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orAClE 存储过程怎样写多个游标

CREATE OR REPLACE PROCEDURE ACC.DBP_REALCITYTRAFFICCNT IS CURSOR cur1 IS SELECT 。。。 --第一个游标 CURSOR cur2 IS SELECT 。。。 --第二个游标 BEGIN --调用cur1 BEGIN OPEN cur1 ; LOOP FETCH cur1 INTO 。。。 EXIT WHEN cur1%NOTFOUN...

oracle没有游标数组的概念。但是你可以定义动态游标,举个例子: declare bm number; zw varchar2(10); tt number; str varchar2(50); type cur_type is ref cursor; --定义游标类型 cur cur_type; --定义游标变量 begin str := 'select deptno,...

一、不带参数的游标for循环 1 首先编写存储过程的整体结构,如下: create or replace procedure test_proc is v_date date; --变量定义 begin select sysdate into v_date from dual; end test_proc; 2 定义游标: create or replace procedure ...

create or replace procedure PRO_GET_AVG is begin declare cursor temp is select id from tablex where status_id = 0; for i in temp loop select avg(filed_a) from tabley where xxxx=xxx; end loop; end;

一、不带参数的游标for循环 1 首先编写存储过程的整体结构,如下: create or replace procedure test_proc is v_date date; --变量定义 begin select sysdate into v_date from dual; end test_proc; 2 定义游标: create or replace procedure ...

举例回答: 案例: --For 循环游标--(1)定义游标--(2)定义游标变量--(3)使用for循环来使用这个游标declare --类型定义 cursor c_job is select empno,ename,job,sal from emp where job='MANAGER'; --定义一个游标变量v_cinfo c_emp%ROWTY...

oracle没有游标数组的概念。但是你可以定义动态游标,举个例子: declare bm number; zw varchar2(10); tt number; str varchar2(50); type cur_type is ref cursor; --定义游标类型 cur cur_type; --定义游标变量 begin str := 'select deptno,...

create or replaceprocedure pro6as vempno emp.empno%type; vename emp.ename%type; cursor c_emp is select empno,ename from emp;begin open c_emp; loop fetch c_emp into vempno,vename; exit when c_emp%notfound; dbms_output.put_line('...

declare cursor cur is select * from dual; c cur%TYPE; begin for c in cur loop ...... end loop; end;

你为什么要放到begin之后呢?正确写法应该是: create or replace procedure SP_TEST as title1_value varchar2(30); number1_value integer:=0; CURSOR c_1 IS SELECT city_name,COUNT(city_name) FROM view_alarm_KZ1 GROUP BY city_name; beg...

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