Questions tagged [mysql]
MySQL is a database system used by many websites on the Internet. Joomla is based on PHP and MySQL.
220
questions
1
vote
1answer
33 views
Problem accessing database from front end of a component
I am currently working on a component which will display "events", stored in a database, on a map (filterable by location, category, date etc...). My first step is to display a simple report of the ...
0
votes
0answers
57 views
Code works properly but shows data for all users
I am using the latest RS Form Pro with Joomla 3.9, Platform 13.1.0.
My code is working properly (thank you guys!) But the data should be limited to each user. The user ID is is not in the table ...
1
vote
1answer
31 views
How to match database values regardless of accents on letters?
With the following LIKE condition in my WHERE clause, I only get the exact match.
. ' LIKE '. $db->quote($db->escape($artist)), 'AND') .
When $artist is, for example Beyoncé, it only returns a ...
1
vote
2answers
38 views
Trying to display mysql values properly in php
I am trying to display my commissions for each month. I want to display all 12 months with a total for each month. I've started with just January but this is as close as I have come to get to what I ...
0
votes
1answer
47 views
Select Query With Integer and Quotes Fails
Joomla 3.9.13
I'm having some issues with a simple select query. This query is generated by the core files, I haven't created any overrides or changed the code.
In administrator/components/...
0
votes
2answers
47 views
Jooma Article content to load from mysql based on ID in url?
On my old website, built in php i had a link on a page, wich picked an ID based on what line it was.
<td width=124><a href="tp/package.php?ID=<?php echo $row[0];?>">Package</a>...
0
votes
0answers
43 views
Joomla 3.9.13 - Error: Failed to start application
I just installed version 3.9 joomla in local using xampp. Once the installation was finished correctly I tried to navigate the site and the backend. After loading a few pages, this annoying error ...
1
vote
1answer
49 views
How to collect multi-row data from #__fields_values and assign specific aliases for each value in the result set?
I have the following (working) query to get name, username and the value of a custom field:
// Get a db connection.
$db = JFactory::getDbo();
// Create a new query object.
$query = $db->getQuery(...
0
votes
1answer
37 views
Joomla 3 database query select with limit [duplicate]
How can I use this query with joomla 3 with limit to 3
SELECT * , (3956 * 2 * ASIN(SQRT( POWER(SIN(( $coorlat - latitude) * pi()/180 / 2), 2) +COS( $coorlat * pi()/180) * COS(latitude * pi()/180) * ...
1
vote
1answer
16 views
Custom Field Tag Style List
Joomla 3.9.11
I have created an SQL custom field for my joomla contacts called location, this allows me to assign a location to my contacts.
The SQL simply selects location_name from a custom db ...
1
vote
1answer
51 views
Raw sql query returns multiple rows, but with Joomla methods only one row is returned
For some reason the query I put directly to DB works, but when set in Joomla syntax it is returning only 1 result, and there should be a lot more...
Clear Mysql query:
SELECT
vmp....
1
vote
1answer
73 views
How to query for users from a specific user group?
I want to list only the users with a group_id value of 10.
Why doesn't the following query work?
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->select('a.id, a.name, a....
0
votes
0answers
32 views
Joomla! extensions table is not unique
The Joomla! extensions table is not editable in PHPMyAdmin. I believe there are non-unique values there too, so it cannot have an index. This is wreaking havoc with my install, I can't add any new ...
1
vote
1answer
115 views
Delete query and left join with JDatabaseQuery doesn't work
I'm trying to convert a delete query with left join to use JDatabaseQuery, but I am encountering an issue in the query. The query that I'm trying to convert and which works is the following :
$db->...
0
votes
1answer
50 views
How to write a DELETE query with WHERE conditions using JDatabaseQuery syntax?
I have a query which I am trying to convert to JDatabaseQuery syntax, but I'm not able to find the correct way.
The query is the following:
DELETE upt FROM #__mycomponent_user_posts AS upt WHERE upt....
1
vote
1answer
40 views
JCE convert unicode after save in my DB
I added 🔒 in the source code of JCE. JCE convert it to 🔒.
The problem is after save in my database ist is a scratch characters 🔒.
My question now is should I modyfy JCE (How?) or ...
0
votes
0answers
17 views
idx_XXX error after reimport from content table
I export only the xxx_content table from SQL with TRUNCATE.
