存储过程中游标使用

oracle:
1.静态游标
create or replace procedure TEST is
CURSOR SELECT_CP IS
select * from b_gzb_pm;
R_CP SELECT_CP%ROWTYPE;
begin
OPEN SELECT_CP;
LOOP
FETCH SELECT_CP
INTO R_CP;
EXIT WHEN SELECT_CP%NOTFOUND;
DBMS_OUTPUT.put_line('Salary of Employee' || R_CP.asst_id || 'is' ||R_CP.asst_nm);
END LOOP;
CLOSE SELECT_CP;
end;

2.动态游标
定义:
type cur is ref cursor;
select_cp cur;
str_select VARCHAR2(1000);
N INTEGER;
使用:
N := 8;
str_select:= 'select * from b_gzb_pm where pm > '||N;
OPEN select_cp for str_select;
......