Home Database Mysql Tutorial mysql数据导入sqlserver数据库方法

mysql数据导入sqlserver数据库方法

Jun 07, 2016 pm 04:17 PM
mysql sqlserver import data database method

方法一:通过在mysql中备份sql来将mysql数据导入sqlserver。适合于数据量不大的情况使用(如何你的数据中存在的blob字段的数据量不是很多或者不存在可以考虑)。 特点:对于小数据量的迁移:方便快捷。 步骤:1:使用mysql工具备份sql文件,我这里用的是SQLyog

   方法一:通过在mysql中备份sql来将mysql数据导入sqlserver。适合于数据量不大的情况使用(如何你的数据中存在的blob字段的数据量不是很多或者不存在可以考虑)。

  特点:对于小数据量的迁移:方便快捷。

  步骤:1:使用mysql工具备份sql文件,我这里用的是SQLyog软件。

  2:对备份的sql文件进行处理(原因是这些备份的sql文件可以在sqlserver解析器中不能通过需要进行写修改)。此处以SQLyog举例:

  /*!40101 SET NAMES utf8 */;

  /*!40101 SET SQL_MODE=''*/;

  /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;

  /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;

  /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;

  /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

  /*Data for the table `t_standard_check_unit` */

  insert into `t_standard_check_unit`(`SYSTEM_ID`,`UNIT_TYPE_1`,`UNIT_TYPE_2`,`UNIT_TYPE_3`,`UNIT_TYPE_4`,

`UNIT_TYPE_5`,`UNIT_TYPE_6`) values ('01',9,7,6,8,4,NULL),('02',9,8,6,5,4,NULL),('03',9,8,5,6,4,NULL),('04',9,8,5,6,4,NULL),('05',9,8,6,5,4,NULL),('06',9,8,5,6,4,NULL),('07',9,9,9,8,4,NULL),('08',9,8,6,5,4,NULL),('09',9,9,9,8,4,NULL);

  /*Data for the table `t_standard_system` */

  上面是备份的sql文件中的部分:

  注意:a:其中insert into `t_standard_check_unit`(`SYSTEM_ID`,`UNIT_TYPE_1`,`UNIT_TYPE_2`,`UNIT_TYPE_3`,

`UNIT_TYPE_4`,`UNIT_TYPE_5`,`UNIT_TYPE_6`)这一段中的引号在sqlserver中不能支持所以得通过程序处理掉。

  处理程序:

  public void switchSqlFile(File file) throws IOException{

  BufferedReader bReader = new BufferedReader(new InputStreamReader(new FileInputStream(file),"utf-8"));

  String filePathOld = file.getAbsolutePath();

  String filePath = filePathOld.substring(0,filePathOld.indexOf(".")) + "_switchFile"

  + filePathOld.substring(filePathOld.indexOf("."));

  BufferedWriter bWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(filePath)),"utf-8"));

  String str = "";

  while((str =bReader.readLine()) !=null){

  if(str.contains("CREATE DATABASE"))

  continue;

  if(str.contains("USE `q9`"))

  continue;

  if(str.toLowerCase().contains(") values(") || str.toLowerCase().contains(") values (")|| str.toLowerCase().contains(")values(")||str.toLowerCase().contains(")values (")){

  String ss = str.substring(0,str.toLowerCase().indexOf("values ("));

  str = ss.substring(0,ss.indexOf("(")).replaceAll("`", "") + str.substring(str.toLowerCase().indexOf(" values ("));

  }

  str +="rn";

  bWriter.write(str);

  }

  bReader.close();

  bWriter.close();

  }

  此部分程序不是很智能,此处只举个例子。

  b:这里是通过将一个表的数据导出为一行,,这样导出恢复速度快,(sql优化问题),但是注意:当表中的数据行数超过1K时在sql脚本解析中是通不过的,此时应该选择一条记录一行insert语句的形式。(补充点知识:当一行过长时文本编辑器打开的速度会很慢,所以第二种方式也方便在文本编辑器中查看。)

  3:利用处理后的sql导入sqlserver数据库。

  方法1:直接打开sql文件通过在sqlserver中执行导入。

  方法2:利用sqlcmd命令导入sql文件,功能同mysql中的source,具体使用参考上一篇文章。

  方法二:通过ODBC桥接器来完成数据迁移:

  待续。。。。。。。。。。。。。。。。。。。。。。。

  总结的小知识:

  mysql向sqlserver2008兼容

  一:脚本兼容问题

  1:sqlserver不支持在外键约束中加on delete restrict on update restrict。

  2:sqlserver2008不支持drop table if exists XXX。

  3:sqlserver2008不支持blob类型,需要改成image或者text类型。

  注意,建立数据库时最好用修改的方式添加约束,这样在进行数据库恢复时可以先不建立约束,可以免去约束带来的麻烦和效率问题。

  最好将约束整理到最下面。及采用表及约束而不是列及约束。

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