Don't like ads? PRO users don't see any ads ;-)
Public Pastes
Guest

Untitled

By: a guest on Aug 1st, 2012  |  syntax: None  |  size: 0.24 KB  |  hits: 10  |  expires: Never
download  |  raw  |  embed  |  report abuse  |  print
Text below is selected. Please press Ctrl+C to copy to your clipboard. (⌘+C on Mac)
  1. Mysql inner joins advanced, howto
  2. SELECT A.*, MAX(C.dates)
  3. FROM A
  4. JOIN B ON B.A_fk = A.id
  5. JOIN C ON C.B_fk = B.id
  6. GROUP BY A.id
  7.        
  8. SELECT A.*, MAX(C.dates)
  9. FROM A
  10. LEFT JOIN B ON B.A_fk = A.id
  11. LEFT JOIN C ON C.B_fk = B.id
  12. GROUP BY A.id
create a new version of this paste RAW Paste Data