Questions tagged [sql]

Structured Query Language (SQL) is a language for querying databases.

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3
votes
1answer
125 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 ...
0
votes
1answer
660 views

How to SET a user-defined MySQL variable and increment it to produce ranking values with JDatabaseQuery?

I'm trying to write this query: SET @rownumber = 0; UPDATE #__hikers SET rank = (@rownumber:=@rownumber+1) ORDER BY score DESC; like JDatabaseQuery, but still got an error. Please help UPDATE: I ...
22
votes
1answer
14k views

How to combine ANDs and ORs in the WHERE clause using a Query Object?

Given the desired SQL below, where Cond1 and Cond2 must be met OR Cond3 must be met for selection, what is the correct way to use getQuery() to achieve it? Desired SQL: Condition1 and Condition2 ...
3
votes
4answers
2k views

How to write my MySQL query with JOIN logic using JDatabase methods?

I'm having a difficult time translating this SQL script to JDatabase methods because I can't find the AND query method. SELECT user.firstname, user.lastname, leadership.leadname, leadership.lead_des ...
4
votes
3answers
1k views

How to rewrite SQL-query with CASE/WHEN to Joomla-based “format”

I have the following SQL-query to database: $jinput = JFactory::getApplication()->input; $category_id = $jinput->get('virtuemart_category_id'); $db = JFactory::getDBO(); $query = $db->...
2
votes
3answers
80 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()...
2
votes
2answers
3k views

Error 1146 while installing K2 extension

While installing K2 extension, Joomla 3.0, GoDaddy hosting) received error message: Table 'iWebazoid.bq1ry_k2_categories' doesn't exist SQL=SHOW FULL COLUMNS FROM bq1ry_k2_categories Unable to ...
1
vote
3answers
2k views

Retrieving multiple results from the database

I don't have much Joomla or PHP experience so I'm probably missing something really simple. I'm trying to load a certain list of user IDs into an array. This code works except it only loads one result....
1
vote
2answers
47 views

How to count aggregate data from RSForm submission values with Joomla's query building methods?

user SubmissionId FormId FieldName FieldValue bob 2 16 state mystate1 bob 2 16 qda myqad1 bob 2 16 city mycity1 rob 3 16 state mystate2 rob 3 16 qda myqad1 rob 3 16 city mycity1 jac 4 16 state ...
0
votes
2answers
166 views

Ordering Joomla menus in code

I am trying to order jos_menu items by the order in which they appear on the menu. In other words, I am using jdatabase sql queries to fetch menu objects then iterate through them to display them. I ...
-1
votes
3answers
6k views

1054 Unknown column 'extra_query'

I have a new Joomla installation with this error: 1054 Unknown column 'extra_query' in 'field list' SQL=SELECT DISTINCT update_site_id, type, location, last_check_timestamp, extra_query FROM ...