怎样将选择功效存储到Oracle进程中的变量中
发布时间:2021-05-16 23:45:13 所属栏目:站长百科 来源:网络整理
导读:我写了一个简朴的措施.我实行将选择功效存储在变量中.我行使“SELECT INTO”查询,但我不能这样做. 例: DECLARE v_employeeRecord employee%ROWTYPE;BEGIN SELECT * INTO v_employeeRecord FROM Employee WHERE Salary 10;END; 你有几个选择.您可以将该查询
我写了一个简朴的措施.我实行将选择功效存储在变量中.我行使“SELECT INTO”查询,但我不能这样做. 例: DECLARE v_employeeRecord employee%ROWTYPE; BEGIN SELECT * INTO v_employeeRecord FROM Employee WHERE Salary > 10; END;你有几个选择.您可以将该查询转换为游标: DECLARE CURSOR v_employeeRecords IS SELECT * FROM Employee WHERE Salary > 10; v_employeeRecord employee%ROWTYPE; BEGIN FOR v_employeeRecord IN v_employeeRecords LOOP /* Do something with v_employeeRecord */ END LOOP; END; 可能,您可以建设一个TABLE变量: DECLARE v_employeeRecord employee%ROWTYPE; v_employeeRecords IS TABLE OF employee%ROWTYPE; i BINARY_INTEGER; BEGIN SELECT * BULK COLLECT INTO v_employeeRecords FROM Employee WHERE Salary > 10; i := v_employeeRecords.FIRST; WHILE v_employeeRecords.EXISTS(i) LOOP v_employeeRecord := v_employeeRecords(i); /* Do something with v_employeeRecord */ i := v_employeeRecords.NEXT(i); END; END; 我没有在Oracle中实行这些示例,因此您也许会碰着编译器错误… (编辑:湖南网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |