MySQL 存储过程循环 MySQL循环语句(包括WHILE,REPEAT和LOOP)来根据条件反复运行代码块. MySQL提供循环语句,允许您根据条件重复执行一个SQL代码块. MySQL中有三个循环语句:WHILE,REPEAT和LOOP. 我们将在以下部分中更详细地检查每个循环语句. WHILE循环 WHILE语句的语法如下: WHILE expression DO statements END WHILE WHILE循环在每次迭代开始时检查表达式. 如果expression为TRUE,
USE [clab] GO /****** Object: StoredProcedure [dbo].[sp_bd_getResultByEcd] Script Date: 08/06/2014 16:47:55 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO -- ============================================= -- Author: zhangcy -- Create date: 2
用游标,和WHILE可以遍历您的查询中的每一条记录并将要求的字段传给变量进行相应的处理==================DECLARE @A1 VARCHAR(10),@A2 VARCHAR(10),@A3 INTDECLARE CURSOR YOUCURNAME FOR SELECT A1,A2,A3 FROM YOUTABLENAMEOPEN YOUCURNAMEfetch next from youcurname into @a1,@a2,@a3while @@fetch_status<
经常需要测试数据,写个存储过程方便日后使用. DROP PROCEDURE IF EXISTS add_member; DELIMITER $$ CREATE PROCEDURE add_member (IN loop_times INT) BEGIN ; WHILE member_account < loop_times DO ; INSERT INTO t_member ( member_name, member_password ) VALUES ( member_account, 'e1
--存储过程,查询A表,向B表插入数据 create or replace procedure prc_sg_sjtj_config(p_flag out varchar2) IS BEGIN FOR c_row IN (SELECT T.UNIT_NAME, T.DATA_NAME, T.TABLE_NAME, T.UPDATE_ODR, DECODE(T.DATA_METHODS, '文件', '拷贝', '接口', '服务接口', '交换平台') AS DATA_METHODS FROM
2017-07-24 14:12:42 SQL内容: 1.一次性检索 100000 条数据. 2. 1000 条提交一次. 3.超过 100000 万条,重新打开游标,重新检索. pl/sql内容如下: CREATE OR REPLACE PROCEDURE P_MDF_TEST ( branchno1 in varchar ) AS cursor cur_inst is select plcno from t1test where branch in ( select branchcode f
/*Navicat MySQL Data Transfer Source Server : localhost_3306Source Server Version : 50505Source Host : localhost:3306Source Database : kamanage Target Server Type : MYSQLTarget Server Version : 50505File Encoding : 65001 Date: 2018-09-11 13:50:36*/ S
-- 存储过程示例一 inDROP DATABASE IF EXISTS tdemo;CREATE DATABASE tdemo CHARACTER SET=utf8; USE tdemo;CREATE TABLE temp2( id INT NOT NULL PRIMARY KEY AUTO_INCREMENT, nodename VARCHAR(10))ENGINE=INNODB DEFAULT CHARACTER SET=utf8 COLLATE=utf8_general_ci
--存储过程,循环create or replace procedure delTables(ename t_emp.ename%TYPE)AScon number;i NUMBER := 1;tablename USER_TABLES.TABLE_NAME%TYPE;BEGIN select count(TABLE_NAME) into con from USER_TABLES where last_analyzed > to_date('2014/1/17 00:00:00','yyyy/m
) .sdo_point.x x, sdo_geom.sdo_centroid(t.shape, ) .sdo_point.y y from gd_zy_region t SQL如何取得一个面的中心点 SELECT MAX(SUBSTR(N.COOR, , LENGTH(N.COOR))) AS COOR FROM (select curr, SYS_CONNECT_BY_PATH(coor, ';') AS COOR, prev from (select rownum as curr, m