BlogJava-Jody-随笔分类-SQL Server

Insert text file into MySQL

zhaofei1394 — Wed, 13 Sep 2006 03:33:00 GMT

import java.io.File;
import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

public class InsertTextFileToMySQL {

   public static Connection getConnection () throws Exception {
     String driver = "org.gjt.mm.mysql.Driver" ;
     String url = "jdbc:mysql://localhost/databaseName" ;
     String username = "root" ;
     String password = "root" ;

     Class .forName ( driver ) ;
     Connection conn = DriverManager.getConnection ( url, username, password ) ;
     return conn;
   }

   public static void main ( String [] args ) throws Exception {
     String id = "001" ;
     String fileName = "fileName.txt" ;

     FileInputStream fis = null ;
     PreparedStatement pstmt = null ;
     Connection conn = null ;
     try {
       conn = getConnection () ;
       conn.setAutoCommit ( false ) ;
       File file = new File ( fileName ) ;
       fis = new FileInputStream ( file ) ;
       pstmt = conn.prepareStatement ( "insert into DataFiles(id, fileName, fileBody) values (?, ?, ?)" ) ;
       pstmt.setString ( 1 , id ) ;
       pstmt.setString ( 2 , fileName ) ;
       pstmt.setAsciiStream ( 3 , fis, ( int ) file.length ()) ;
       pstmt.executeUpdate () ;
       conn.commit () ;
     } catch ( Exception e ) {
       System.err.println ( "Error: " + e.getMessage ()) ;
       e.printStackTrace () ;
     } finally {
       pstmt.close () ;
       fis.close () ;
       conn.close () ;
     }
   }
}

zhaofei1394 2006-09-13 11:33 发表评论

一个简单的存储过程！

zhaofei1394 — Mon, 26 Jun 2006 06:23:00 GMT

create procedure wap_data_content_zf as
declare @data_0 varchar(100)
declare @date_1 varchar(100)
declare @date_2 varchar(100)
declare @yvisit integer
declare @yadd integer
declare @mvisit integer
declare @madd integer

set @data_0=convert(char(8),getdate(),112)
set @data_1=convert(char(8),dateadd(day,-1,getdate()),112)
set @date_2=left(convert(char(30),dateadd(day,-1,getdate()),121),10)

print @temp_0
print @temp_1
print @temp_2

select @yvisit=count(distinct(mid)) from dbo.wap_log_access_2006_6 where uri='/wap/pd/yysl_yk/index.jsp'
and mid != ''
and create_time >= '2006-06-06 00:00:00'
and create_time <= '2006-06-06 23:59:59'

select @mvisit=count(distinct(mid)) from dbo.wap_log_access_2006_6 where uri='/wap/pd/mlmhc_yk/index.jsp'
and mid != ''
and create_time >= '2006-06-06 00:00:00'
and create_time <= '2006-06-06 23:59:59'

select @yadd=count(distinct(mid)) from dbo.wap_log_fee_2006_6 as a
where a.uri='/wap/pd/yysl_yk/get.jsp'
and a.mid != ''
and a.portal_id=0
and a.create_time >= '2006-06-06 00:00:00'
and a.create_time <= '2006-06-06 23:59:59'
and exists(select * from dbo.wapuser as b where a.mid = b.mid and b.serviceid='30050631'
and b.firsttime >= '2006-06-06 00:00:00'
and b.firsttime <= '2006-06-06 23:59:59')

select @madd=count(distinct(mid)) from dbo.wap_log_fee_2006_6 as a
where a.uri='/wap/pd/mlmhc_yk/get.jsp'
and a.mid != ''
and a.portal_id=0
and a.create_time >= '2006-06-06 00:00:00'
and a.create_time <= '2006-06-06 23:59:59'
and exists(select * from dbo.wapuser as b where a.mid = b.mid and b.serviceid='02011095'
and b.firsttime >= '2006-06-06 00:00:00'
and b.firsttime <= '2006-06-06 23:59:59')

insert into wap_data_content_zf wap(date,mvisit,madd,yvisit,yadd)
values(@temp_2,@mvisit,@madd,@yvisit,@yadd)

zhaofei1394 2006-06-26 14:23 发表评论

CREATE PROCEDURE

zhaofei1394 — Mon, 29 May 2006 05:24:00 GMT

CREATE PROCEDURE birdincome_zf
AS
declare @actionid integer
declare @mid varchar(100)
declare @service_id varchar(100)

declare case1    cursor for
    SELECT mid,service_id from bird_user_2006_03 where type=0
declare case2    cursor for
    SELECT mid,service_id from bird_user_2006_03 where type=1

