考虑下列声明,那些是不合法的:() A: DECLAREv_name,v_deptVARCHAR2(14); B: DECLAREv_testNUMBER(5); C: DECLAREV_MAXSALARYNUMBER(7,2)=5000; D: DECLAREV_JOINDATEBOOLEAN:=SYSDATE;
考虑下列声明,那些是不合法的:() A: DECLAREv_name,v_deptVARCHAR2(14); B: DECLAREv_testNUMBER(5); C: DECLAREV_MAXSALARYNUMBER(7,2)=5000; D: DECLAREV_JOINDATEBOOLEAN:=SYSDATE;
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