basketweaving for the mind : sqlserver

Demos and Links from Edge of the Web, Nov’08 Perth

nhodge — Tue, 11 Nov 2008 06:08:11 GMT

During the 50 minutes of presentation (including at least 9 ICHC images), I demonstrated the following bits and pieces of open source and or free Microsoft bits.

Demo set 1: Web Standards

Live Mesh Mobile : take photo to mesh on laptop

MacOS X 10.5 client available too [not demo’d]

DataModelBrowser to apis.mesh.com; showing REST/JSON/APP [part of Live Framework SDK]
Oomph: Microformats toolkit (source on codeplex.com) incorporating:

LiveWriter; hCard plugin; publish; show IE plugin, same site with Firefox Tail

Demo set 2: PHP, SQLServer 2008 & IIS7

Demo set 3: IronPython

IronPython; ipy hello world winforms
using as aspx as "code behind" and ASP.NET
F# integration with via .NET compiled .dll (calling from IronPython)

Demo set 4: IronRuby

IronRuby; flickr.net example from John Lam’s PDC2008 session
Photoviewer; using local Chiron, browser, ruby in browser doing HTML/DOM

Demo set 5: Silverlight

Silverlight 2 tools for Visual Studio now support Visual Studio Express

Silverlight 2 also supporting Eclipse (see, competition is a good thing)

Silverlight Toolkit, run from chrome-less Google Chrome (contains Microsoft Windows Template Lib)

October 2008 Update: Microsoft SQL Server 2005 Driver for PHP

nhodge — Mon, 20 Oct 2008 00:44:10 GMT

Now available, prebuilt is available for download

Source is also available from Codeplex: CodePlex

SQL Server Driver for PHP: Last Inserted Row ID

nhodge — Mon, 22 Sep 2008 16:56:00 GMT

After a mysql_query with an INSERT statement, a quick call to mysql_insert_id provides the ID of the last inserted row.

$lastRow = mysql_insert_id($link);

How do you accomplish the same with the SQL Server Driver for PHP?

In this extended example, it’s a simple matter of adding some extra SQL to the INSERT statement, and popping the result from the query.

<?php 

    function lastInsertId($queryID) {
        sqlsrv_next_result($queryID);
        sqlsrv_fetch($queryID);
        return sqlsrv_get_field($queryID, 0);
    } 

    $serverName = '.\SQLEXPRESS';
    $connectionInfo = array( "Database"=>"database" ); 

    /* Connect using Windows Authentication. */
    $conn = sqlsrv_connect( $serverName, $connectionInfo );
    if( $conn === false )
    {
        echo "Unable to connect.</br>";
        die( print_r( sqlsrv_errors(), true));
    } 

    /* Define the Transact-SQL query. Use question marks as parameter placeholders. */
    $insertSQL = "INSERT INTO table
              (message, fromuser) 
              VALUES (? , ?) "; 

    /* Initialize $message and $from */
    $message = "Please call me"; 
    $fromuser = "Nick Hodge"; 

    /* special Transact-SQL addition to the SQL insert statement. It will return the last insert ID */
    $insertSQL .= "; SELECT SCOPE_IDENTITY() AS IDENTITY_COLUMN_NAME"; 

    /* Execute the statement with the specified parameter values. */
    $stmt1 = sqlsrv_query( $conn, $insertSQL, array($message, $fromuser));
    if( $stmt1 === false )
    {
        echo "Could not retrieve last inserted row ID.</br>";
        die( print_r( sqlsrv_errors(), true));
    } 

    echo "The last inserted row ID is ".lastInsertId($stmt1); 

?>

The magic happens in the addition of $insertSQL .= "; SELECT SCOPE_IDENTITY() AS IDENTITY_COLUMN_NAME"; appended to the INSERT query.

Also note the use of a parameterized query. To reduce the risk of SQL injection nastiness, this nifty query does all the heavy lifting.

SQL Server Driver PHP commands compared with MySQL PHP commands

nhodge — Mon, 22 Sep 2008 09:20:01 GMT

Over the years I have used the inbuilt PHP drivers for MySQL. The best mechanism for mapping the two methods is a simple table laying out a comparison between the two systems.

Note this is not a SQLServer vs. MySQL argument, just for information and reference.

As the SQLServer drivers change, I will update this page.

Note:

sqlsrv_client_info( )

DriverDllName: SQLNCLI.DLL DriverODBCVer: 03.52 DriverVer: 09.00.3042 ExtensionVer: 1.0.1015.0

