CONCAT does more harm than good.