Question

I am seeking a way in mySQL to select only records that have corresponding records in a linked table. I am likely suffering tunnel vision, or otherwise missing something simple.

I have the following query which currently works besides this requirement above:

SELECT P.ID, P.NAME, P.SEO_NAME, CI.City, R.Region, C.Country
FROM PROPERTIES P 
LEFT JOIN Cities CI ON P.CITY_ID = CI.CityId
LEFT JOIN Regions R ON P.REGION_ID = R.RegionID
LEFT JOIN Countries C ON P.COUNTRY_ID = C.CountryId 
WHERE APPROVED = '1' AND REGION_ID = '5400' 
ORDER BY RAND() LIMIT 1;

This is related to a previous question of mine, here: Select rows Having Count in linked table

While the answer in this linked thread worked for me at the time, I now require the additional information in the query above. Is there any way I can limit it so that only records with records in the linked table PROPERTY_PHOTOS PP (which links ON P.ID = PP.PROPERTY_ID)

Thanks in advance for any input.

Answer 1

One more JOIN, but not LEFT

SELECT ...
FROM PROPERTIES P
...
INNER JOIN PROPERTY_PHOTOS PP ON P.ID = PP.PROPERTY_ID

or just

SELECT ...
FROM PROPERTIES P
...
JOIN PROPERTY_PHOTOS PP ON P.ID = PP.PROPERTY_ID

because they are the same.