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import java.sql.*;

public class testMysql {
        public static void main(String[] args) {
        try {
            Class.forName("com.mysql.jdbc.Driver").newInstance();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
       
        Connection conn =null;
        Statement stmt = null;
        ResultSet rs = null;
        String name = null;
       
        try {
        conn = DriverManager.getConnection("jdbc:mysql://localhost/test?user=root&password=");
            stmt=conn.createStatement();
   
    String sql = "select * from tb_user";
    rs = stmt.executeQuery(sql);
    if(rs.next()){


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java.sql.SQLException: Before start of result set
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:910)
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<Context path = "/POS" docBase = "POS" debug = "5" reloadable = "true" crossContext = "true" workDir = &quo ......

MysqlЧÂÊÎÊÌâ - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql

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CREATE TABLE `ch1` (
  `id` int(10) unsigned zerofill NOT NULL AUTO_INCREMENT,
  `no` int(10) unsigned DEFAULT NULL,
  `dtime` datetime DEFAULT NULL,
  PRIMARY KEY (`id ......
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