Postgresql:Изчислете ранга по брой клаузи true OR

Повторете условията и ги добавете:

SELECT * FROM mytable 
WHERE fld = 'A' OR fldB = CURRENT_DATE OR fldC = 7
ORDER BY
   (fld = 'A')::int + (fldB = CURRENT_DATE)::int + (fldC = 7)::int  
DESC