open case1
fetch next from case1 into @mid,@service_id
while (@@fetch_status=0)
    begin
        select top 1 @actionid=bb.actionid from operation_temp_0526 as bb
               where bb.serviceid=@service_id and bb.mid=@mid
        order by bb.id desc

     if (@actionid=1)
        insert into bird_user_2006_04(mid,service_id,type,portal_id) values(@mid,@service_id,'1','10000')
     else
         print 'ooooooo'
        fetch next from case1 into @mid,@service_id
   end
deallocate case1

open case2
fetch next from case2 into @mid,@service_id
while (@@fetch_status=0)
    begin
        select top 1 @actionid=bb.actionid from operation_temp_0526 as bb
               where bb.serviceid=@service_id and bb.mid=@mid
        order by bb.id desc

     if (@actionid != 2)
        insert into bird_user_2006_04(mid,service_id,type,portal_id) values(@mid,@service_id,'2','10000')
        fetch next from case2 into @mid,@service_id
   end
deallocate case2
GO

zhaofei1394 2006-05-29 13:24 发表评论

在SQL中使用convert函数进行日期的查询

zhaofei1394 — Wed, 19 Apr 2006 08:10:00 GMT

曾经遇到这样的情况,在数据库的Meeting表中有PublishTime (DateTime,8)字段,用来存储一个开会时间,在存入时由于要指明开会具体时间,故格式为yyyy-mm-dd hh:mm:ss,而我们查询时是通过yyyy-mm-dd来进行的,即查询某一天的所有会议信息,这样如果通过select * from Meeting where PublishTime=@PublishTime (参数@PublishTime为yyyy-mm-dd格式)语句进行查询将无法得到正确结果,比如我们要查询2004年12月1日的会议信息,在输入2004-12-01时就不能得到查询结果,而这种查询又不能要求输入具体的hh:mm:ss.

此时我们需要使用convert函数,它可以将一种数据类型的表达式转换为另一种数据类型的表达式.此处我们先将数据库内的datetime类型转换为char类型,由于输入的参数是10位的,所以写成

select * from Meeting where convert(varchar(10),PublishTime,121))=@PublishTime,这样在查询时数据库得到参数后先自动将数据库内的信息转换为yyyy-mm-dd格式的10位字符,只要与参数相同即可返回查询结果.而convert中的121是指将datetime类型转换为char类型时获得包括世纪位数的4位年份

格式:
CONVERT(data_type,expression[,style])

说明:
此样式一般在时间类型(datetime,smalldatetime)与字符串类型(nchar,nvarchar,char,varchar)
相互转换的时候才用到.

例子:
Select CONVERT(varchar(30),getdate(),101) now
结果为
now
---------------------------------------
09/15/2001

/////////////////////////////////////////////////////////////////////////////////////

style数字在转换时间时的含义如下

-------------------------------------------------------------------------------------------------
Style(2位表示年份) | Style(4位表示年份) | 输入输出格式
-------------------------------------------------------------------------------------------------
- | 0 or 100 | mon dd yyyy hh:miAM(或PM)
-------------------------------------------------------------------------------------------------
1 | 101 | mm/dd/yy
-------------------------------------------------------------------------------------------------
2 | 102 | yy-mm-dd
-------------------------------------------------------------------------------------------------
3 | 103 | dd/mm/yy
-------------------------------------------------------------------------------------------------
4 | 104 | dd-mm-yy
-------------------------------------------------------------------------------------------------
5 | 105 | dd-mm-yy
-------------------------------------------------------------------------------------------------
6 | 106 | dd mon yy
-------------------------------------------------------------------------------------------------
7 | 107 | mon dd,yy
-------------------------------------------------------------------------------------------------
8 | 108 | hh:mm:ss
-------------------------------------------------------------------------------------------------
- | 9 or 109 | mon dd yyyy hh:mi:ss:mmmmAM(或PM)
-------------------------------------------------------------------------------------------------
10 | 110 | mm-dd-yy
-------------------------------------------------------------------------------------------------
11 | 111 | yy/mm/dd
-------------------------------------------------------------------------------------------------
12 | 112 | yymmdd
-------------------------------------------------------------------------------------------------
- | 13 or 113 | dd mon yyyy hh:mi:ss:mmm(24小时制)
-------------------------------------------------------------------------------------------------
14 | 114 | hh:mi:ss:mmm(24小时制)
-------------------------------------------------------------------------------------------------
- | 20 or 120 | yyyy-mm-dd hh:mi:ss(24小时制)
-------------------------------------------------------------------------------------------------
- | 21 or 121 | yyyy-mm-dd hh:mi:ss:mmm(24小时制)
-------------------------------------------------------------------------------------------------

以上是我在开发中遇到的小困难的总结,如果写的有不正确的地方欢迎大家指教!

zhaofei1394 2006-04-19 16:10 发表评论