Closed mengjin2015 closed 9 years ago
When there are some optional relationships, those columns corresponding to the relationships could be NULL, and therefore, the conditions for joining tables should take account into this effect.
@mengjin2015
Thanks for the contributions, hadn't run into that issue before. Appreciate you catching it and fixing it!
-- Gavin
When there are some optional relationships, those columns corresponding to the relationships could be NULL, and therefore, the conditions for joining tables should take account into this effect.