H2内存数据库

准备素材 ： H2 数据库 jar包（ 导入到web工程lib下 ）java代码三种模式import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import javax.annotation.Resource;import com.STNCP.Tracker.Service.AuthorizeCodeService;public class TestH2 {@Resourceprivate static AuthorizeCodeService acService;//Embedded模式public static void h1(){try {Class.forName("org.h2.Driver");} catch (ClassNotFoundException e2) {// TODO Auto-generated catch blocke2.printStackTrace();}Connection conn = null;Statement stmt = null;ResultSet rs = null;try {conn = DriverManager.getConnection("jdbc:h2:E:\\research\\workspace\\H2Test\\db\\test", "sa", "");} catch (SQLException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}try {stmt = conn.createStatement();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}/* try {stmt.execute("INSERT INTO lbssql VALUES ('3123', '3213', '3213', '3213', '3213', '3213', '3213')");} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}*/ try {rs = stmt.executeQuery("SELECT * FROM AuthorizeCode");} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}        try {while(rs.next()) {   System.out.println(rs.getString("Token"));}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  try {conn.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}//server模式public static void h2(){try {Class.forName("org.h2.Driver");} catch (ClassNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}  Connection conn = null;try {conn = DriverManager.getConnection("jdbc:h2:~/test", "sa", ""); } catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  Statement stmt = null;try {System.out.println(conn);stmt = conn.createStatement();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  ResultSet rs = null;try {stmt.execute("INSERT INTO lbssql VALUES ('3123', 'liuyutong', '3213', '3213', '3213', '3213', '3213')");rs = stmt.executeQuery("SELECT * FROM lbssql ");} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}      try {while(rs.next()) {   System.out.println("成功MNC==>"+rs.getString("MNC"));}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  try {conn.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}//内存模式public static void h3(){ try {Class.forName("org.h2.Driver");} catch (ClassNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}  Connection conn = null;try {conn = DriverManager.      getConnection("jdbc:h2:mem:test", "sa", "");} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  // add application code here  Statement stmt = null;try {stmt = conn.createStatement();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();} try {//stmt.executeUpdate("CREATE TABLE TEST_MEM(ID INT PRIMARY KEY,NAME VARCHAR(255));"); stmt.executeUpdate("DROP TABLE IF EXISTS token");stmt.executeUpdate("CREATE TABLE token ( "+ "UserID bigint(12) NOT NULL, Token varchar(50) NOT NULL"+ ",StartTime datetime NOT NULL,EndTime datetime NOT NULL,Created datetime NOT NULL ,"+ "CreateBy bigint(12) NOT NULL,Updated datetime NOT NULL,UpdateBy bigint(12) NOT NULL  "+ ") ENGINE=InnoDB DEFAULT CHARSET=utf8;"); stmt.executeUpdate("INSERT INTO token VALUES (1, '219263189', '2015-7-22 10:43:52', '2015-7-22 11:13:52', '2015-7-15 20:53:52', 1, '2015-7-15 20:53:52', 1)");  } catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}  ResultSet rs = null;try {rs = stmt.executeQuery("SELECT * FROM token");} catch (SQLException e) { // TODO Auto-generated catch blocke.printStackTrace();}      try {while(rs.next()) {   try {System.out.println(rs.getString("Token"));} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}} catch (SQLException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}  try {conn.close();} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public static void main(String[] args)throws Exception {//TestH2.h1();//TestH2.h2(); TestH2.h3(); }}

h2导入导出数据

export：

call CSVWRITE ( 'C:/MyFolder/MyCSV.txt', 'SELECT * FROM MYTABLE' )

import

：

insertinto MYTABLE ( select * from csvread('d:/output1.csv')) ; 

Mysql 导出csv文件：

select * fromtest_info   into outfile 'd://output1.csv'   fields terminated by ',' optionally enclosed by '"' escaped by'"'   lines terminated by '\r\n'; 里面最关键的部分就是格式参数这个参数是根据RFC4180文档设置的，该文档全称Common Format and MIME Type for Comma-Separated Values (CSV) Files，其中详细描述了CSV格式，其要点包括：(1)字段之间以逗号分隔，数据行之间以\r\n分隔；(2)字符串以半角双引号包围，字符串本身的双引号用两个双引号表示。通过执行上述代码，便可以将需要的数据以csv格式导出到执行的文件中。                                                                                                                                                                                                                                                                ----- yt.Liu