After reimport the table the follow error message comes:
ALTER TABLE `XXX_content`
ADD PRIMARY KEY (`id`), ADD KEY `idx_access` (`access`...
1
vote
2answers
65 views
Filtering product query with two sets of filters. (J2Store)
I have two disjointed sets of product filters, $special_filters and $other_filters. I'm trying to retrieve the products from the database which match any of the filters in $special_filters AND any of ...
2
votes
1answer
66 views
Issues to be aware of when calling `concatenate()`, `regexp()`, `rand()`, and `castAsChar()` in sql queries
I'm taking it upon myself to become aware of some of the lesser known/used query methods because I like toying with MySQL and I want to implement Joomla calls when possible/sensible -- because they ...
1
vote
1answer
60 views
How to integrate my custom Administrator component with core Joomla database tables during install?
Background: I am starting to package up three associated custom Joomla extensions that I've developed. (This is directly associated with my previous JSE question, if you want more context.) The ...
1
vote
1answer
272 views
Installation page not shown due to MySql access denied and 500 server error
On Ubuntu 18.04.1 LTS, the installation page is not shown. Instead, I see a blank page with
Error
On MySql log I see this:
Access denied for user ''@'localhost' (using password: NO)
However I ...
1
vote
1answer
100 views
How to write the logged in user id in Plotalot queries?
I am trying to use plotalot to graph user results. The program only uses mysql queries to pull data. How can I pull session specific user data with a mysql query? Normal Joomla session variables ...
1
vote
1answer
139 views
How to sort title of items with natural sort order?
When you have in a column a list of items such as:
Title1
Title2
...
Title10
Title11
and you filter on Title (alphabetically), the output is like:
Title1
Title10
Title11
Title2
I want it to sort ...
0
votes
2answers
214 views
How to get Custom Fields related to Joomla Content?
I want to know how they get the values of custom user fields within Joomla articles. This is to contribute ideas and ways to solve it.
2
votes
2answers
131 views
How to query for users that have all tags when searching for multiple tags?
I have this custom module that shows all contacts based on some tags. I can add one or more tags in a field in the module
What I want is to add the option in the module to show:
all contacts that ...
1
vote
1answer
123 views
SQL Error when updating custom component in Joomla 3.9
I have a custom component and I want to add language filter to my extension.
So in my sql update file I added the following two lines to Alter my tables.
ALTER TABLE `#__contract_contracts` ADD `...
0
votes
1answer
776 views
MySQL update select one table from another
I'm struggling to get this MySQL query to work and hoping someone out there can help please.
I wish to "copy" one record from table traincomprofiler to course_dates where both tables share the column ...
3
votes
1answer
696 views
How to write a query with GROUP BY and ORDER BY using Joomla's query methods?
I have the following query that I need to convert to Joomla using JDatabase. This query executes as intended in the phpMyAdmin.
SELECT `id`, DATE_FORMAT(`estEventDate`, '%b %Y') AS estDate, COUNT(`id`...
1
vote
1answer
130 views
How to construct a JOIN query with Joomla's query methods?
I'm really new to SQL queries but now stuck with this one.
I need the first and last name of a user
from table #__comprofiler
where their cb_job_role = 'Team Leader' and their cb_service_name = [the ...
1
vote
2answers
528 views
How to check if specific table names exist in a database?
All I want to do is check if a table exists or not and I can't figure it out.
I've tried:
for ($r = 0; $r < count($tableArray); $r++) {
$db = JFactory::getDbo();
$query = $db->getQuery(...
2
votes
2answers
163 views
How to query certain rows from a table based on other associated rows in the same table?
I'm trying to query my jos_rsform_submission_values table for FieldValue data in rows with a FieldName of Container# which shares a SubmissionId with another row where the FieldValue is "Pending" and ...
-1
votes
1answer
180 views
How to write a conditional check on a column value with a mysql query?
I am trying to setup a simple default statement on the results page of a testing system. This seems like it would be relatively simple, but I cannot get my if statement to process properly.
The ...
2
votes
1answer
208 views
How to count the rows in a database table that have a date in the current year?
I am writing a module that displays a count of the number of records depending on the date_time column. I am able to get the result that I am looking for when using a static date as below. However, I ...
1
vote
2answers
589 views
How to write a query with a WHERE clause with two conditions?
I cannot seem to get this select statement to work with the WHERE conditions. Depending how it loads the data, I either get the first test result or all of the test results and not the user_id-...