Description	SQLServer Driver for PHP	MySQL Functions
Begins a transaction	sqlsrv_begin_transaction( resource $conn )	START TRANSACTION, BEGIN, COMMIT, ROLLBACK can be executed as statements in mysql_query
Cancels a statement; discards any pending results for the statement	sqlsrv_cancel( resource $stmt )	-
Provides information about the client	sqlsrv_client_info( resource $conn )	mysql_get_client_info ( void )
Closes a connection. Frees all resources associated with the connection	sqlsrv_close( resource $conn )	mysql_close ([ resource $link_identifier ] )
Commits a transaction	sqlsrv_commit( resource $conn )	START TRANSACTION, BEGIN, COMMIT, ROLLBACK can be executed as statements in mysql_query
Changes error handling and logging configurations	sqlsrv_configure( string $setting, int $value )	-
Creates and opens a connection	sqlsrv_connect( string $serverName [, array $connectionInfo )	mysql_connect ([ string $server [, string $username [, string $password [, bool $new_link [, int $client_flags ]]]]] )
Returns error and/or warning information about the last operation	sqlsrv_errors( [int $errosAndOrWarnings] )	mysql_errno ([ resource $link_identifier ] ) mysql_error ([ resource $link_identifier ] )
Executes a prepared statement with sqlsrv_prepare	sqlsrv_execute( resource $stmt )	-
Makes the next row of data available for reading	sqlsrv_fetch( resource $stmt )	-
Retrieves the next row of data as a numerically indexed array, an associative array, or both	sqlsrv_fetch_array( resource $stmt [, int $fetchType] )	mysql_fetch_array ( resource $result [, int $result_type ] )
Retrieves the next row of data as an object	sqlsrv_fetch_object( resource $stmt [, string $className] )	mysql_fetch_object ( resource $result [, string $class_name [, array $params ]] )
Returns field metadata	sqlsrv_field_metadata( resource $stmt )	See mysql_field_type ( resource $result , int $field_offset ) specifically the Example and mysql_fetch_field ( resource $result [, int $field_offset ] )
Closes a statement. Frees all resources associated with the statement	sqlsrv_free_stmt( resource $stmt )	mysql_free_result ( resource $result )
Returns the value of the specified configuration setting	sqlsrv_get_config( string $setting )	mysql_get_client_info ( void )
Retrieves a field in the current row by index. The PHP return type can be specified	sqlsrv_get_field( resource $stmt, int $fieldIndex [, int $getAsType] )	similar to mysql_result ( resource $result , int $row [, mixed $field ] )
Makes the next result available for processing	sqlsrv_next_result( resource $stmt )	-
Retrieves the number of fields in an active result set	sqlsrv_num_fields( resource $stmt )	mysql_num_fields ( resource $result )
Prepares a Transact-SQL query without executing it. Implicitly binds parameters, executed with sqlsrv_execute	sqlsrv_prepare( resource $conn, string $tsql[ ,array $params[, array $options]] )	-
Prepares and executes a Transact-SQL query.	sqlsrv_query( resource $conn, string $tsql[ , array $params[, array $options]] )	mysql_query ( string $query [, resource $link_identifier ] )
Rolls back a transaction.	sqlsrv_rollback( resource $conn )	START TRANSACTION, BEGIN, COMMIT, ROLLBACK can be executed as statements in mysql_query
Returns the number of modified rows.	sqlsrv_rows_affected( resource $stmt )	mysql_affected_rows ([ resource $link_identifier ] )
Sends up to eight kilobytes (8 KB) of data to the server with each call to the function.	sqlsrv_send_stream_data( resource $stmt )	-
Provides information about the server.	sqlsrv_server_info( resource $conn )	mysql_get_server_info ([ resource $link_identifier ] )

MySQL to SQLServer 2008 Express [redux]

nhodge — Mon, 01 Sep 2008 08:58:35 GMT

Last week, the SQLServer 2008 Express team released a download with the SQL Server Management Studio. A few weeks ago, I blogged how to export/import the .sql from one system to another.

Having installed the Management Studio, I noticed that I could import data into my new SQLServer database:

Having previously installed the MySQL .Net connector, all I had to do was fill in the blanks. Server (with remote access enabled), database, username and password.

The tricky part is mapping MySQL datatypes to SQLServer datatypes, and importing. Note that with a non-Express version of SQL Server Management Studio, you can save the schemas and automate the import.

Download it and give it a whirl!

MySQL to SQLServer [Express] 2008

nhodge — Mon, 18 Aug 2008 08:44:00 GMT

Being a historical LAMP guy, the first problem is how do I get my data across?

The release of free SQLServer Express 2008, with the integration with Vista x64, PHP and Visual Studio is an attractive proposition. But: schema and data first.

1. Using PHPMyAdmin, I exported the tables as SQL; and specifically ANSI SQL:

2. Edit the SQL

This is the ugly part. There were four main changes:

Change syntax of the CREATE TABLE to place tables inside the correct namespace (eg: database.dbo.table) and a (ouch) find and replace on INSERTS
Changing the syntax of the PRIMARY KEY
Adding SQLServer Transact SQL (T-SQL) 'go' statements after the table creation and insertion blocks
Changing the column types to match SQLServer types

3. SQLCMD

SQLCMD is the command line interface to your SQLServer instance.

Simply typing SQLCMD –S MAJORSTAR\SQLExpress -E -i export.sql

Where SQLExpress is the instance on a machine called MAJORSTAR, -E to login with my current credentials and -i to run the export.sql file.

With further research, the -d (to set db name) and other like tweaking, the amount of editing as completed in step 2 could have been avoided.

In a few short steps, I had imported my schema and data into SQLServer Express 2008

For more indepth articles, The Guide to Migrating from MySQL to SQL Server 2005 looks informative