教你创建动态MSSQL 数据库表(1)_MySQL
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:
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//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");
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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]."
";
}
?>
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