sql server - SQL union for one identical column -


i have sql table translation of website :

translate

  • id : xxx.xxx.xxxx.xxxx
  • label : lbl_name
  • translate : name
  • language : english

i'm trying give users custom translation, users can set 1 or more labels have :

  • id : xxx.xxx.xxxx.xxxx
  • label: lbl_name
  • translate : n4m3
  • language : englishcustom

i want select translate languague = "english"

then select translate languague = "englishcustom"

and union name's column. if have identical name (here: lbl_name), give priority on englishcustom "n4m3", not "name".

i want understand how can doing : if have 2 identical label, user added trad on label, translate on englishcustom , not on english, sql request

can me please ? thank

if got query ready , need return right values might want have coalesce()

lets assume query (just eyplain, might not work):

select coalesce(t2.translate,t1.translate) translate t1   left join translate t2          on t1.label = t2.label         , t2.languague = concat (t1.languague,'custom') t1.languague = 'english'

coalesce return first non null value. if left join not join custom name default returned.

in pastebin did quick test mysql table should work you.


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