如何使用 mysql 查询仅选择列值包含值的行

Question

I have a simple query as below. Bit new to all this. I am selecting rows that contain specific words in one column - location column has values like 'Spain>Canary Islands>Lanzarote>Playa Lanzarote'.

I can find rows that contain a specific value but I need to refine it so it only matches rows where the 3rd value after each '>' is the same, rather than the whole value.

$location = 'Lanzarote';

$results = $wpdb->get_results($wpdb->prepare("
SELECT *    
FROM $tablename 
WHERE location LIKE '%%$location%%'
ORDER BY rating
LIMIT 10
")); 

Does anyone know how to do this? I have spent hours searching and trying various things. I thought SUBSTRING_INDEX might work but no luck as this seems to apply to the result set.

Answer 1

SELECT *    
FROM $tablename 
WHERE SUBSTRING_INDEX(SUBSTRING_INDEX(location, '>', 4), '>', -1) LIKE '%$location%'
ORDER BY rating
LIMIT 10

If there is less than 4 parts in a path (less than 3 '>' symbols) then the last part will be tested.