ORACLE中AND与OR的优先级

一、AND比OR的优先级高sql --Y select 'Y' from dual where 1=2 and 1=2 or 1=1; --Y select 'Y' from dual where (1=2 and 1=2) or 1=1; --No value select 'Y' from dual where 1=2 and (1=2 or 1=1); select 以下sql：数据 SEL

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