SQL Query filtering advice - mysql

Question

I'm not sure what I'm trying to do is possible but I've been trying to get different methods to a solution I need but so far I've come up empty handed.
Lets say I have 2 tables (just an example, in my case theres a hell of a lot more + alot more data)
One called clients and the other called form_data.
We have multiple clients in the clients table and in the form_data table we have multiple rows for each company present in the clients table. In form_data we store the serialized data from different forms. (id and data)
I'm currently pulling all records from the form_data table and I am trying to use a regexp on the data column to filter for instance that the value 'motor oil' is found in them.
I would like a way to do this filter but filter the company and not the forms .. so I want to find the forms that have 'motor oil' in them and the remove all entries for COMPANIES that don't have this match, but I want to keep all the forms showing for the companies that match.
I can post my query but it is rather long and i think if we can solve the above it should be sufficient for me to implement into the actual query.
Regards
EDIT:
SELECT f.form_question_has_answer_id AS f__form_question_has_answer_id, f.form_question_has_answer_request AS f__form_question_has_answer_request,
f.form_question_has_answer_form_id AS f__form_question_has_answer_form_id, f.form_question_has_answer_user_id AS f__form_question_has_answer_user_id,
p.project_company_has_user_id AS p__project_company_has_user_id, p.project_company_has_user_project_id AS p__project_company_has_user_project_id,
p.project_company_has_user_user_id AS p__project_company_has_user_user_id, c.company_id AS c__company_id, c.company_hall_no AS c__company_hall_no,
c.company_type AS c__company_type, c.company_company_name AS c__company_company_name, c.company_country AS c__company_country,
c.company_stand_number AS c__company_stand_number, c.company_image_file_1 AS c__company_image_file_1, p2.project_id AS p2__project_id,
p2.project_name AS p2__project_name, u.user_id AS u__user_id, u.user_username AS u__user_username, f2.form_id AS f2__form_id
FROM form_question_has_answer f
INNER JOIN project_company_has_user p ON f.form_question_has_answer_user_id = p.project_company_has_user_user_id
INNER JOIN company c ON p.project_company_has_user_company_id = c.company_id
INNER JOIN project p2 ON p.project_company_has_user_project_id = p2.project_id
INNER JOIN user u ON p.project_company_has_user_user_id = u.user_id
INNER JOIN form f2 ON p.project_company_has_user_project_id = f2.form_project_id
WHERE f.form_question_has_answer_id IN ('19262', '21560', '23088', '22660', '14772', '18495', '18720', '21625', '19957', '20943')
AND ((f2.form_template_name = "custom" AND p.project_company_has_user_garbage_collection = 0 AND p.project_company_has_user_project_id = 29) AND f.form_question_has_answer_request REGEXP 'item-cadcae')
ORDER BY company_company_name asc
The query is from a doctrine query.
EDIT:
If i have a company with 10 forms in the form_data table if i filter by 'motor oil' all forms for that company that don't have motor oil are removed.. so if only 1 of the 10 forms for company id 144 has the word motor oil then the other 9 forms are lost in the query.. I want to keep them. What I want is any company that didn't find any forms with that match (motor oil) to have all their forms removed from the search.

Answer 1

All form data for all customers who have at least one form that matches the search:
SELECT * FROM `form_data`
WHERE `clientid` IN (
SELECT DISTINCT `clientid` FROM `form_data`
WHERE `data` RLIKE '[[:<:]]motor oil[[:>:]]'
);

Answer 2

SELECT
c.*
FROM
clients as c
INNER JOIN (
select
*
from
forms
where
sometext like '%motor oil%'
) as f
ON f.client = c.id
http://sqlfiddle.com/#!3/5b616/1
in this part:
select
*
from
forms
where
sometext like '%motor oil%'
you can put any query that selects the relevant rows from your forms table with the appropriate filters.
you can do the inverse too with a left outer join where null technique.. though in this case modifying the subquery to return a list of distinct clients will probably give you more like the results you expect:
SELECT
c.*
FROM
clients as c
LEFT OUTER JOIN (
select
distinct
client
from
forms
where
sometext like '%motor oil%'
) as f
ON f.client = c.id
where f.client is null
http://sqlfiddle.com/#!3/5b616/4
so with your query something like:
SELECT
c.*
FROM
company AS c
INNER JOIN (
SELECT
DISTINCT c.company_id
FROM
form_question_has_answer f
INNER JOIN project_company_has_user p
ON f.form_question_has_answer_user_id = p.project_company_has_user_user_id
INNER JOIN company c
ON p.project_company_has_user_company_id = c.company_id
INNER JOIN project p2
ON p.project_company_has_user_project_id = p2.project_id
INNER JOIN user u
ON p.project_company_has_user_user_id = u.user_id
INNER JOIN form f2
ON p.project_company_has_user_project_id = f2.form_project_id
WHERE
f.form_question_has_answer_id IN ('19262', '21560', '23088', '22660', '14772', '18495', '18720', '21625', '19957', '20943')
AND ((f2.form_template_name = "custom"
AND p.project_company_has_user_garbage_collection = 0
AND p.project_company_has_user_project_id = 29)
AND f.form_question_has_answer_request REGEXP 'item-cadcae')
ORDER BY company_company_name asc
) as f
ON f.company_id= c.id

Answer 3

Not sure What do you mean by keeping all the forms showing for the companies that match?
Aren't just getting at this...
select * from clients inner join form_data on clients.id = form_data.id where form_data.[data] like '%motor oil%'

Answer 4

This will return all forms with 'motor oil' in them filled for the companies which also have 'motor oil' in their name:
SELECT *
FROM clients c
JOIN form_data fd
ON fd.client = c.id
WHERE fd.data RLIKE '[[:<:]]motor oil[[:>:]]'
AND c.name RLIKE '[[:<:]]motor oil[[:>:]]'