Question

i have a table called properties, i want to get all records in this table that match “hold=1” but an extra table holds property names in diferent languages i need to get the english language or if doesnt exist the language markes as default

table properties:

pid     hold

property_translations:

pid     lang_id     pname     description     isDefault

i normally get the language using a union

(select pname from property_translations where lang_id='en' and pid=$pid)
union
(select pname from property_translations where isDefault='Yes' and pid=$pid)
limit 1

Answer 1

SELECT p.pid, t.pname FROM properties p LEFT OUTER JOIN translations t ON p.pid = t.pid
    WHERE p.hold=1 AND t.isDefault='Yes' AND NOT EXISTS
    ( SELECT * FROM translations ti WHERE ti.pid = p.pid AND ti.lang_id='en')
    UNION SELECT p.pid, t.pname FROM properties p 
    LEFT OUTER JOIN translations t ON p.pid = t.pid
    WHERE p.hold=1 AND t.lang_id='en';