Mysql query that searches in table with no reference to current search? - mysql

Question

I have a HTML input field that searches for names in a MySql table and drops down a DIV that displays first 15 records found.
The names are displayed with DISTINCT (so unique values).
If I type in for example adr in the text input box, it will display first 15 matches for "%adr%".
What I need to do now (and I can't get any luck with it), is look for 2 different types of codes (located in codes_table_1 and codes_table_2), in the same text input field (so expanding my existing query).
The structure of the 2 codes_tables would be this below (each having id and name as columns):
code_id_1 | code_name_1
1 XK112932
2 XK082192
3 ...
and
code_id_2 | code_name_2
1 GG882931
2 GG014253
3 ...
So I need to find a way to add to my DISTINCT rows containing unique persons with their phone and addresses, these codes, as in adding new rows to the result query.
For example if instead of a name I look for "KD139", I need to get 1st 15 occurences that begin / or have inside the code KD139, looking this up into the 2 codes tables.
Here's my query for unique names :
SELECT DISTINCT CONCAT(COALESCE(customer.last_name,''), ' ',
COALESCE(customer.first_name,'')) as fullName,
customer.first_name,
customer.last_name,
customer.email,
address.phone,
customer.customer_id
FROM customer
LEFT JOIN address
ON address.address_id = customer.address_id
WHERE CONCAT(COALESCE(customer.first_name,''), ' ', COALESCE(customer.last_name,'')) LIKE :search OR
CONCAT(COALESCE(customer.last_name,''), ' ', COALESCE(customer.first_name,'')) LIKE :search OR
customer.business_name LIKE :search OR
customer.email LIKE :search OR
address.phone LIKE :search
LIMIT 15
UPDATE (a solution that works!) :
(SELECT DISTINCT
customer.customer_id,
CONCAT(COALESCE(customer.last_name,''), ' ', COALESCE(customer.first_name,'')) as fullName,
customer.email,
address.phone
FROM customer
LEFT JOIN address
ON address.address_id = customer.address_id
INNER JOIN th_table
WHERE CONCAT(COALESCE(customer.first_name,''), ' ', COALESCE(customer.last_name,'')) LIKE :search OR
CONCAT(COALESCE(customer.last_name,''), ' ', COALESCE(customer.first_name,'')) LIKE :search OR
customer.business_name LIKE :search OR
customer.email LIKE :search OR
address.phone LIKE :search
ORDER BY fullName ASC
LIMIT 15)
UNION ALL
(SELECT code1_table.code1_id,
code1_table.code1_number,
'TH_TABLE' as email,
Null as phone
FROM code1_table
WHERE code1_table.code1_number LIKE :search
ORDER BY code1_table.code1_number ASC
LIMIT 15)
UNION ALL
(SELECT code2_table.code2_id,
code2_table.code2_number,
'CODE2_TABLE' as email,
Null as phone
FROM code2_table
WHERE code2_table.code2_number LIKE :search
ORDER BY code2_table.code2_number ASC
LIMIT 15)

Answer 1

Let's say you want to search artist and song tables together for search terms. You might try someting like this.
SELECT *
FROM (
SELECT 'artist' as type,
first as first, last as last, label as tag
FROM artist
WHERE first LIKE '%searchterm%'
OR last LIKE '%searchterm%'
OR label LIKE '%searchterm%'
UNION ALL
SELECT 'song' as type,
title as first, '' as last, '' as tag
FROM song
WHERE title LIKE '%searchterm%'
)
This gets you a result set with information from both tables in it, formatted so UNION ALL makes sense. You can then filter and order the results appropriately for your application.
I offer only one guarantee on this sample code: It will be slow. LIKE '%thing' is a notorious performance antipattern.