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mysql 游标嵌套

CREATE PROCEDURE SumOfStu(OUT Sdeptno int,OUT Sdeptname char(20),OUT sumBefore int,OUT sumAfter int) BEGIN DECLARE l_sum int; DECLARE l_Sdeptno int; DECLARE l_sno int; DECLARE l_sumBefore int; DECLARE done, done2 INT DEFAULT 0;...

CREATE PROCEDURE SumOfStu(OUT Sdeptno int,OUT Sdeptname char(20),OUT sumBefore int,OUT sumAfter int)BEGINDECLARE l_sum int;DECLARE l_Sdeptno int;DECLARE l_sno int;DECLARE l_sumBefore int;DECLARE done, done2 INT DEFAULT 0;DECLAR...

略微麻烦一些,你看看这个博客文章 http://blog.csdn.net/fh13760184/article/details/5630055

Oracle 存储 过程中多层嵌套游标的用法 Oracle sql脚本代码 CREATE OR REPLACE PROCEDURE P_DELETE_QK (pId in NUMBER, deep in NUMBER) AS -- pId = 分类ID deep = 深度,层级!

游标在fetch赋值的时候,后面的字段名最好不要跟获取游标时的列名相同。 你试着把所有declare字段加一个前缀 如t_

DECLARE stuName VARCHAR(50); DECLARE flag INT; DECLARE update_cursor CURSOR FOR SELECT stu_name FROM student WHERE id = id; DECLARE CONTINUE HANDLER FOR NOT FOUND SET flag=1; SET flag=0; OPEN update_cursor; REPEAT /*循环*/ FETC...

用动态游标吧 creat or replace procedure test is v_jqid varchar2(50); v_sql varchar2(1000); type t_cursor is ref cursor; c_jqid t_cursor; c_emp t_cursor; begin v_sql := 'select f_jqid from paiming_all group by f_jqid'; open c_jq...

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