On 1/27/2016 2:10 PM, Yannick Duch?ne wrote: > `UNIQUE` constraint allows multiple NULL: is this expected?
http://www.sqlite.org/lang_createtable.html "For the purposes of UNIQUE constraints, NULL values are considered distinct from all other values, including other NULLs." I'm reasonably, but not 100%, sure this is standard-conforming. -- Igor Tandetnik