CREATE DATABASE ADDRESSLIST; USE ADDRESSLIST; DROP TABLE IF EXISTS FRIEND; CREATE TABLE FRIEND (FRIEND_ID INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY , FRIEND_NAME VARCHAR(20) NOT N ......
String sqlCount="select count(*) from usertable where username='"+ userName+"'";这句话 什么意思啊! 这句话输出出来就是 select count(*) from usertable where username='你的变量 ......
create procedure proc_batchUpdate(in categoryId integer , in artIds varchar(50)) begin set @dsql = count('update article set type=' , categoryId , ' where id in (' , artIds , ' ......