java时间函数，以及 sql 时间范围查找 代码
String keyword = request.getParameter("keyword");
String timeRange = request.getParameter("timeRange");
String type = request.getParameter("type");
StringBuffer sql = new StringBuffer();
sql.append("use webstation_leadall select f.id,f.title,f.publishtime from information f left join infotype t on f.typeid=t.id where ");
if( (keyword == null)|| (keyword.equals("")) ){
sql.append("title like '%' and ");
}else {
sql.append("title like '%"+keyword +"%' and ");
}
if(timeRange.equals("")||timeRange==null){
sql.append("");
}else{
//Calendar cal = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss");
//String now = sdf.format(cal.getTime());
String begintime = "";
String endtime = "";
java.util.Date myDate=new java.util.Date();
long myTime = 0;
if(timeRange.equals("1")){
myTime=((myDate.getTime()/1000)-60*60*24)*1000;
begintime = sdf.format(new java.util.Date(myTime));
endtime = sdf.format(myDate);
//System.out.println("------"+begintime+"+++++"+endtime);
}else if(timeRange.equals("3")){
myTime=((myDate.getTime()/1000)-60*60*24*3)*1000;
begintime = sdf.format(new java.util.Date(myTime));
endtime = sdf.format(myDate);
//System.out.println("------"+begintime+"+++++"+endtime);
}else if(timeRange.equals("7")){
myTime=((myDate.getTime()/1000)-60*60*24*7)*1000;
&n
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优点:字段较少，有增删改查功能，不过查询太笼统。
缺点:
1.不算是在很正的无限分类,ClassPath这个字段定义限制。
2.主键CLASSID不是自增的，使用CODESMITH批量生成多层架构代码中会导致出错。
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ArticleClass]') and OBJECTPROPERTY(id, N'IsUse ......
select * from pet;
insert into pet values('Liujingwei','Liuchao','cat','f','1984-04-18',null);
UPDATE pet set birth='1989-08-31' WHERE name='Slim';
select * from pet WHERE birth>'1998-1-1';
SELECT * from pet WHEREselect * from pet;
insert into pet values('Liujingwei','Liuchao','cat','f','198 ......
BEGIN TRANSACTION--开始事务
DECLARE @errorSun INT --定义错误计数器
SET @errorSun=0 --没错为0
UPDATE a SET id=232 WHERE a=1 --事务操作SQL语句
SET @errorSun=@errorSun+@@ERROR --累计是否有错
UPDATE aa SET id=2 WHERE a=1 --事务操作SQL语句
SET @errorSun=@errorSun+@@ERROR --累计是否有错
I ......
if exists(select 1 from sysobjects where name='char_index')
drop function char_index
create function char_index(@string varchar(8000),@char varchar(10),@index smallint)
--@string:待查找字符串，@index:查找位置
returns smallint
as
begin
declare
@i tinyint,--当前找到第@i个
......
==============================================
第01讲: Chapter 00--Oracle 11g SQL Fundamentals Training Introduction
在线观看： http://www.boobooke.com/v/bbk2003
视频下载： http://www.boobooke.com/v/bbk2003.zip
第02讲: Chapter 00--Oracle 11g SQL Fundamentals Training Introduction ......
