Retrieving SQL Server 2000 Constraints Information using Client-side JavaScript - How to retrieve all rules from all databases of a SQL Server 2000 instance using JavaScript
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Now, let us try to develop a simple script (JavaScript) which shows the technique for retrieving all SQL Server rules from an entire SQL Server 2000 instance. The entire code for the sample is as follows:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title></title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/
intellisense/ie5">
<script id="clientEventHandlersJS" language="javascript">
<!--
functionButton1_onclick() {
var locator = new ActiveXObject ("WbemScripting.SWbemLocator");
var service = locator.ConnectServer(".","rootMicrosoftSQLServer");
var properties = service.ExecQuery("SELECT * FROM MSSQL_Rule");
var e = new Enumerator (properties);
document.write("<table border=1>");
dispHeading();
for (;!e.atEnd();e.moveNext ())
{
var p = e.item ();
document.write("<tr>");
document.write("<td>" + p.Name + "</td>");
document.write("<td>" + p.Text + "</td>");
document.write("<td>" + p.DatabaseName + "</td>");
document.write("</tr>");
}
document.write("</table>");
}
functiondispHeading()
{
document.write("<thead>");
document.write("<td>Name</td>");
document.write("<td>Text</td>");
document.write("<td>Database</td>");
document.write("</thead>");
}
//-->
</script>
</head>
<body> <INPUT id="Button1" type="button" value="Button" name="Button1"
language="javascript" onclick="return Button1_onclick()">
</body>
</html>
The above code would automatically list all the rules existing in an entire SQL Server 2000 instance belonging to the client. To retrieve this information, I used a built-in class, “MSSQL_Rule” available in the “rootMicrosoftSQLServer” namespace. The “for” loop I used in the above code iterates for every rule present in the SQL Server database and finally retrieves only the properties of that rule.
Any comments, suggestions, bugs, errors, feedback etc. are highly appreciated at jag_chat@yahoo.com.
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