用VS 2008 VB检测MySQL字段中的零填充

使用.NET连接器：

MySQL中的字段设置为：

decimal(6) zerofill not null

---

如何在VB中检测“zerofill”标志？

您可以使用

在tablename中显示列来获取列信息，此查询以以下形式返回：

field         type                          null   key   default    extra
fieldname     int(10) unsigned zerofill      no            0    

因此，若在int中返回的字符串包含“zerofill”字符串，则要获取标志zerofill，必须在type中查找：

像这样的东西可以达到目的：

static void Main(string[] args)
{
    dim conn as MySqlConnection
    conn = new MySqlConnection
    conn.ConnectionString = "Server = yourserver; Database = yourdb; Uid = youruser;Pwd = yourpassword;"

    conn.Open

    MySqlCommand cmd = new MySqlCommand
    cmd.Connection = conn
    cmd.CommandText = "SHOW COLUMNS IN yourtable"
    cmd.CommandType = CommandType.Text

    dim reader as MySqlDataReader
    reader = cmd.ExecuteReader

    while reader.Read
        Console.WriteLine("Field:{0}, zerofill:{1}",reader("field"),if(reader("type").ToString().Contains("zerofill"),true,false))
    end while
    conn.Close()
}

您可以使用
在tablename中显示列
来获取列信息，此查询返回以下形式的内容：

field         type                          null   key   default    extra
fieldname     int(10) unsigned zerofill      no            0    

因此，若在int中返回的字符串包含“zerofill”字符串，则要获取标志zerofill，必须在type中查找：

像这样的东西可以达到目的：

static void Main(string[] args)
{
    dim conn as MySqlConnection
    conn = new MySqlConnection
    conn.ConnectionString = "Server = yourserver; Database = yourdb; Uid = youruser;Pwd = yourpassword;"

    conn.Open

    MySqlCommand cmd = new MySqlCommand
    cmd.Connection = conn
    cmd.CommandText = "SHOW COLUMNS IN yourtable"
    cmd.CommandType = CommandType.Text

    dim reader as MySqlDataReader
    reader = cmd.ExecuteReader

    while reader.Read
        Console.WriteLine("Field:{0}, zerofill:{1}",reader("field"),if(reader("type").ToString().Contains("zerofill"),true,false))
    end while
    conn.Close()
}