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教你创建动态MSSQL 数据库表(1)_MySQL

程序员文章站 2024-02-18 10:15:28
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提示:这里其实并不需要其它的什么函数来支持,只需要使用MYSQL提供的一些SQL语句就可以了。 这里为了简单起见,以MYSQL的系统表USER为例,取出SELECT_PRIV这一列的所有可能值。 方法:SHOW COLUMNS FROM table_name LIKE enum_column_name 小写的部分需要根据你的情况改变。


这里其实并不需要其它的什么函数来支持,只需要使用MYSQL提供的一些SQL语句就可以了。
  这里为了简单起见,以MYSQL的系统表USER为例,取出SELECT_PRIV这一列的所有可能值。

  方法:SHOW COLUMNS FROM table_name LIKE enum_column_name

  小写的部分需要根据你的情况改变。

  程序: 


  //By SonyMusic(sonymusic@163.com)
  //HomePage(phpcode.yeah.net)
  $connect_hostname="localhost";
  $dbn下面是利用SQL语句创建数据库、表、存储过程、视图、索引、规则、修改表、查看数据等的方法。所要增加的控件如下:
  以下是引用片段:


  Imports System.Data
  Imports System.Data.SqlClient
  Public Class Form1
  Inherits System.Windows.Forms.Form
  Private ConnectionString As String = "Data Source=.;Initial Catalog=;User Id=sa;Password=;"
  Private reader As SqlDataReader = Nothing
  Private conn As SqlConnection = Nothing
  Private cmd As SqlCommand = Nothing
  Private AlterTableBtn As System.Windows.Forms.Button
  Private sql As String = Nothing
  Private CreateOthersBtn As System.Windows.Forms.Button
  #Region " Windows 窗体设计器生成的代码 "
  '窗体重写处置以清理组件列表。
  Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
  If disposing Then
  If Not (components Is Nothing) Then
  components.Dispose()
  End If
  End If
  MyBase.Dispose(disposing)
  End Sub
  Public Sub New()
  MyBase.New()
  InitializeComponent()
  End Sub
  Private components As System.ComponentModel.IContainer
  Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid
  Friend WithEvents CreateDBBtn As System.Windows.Forms.Button
  Friend WithEvents CreateTableBtn As System.Windows.Forms.Button
  Friend WithEvents CreateSPBtn As System.Windows.Forms.Button
  Friend WithEvents CreateViewBtn As System.Windows.Forms.Button
  Friend WithEvents btnAlterTable As System.Windows.Forms.Button
  Friend WithEvents btnCreateOthers As System.Windows.Forms.Button
  Friend WithEvents btnDropTable As System.Windows.Forms.Button
  Friend WithEvents btnViewData As System.Windows.Forms.Button
  Friend WithEvents btnViewSP As System.Windows.Forms.Button
  Friend WithEvents btnViewView As System.Windows.Forms.Button
  Private Sub InitializeComponent()

ame="mysql";
  $connect_username = "root";
  $connect_pass ="";
  $connect_id = mysql_connect($connect_hostname, $connect_username, $connect_pass);
  mysql_select_db($dbname);
  $query="show columns from user like 'select_priv'";
  $result=mysql_db_query($dbname,$query);
  $enum=mysql_result($result,0,"type");
  网管网bitsCN_com
  echo $enum."
";
  $enum_arr=explode("(",$enum);
  $enum=$enum_arr[1];
  $enum_arr=explode(")",$enum);
  $enum=$enum_arr[0];
  $enum_arr=explode(",",$enum);
  for($i=0;$i
  echo $enum_arr[$i]."
";
  }
  ?>