Potresti usare questo semplice test:
WHERE (requires = 'privacy-weight' AND privacy-weight = 0) OR requires <> 'privacy-weight' OR requires IS NULL
La prima parte (requires = 'privacy-weight' AND privacy-weight = 0) impedisce l'output di:
privacy-weight | requires
-------------------------
1 | privacy-weight
Ma mantiene:
privacy-weight | requires
-------------------------
0 | privacy-weight
Mentre la seconda parte OR requires <> 'privacy-weight' OR requires IS NULL manterrà i seguenti:
privacy-weight | requires
-------------------------
0 | NULL
1 | NULL
1 | NULL