2
votes
3answers
67 views
Confusion about using two select() method calls in one query
I am using Joomla's JDatabaseQuery methods to select some columns from two joined tables, but I don't understand something about the following snippet.
//Initialize variables.
$db = JFactory::getDbo()...
3
votes
1answer
392 views
with insert on duplicate key update - updating multiple rows at once
With latest joomla version I try to achieve one query to the database and updating multiple rows at once.
I want to make a query like this:
INSERT INTO `tablename`
(`id`,`date`) VALUES
('79','2018-...
1
vote
1answer
88 views
How do I set the flag CLIENT_MULTI_STATEMENTS for calling multiple stored procedures in a single stored procedure?
How do I set the flag CLIENT_MULTI_STATEMENTS for calling multiple stored procedures in a single stored procedure?
I have 30 stored procedures I would like to execute with a button click to process ...
0
votes
1answer
54 views
Joomla / PHPMyAdmin bug when “select” is in the value
This question was originally asked on StackExchange, and it was recommended by @mickmackusa that I ask it here.
Background
We recently changed over from one server to a brand new one.
Old server: ...
0
votes
1answer
141 views
How to access user-submitted values from a dynamic form?
I want to insert a row in my db-table with inputs from users. The form the users fill out is made with a foreach-loop:
foreach ($results as $row) {
echo '<div class="vm_kampe"><input ...
0
votes
2answers
121 views
How to generate missing column data using a reformatted substring of another column?
Due to a process issue (i.e. client not following instructions) I have over 900 urls with missing aliases in a mosets tree table.
If possible I would like to create an SQL query that will generate ...
1
vote
2answers
192 views
How to refactor two select queries on RSForm submission data?
I was wondering if anyone could help me JOIN multiple queries into one query. Currently, these 2 blocks of code retrieve information from the DB. I am using the "Sourcerer" plugin to add custom PHP ...
1
vote
2answers
66 views
How to re-write sql for joomla JDatabase
I am new to custom Joomla coding so excuse me for this, I want to execute the following statement:
"SELECT
MAX(CASE WHEN v.FieldName = 'Team_Name' THEN v.FieldValue END) 'Team_Name'
, MAX(...
1
vote
2answers
638 views
Use one pdo connection across multiple modules?
I have multiple modules on the same page that are individually connecting to the same external database through pdo connections. The website is getting slower since I added more modules. My guess is ...
3
votes
2answers
639 views
Check if INSERT query was successful or failed because of a duplicate UNIQUE KEY
I have a db-table called league where the mail column is the unique id:
|name |mail |
|Bryan|bryan@hotmail.com |
I have a frontend where users can sign up and then I have this for ...
0
votes
2answers
228 views
Rows with same id in same div
I have a db-table called vm_kupon. It looks a little like this:
|id |uid |bet |
|1 |20 |1 |
|2 |20 |2 |
|1 |21 |X |
|2 |21 |1 |
|1 |22 |X |
|2 |22 |X |
I ...
1
vote
1answer
74 views
Query gives a single value when two columns in SELECT clause
I do have a database connection earlier in the script.
$db = JFactory::getDbo();
Here's the query code:
$albumartistidquery = $db->getQuery(true);
$albumartistidquery->select($db->...
3
votes
1answer
94 views
What is the prefered method for sharing code and SQL queries in joomla 3.9+?
I'm developing a component that is targeting Joomla 3.9+. The code is not using the legacy classes and is instead using the new namespaces. The component will duplicate much of the functionality from ...
0
votes
1answer
313 views
Php-sql result in joomla displayed in question marks
I have a simple sql query, in a joomla php server, rs forms pro. The result contains Greek characters. However, the result is displayed in question marks.
$sql = "SELECT `FieldValue` FROM `table` ...
1
vote
2answers
276 views
UPDATE query to add 1 to multiple columns
I have a website for my football team. I have some statistics and so on in there, for example how many games each player has played and so on.
What I would like, is for me to write in the names of ...
5
votes
1answer
1k views
SQL Injections using Jfactory::getDBO and setQuery()
$db = JFactory::getDBO();
$searchP = JRequest::getVar('key');
$sql = "SELECT name FROM people LIKE " . "'%" . $searchP . "%'";
$db->setQuery($sql);
$fileR = $db->loadObjectList();
Will ...
