1、第12章游標(biāo)1.游標(biāo)：相當(dāng)于Java中的ResultSet，可以存放批量的數(shù)據(jù)。語法：定義游標(biāo)?打開游標(biāo)?提取游標(biāo)中的數(shù)據(jù)?關(guān)閉游標(biāo)題：declarecurscurissnamefromstudent定義游標(biāo)v_snamestudent.sname%typebeginopencur打開游標(biāo)fetchcurintov_sname提取游標(biāo)中的數(shù)據(jù)dbms_output.put_line(v_sname)closecur關(guān)閉游標(biāo)end題：de

2、clarecurscisfromstudentv_stustudent%rowtypebeginopencfetchcintov_studbms_output.put_line(v_stu.sname||v_stu.sage)closecend2.利用循環(huán)遍歷游標(biāo)declarecurscisfromstudentv_stustudent%rowtypebeginopencloopfetchcintov_studbms_output.pu

3、t_line(v_stu.sname||v_stu.sage)exitwhenc%notfoundv_empemployees%rowtypebeginopencfetchcintov_empwhilec%foundloopdbms_output.put_line(v_emp.first_name)fetchcintov_empendloopclosecendF循環(huán)：declarecurscisfromstudentbeginfiinc