Evaluate the following function code: CREATE FUNCTION get_dept_avg(dept_id NUMBER) RETURN NUMBER RESULT_CACHE RELIES_ON (EMPLOYEES) IS avgsal NUMBER(6); BEGIN SELECT AVG(SALARY)INTO avgsal FROM EMPLOYEES WHERE DEPARTMENT_ID = dept_id; RETURN avgsal; END get_dept_avg; Which statement is true regarding the above function?() The cached result becomes invalid when any structural change is done to the EMPLOYEES table. 。 If the function execution results in an unhandled exception,the exception result is also stored in the cache.。 Each time the function is invoked in a different session,the current result in the result cache gets overwritten.。 If the function is invoked with a different parameter value,the existing result in the result cache gets overwritten by the latest value.。
螺栓穿入方向应一致朝外且合理,螺栓拧紧后外露丝扣不小于()扣。 1~2。 2~3。 3~4。 4~5。
简述往复式压缩机活塞的基本结构型式。
关于八卦的起源,下面说法不正确的是()。 《河图》所出的形状。 上古时期结绳改书契时留下遗迹。 生殖崇拜。 占卜的方法。
2011年7月以后,用人单位与工伤职工解除或者终止劳动合同时,应向工伤职工支付一次性医疗补助金和一次性伤残就业补助金。
In Recovery Manager (RMAN), you have set control file autobackup to ON by using the following command: CONFIGURE CONTROLFILE AUTOBACKUP ON; Which two events would cause the control file to be backed up automatically? ()