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Linux下mysql多表数据拆分单表

时间:2019-09-28 23:17:48      阅读:142      评论:0      收藏:0      [点我收藏+]

标签:false   name   bst   ble   min   nbsp   后缀   color   term   

需求

写代码以前都复制粘贴,菜的一比,第一次碰见一个生活中的实际需求,哎,数据结构和流,线程还是得认真学啊

 

表结构如下

#!/bin/bash
# ** 存储过程名称: ysp.ddl
# ** 功能描述:
# ** 创建者: wx
# ** 创建日期:
# ** 修改者:
# ** 创建日期:
# ** 修改内容:

drop table if exists ods_payment_flow_sf7;
create table ods_payment_flow_sf7(
paymentid               string ,                                     
currency                string ,                                     
paytype                 string ,                                     
recordtype              string ,                                     
appname                 string ,                                     
channelid               string ,                                     
userid                  string ,                                     
merchantaccount         string ,                                     
result                  string ,                                     
amount                  float  ,                                     
createtime              string ,                                     
finishtime              string ,                                     
lastup                  string ,                                     
productorderid          string ,                                     
refundpaymentid         string ,                                     
serviceid               string ,                                     
migupaypaytype          string ,                                     
migupayothertype        string ,                                     
migupayorderid          string ,                                     
strdata                 string ,                                     
resultsource            string ,                                     
portaltype              string ,                                     
ip                      string ,                                     
bizdate                 string ,                                     
importtime              date   
)partitioned by                                                                 
(in_month string)                                                               
row format                         
delimited fields terminated by ‘|‘;
 
drop table if exists ods_payment_flow_sf71;
create table ods_payment_flow_sf71(
paymentid               string ,                                     
currency                string ,                                     
paytype                 string ,                                     
recordtype              string ,                                     
appname                 string ,                                                                      
result                  string ,                                     
amount                  float  ,                                     
createtime              string ,                                     
finishtime              string ,                                     
lastup                  string ,                                     
productorderid          string ,                                                             
)partitioned by                                                                 
(in_month string)                                                               
row format                         
delimited fields terminated by ‘|‘;
        

--货币信息表
drop table if exists dim_scope_currency;
create table dim_scope_currency
(
currency                     string              comment  ‘      货币类型                             ‘ ,  
scope                        string              comment  ‘     scope                      ‘ ,  
status                       string              comment  ‘     状态(0:未启用/1:启用)                             ‘ ,  
remark                       string              comment  ‘       备注                             ‘ , 
)
partitioned by (in_month string)
row format
delimited  fields terminated by ‘|‘;


将上百张表导出单张分表。

代码如下

package other;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class SplitWord {
public static void main(String[] args) throws Exception {
splitFileDemo("C:\\Users\\rongx\\Desktop\\ddl-bat\\yp_ods2.ddl",1200);
}
public static void splitFileDemo(String path,int maxline) throws Exception {
FileInputStream fis = new FileInputStream(path);
InputStreamReader isr = new InputStreamReader(fis, "UTF-8");
BufferedReader br = new BufferedReader(isr);
// 获取文件名
/* String fileName = path.substring(0, path.indexOf("."));
// 获取文件后缀
String endName = path.substring(path.lastIndexOf("."));*/
try {
int i = 0;
boolean end = false;//判断文件是否读取完毕
while (true) {
if (end)
break;
StringBuffer sb = new StringBuffer();
String[] arr=null;
/* sb.append(fileName);
sb.append("_data");
sb.append(i);
sb.append(endName);*/
int flag=-1;
if(flag==-1) {
sb.append("E:\\test\\");
sb.append("first");
sb.append(".txt");
}
int count=0;
System.out.println(sb.toString());// 新生成的文件名
// 写入文件
FileOutputStream fos=null;
OutputStreamWriter osw=null;
BufferedWriter bw=null;
if(count==0) {
fos = new FileOutputStream(new File(
sb.toString()),true);
osw = new OutputStreamWriter(fos, "UTF-8");
bw = new BufferedWriter(osw);
bw.flush();
}
String line = "";// 一行行读取文件
int m = 1;

while((line = br.readLine())!=null ){
boolean b = line.contains("drop table");
if(b){
String[] split=null;
if(line.contains("exists")){
split = line.split("exists");
}else{
split = line.split("table");
}
System.out.println(split[1]);
String replace = split[1].replace(";", "").trim();
arr=new String[1];
arr[0]=replace;
}
if( line.startsWith("drop table")){
flag++;
count++;
}
if(count==1){
bw.write(line);
bw.write("\r\n");
}
if(count>1){
sb.setLength(0);
sb.append("E:\\test\\");
sb.append(arr[0]);
sb.append(".txt");
fos = new FileOutputStream(new File(
sb.toString()),true);
osw = new OutputStreamWriter(fos, "UTF-8");
bw = new BufferedWriter(osw);
bw.write(line);
bw.write("\r\n");
bw.flush();

}
if(m>=maxline){
break;
}
m++;
}
if(m<maxline)
end = true;

//关闭写入流
bw.close();
osw.close();
fos.close();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
//关闭输入流
br.close();
isr.close();
fis.close();
}
System.out.println("--- 文件分割完成 ---");

}
}

结果如下
技术图片

 


  技术图片

 

 

 

 


 

 

Linux下mysql多表数据拆分单表

标签:false   name   bst   ble   min   nbsp   后缀   color   term   

原文地址:https://www.cnblogs.com/rongxing/p/11605165.html

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