SQL AND NOT和AND等价物

Question

我有以下SQL语句:

AND NOT (wo.ci_cnc_date IS NOT NULL AND p.prioid != '1 - Routine')

MSDN声明"使用NOT否定表达式".

如果这是真的,那么上述陈述是否相当于:

AND (wo.ci_cnc_date IS NULL AND p.prioid == '1 - Routine')   

Answer 1

不,这相当于:

AND (wo.ci_cnc_date IS NULL OR p.prioid == '1 - Routine')