MySQL trigger database synchronization data method

Last Update:2017-01-13 Source: Internet

Author: User

Tags mysql tutorial php tutorial name database

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MySQL Tutorial triggers database tutorial Synchronizing data methods

function res () {
document.getElementById ("TaB2"). Value = "Pre_" +document.getelementbyid ("Tab1"). Value;
}
</script>

<body>
<form action= "#" method= "Post" Name= "Form1" target= "_blank" id= "Form1" >
Database name
<input name= "Dbtbalename" type= "text" id= "Dbtbalename" value= "dbname"/>
<br>
Driver table
<input name= "Tab1" type= "text" id= "Tab1"/> <br>
The table being triggered
<input name= "tab2" type= "text" id= "TAB2"/><br>
<input type= "Submit" name= "Submission" value= "submitted"/><br>
</form>
<?php Tutorial
/**
*-------------------Documentation Comments------------------------------------------
* The author * tatsu *qq 85089479*email qianshuei@163.com*
* Create Time *2006-012-*
* Function Description * Data synchronization trigger Generation tool *
* Last Modified Time *2006-12-*
* -------------------------------------------------------------------
*/
$dbName = "localhost"; Host Name
$dbUserName = "root"; User name
$dbpassword = "admin"; Password
$dbTbaleName = $_post[' dbtbalename ']; Database name
$tab 1 = $_post[' tab1 ']; The table executed
$tab 2 = $_post[' tab2 ']; The table being triggered
$conn = mysql_connect ($dbName, $dbUserName, $dbpassword) or Die ("Please check your host name database username and password");
mysql_select_db ($dbTbaleName, $conn) or Die ("Database not yet connected");
mysql_select_db ("$dbTbaleName");
$result = mysql_query ("SELECT * from $tab 1")//Get the result of a table query
Or Die ("Query failed:".) Mysql_error ());
Echo ("<br>");
$i = 1;//Here is the symbol for replacing the last column name, so =1 <>0
echo "CREATE TRIGGER". $tab 1. "_insert before insert on $tab 1<br>";
echo "For each row begin<br>";
echo "INSERT into $tab 2 set<br>";
while ($i < Mysql_num_fields ($result)) {//column number of loops

$meta = Mysql_fetch_field ($result);//Get a diagonal of the information about the column
if (! $meta) {
echo "No information available<br/>n";
}
The following output is the trigger program column information
echo "<pre>
' $meta->name ' =new. $meta->name,
</pre> ";
$i + +;
}
$meta = Mysql_fetch_field ($result);
echo "<pre>
' $meta->name ' =new. $meta->name;
</pre> ";
Mysql_free_result ($result);
Echo ("END;");

// -----------------------------------------------------------------
$result = mysql_query ("SELECT * from $tab 1")
Or Die ("Query failed:".) Mysql_error ());
$i = 1;
if ($i < Mysql_num_fields ($result)) {

$meta = Mysql_fetch_field ($result);

// -----------------------------------------------------------------
/**
* CREATE TRIGGER ' Tri_del ' before DELETE on ' AAA '
* For each row BEGIN
* DELETE from BBB WHERE ID =old.id;
*/
Echo ("<br>");

echo "CREATE TRIGGER". $tab 1. "_del before DELETE on $tab 1<br>";
echo "For each row begin<br>";

echo "DELETE from $tab 2 WHERE $meta->name =old. $meta->name;<br>";
Echo ("END;");

}
// -----------------------------------------------------------------
Echo ("<br>");
/**
* CREATE TRIGGER ' up_date ' before UPDATE on ' AAA '
* For each row BEGIN
* UPDATE BBB Set a1 = New.a1, a2=new.a2 where id = new.id;
* END;
*/
$result = mysql_query ("SELECT * from $tab 1")
Or Die ("Query failed:".) Mysql_error ());
/**
* Get column metadata
*/
$i = 1;
echo "CREATE TRIGGER". $tab 1. "_update before update on $tab 1<br>";
echo "For each row begin<br>";
echo "UPDATE $tab 2 set<br>";
while ($i < Mysql_num_fields ($result)) {

$meta = Mysql_fetch_field ($result);
if (! $meta) {
echo "No information available<br/>n";
}
echo "<pre>
' $meta->name ' =new. $meta->name,
</pre> ";
$i + +;
}
$meta = Mysql_fetch_field ($result);
echo "<pre>
' $meta->name ' =new. $meta->name
</pre> ";
Mysql_free_result ($result);
// -----------------------------
$result = mysql_query ("SELECT * from $tab 1")
Or Die ("Query failed:".) Mysql_error ());
$i = 1;
if ($i < Mysql_num_fields ($result)) {

$meta = Mysql_fetch_field ($result);
Echo ("where $meta->name = new. $meta->name;<br>");

Echo ("END;");

}
?>

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