mysql中的坑

由于order是mysql数据库的关键字,因此在查询(增删改查)的时候,该表明要用反引号括起来--->``(也就是1左边的按键)

example:  select * from `order` where edi_status=1

使用Jdbc去读取远程数据库表里的时间字段,用ResultSet的实例getTimestamp("")才能获取到时分秒,getDate("")是获取不到的;

新增的时候,也是如此:如Timestamp timestamp = new Timestamp(new Date().getTime());
                                            ps.setTimestamp(?, timestamp);

返回新增自增的ID:

PreparedStatement ps = null;
		try {
			connection=getConnection();
			ps = connection.prepareStatement(sql, PreparedStatement.RETURN_GENERATED_KEYS); 
			ps.setString(1,batchNo);
			ps.setString(2,"01");
			ps.setString(3,"01");
			ps.setInt(4,1);
			Timestamp timestamp = new Timestamp(new Date().getTime());
			ps.setTimestamp(5, timestamp);
//			ps.setDate(5,new java.sql.Date(new Date().getTime()));
			ps.setInt(6,0);
			ps.executeUpdate();
			
			ResultSet rs = ps.getGeneratedKeys(); 
			if (rs.next()) { 
				long id = rs.getLong(1);
				return id;
			}

 

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