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MSSQL is Coming to Linux Are You Ready? Nem W. Schlecht

MSSQL is coming to Linux!! LAMP= Big things are coming! MSSQL is coming to Linux!! LAMP= Linux Apache MySQL/MariaDB/MSSQL PHP/Perl/Python Big news! Microsoft usually doesn’t like support non-Microsoft operating systems

So what??? Completely free MSSQL SQL Express Linux VirtualBox Windows Server 2012 (eval) VirtualBox + Puppet/Ancible = quick dev environments

Some questions… What won’t be there? Clustering Access to registry values SSMS (on Linux) Too reliant on underlying windows OS VisualStudio on Linux IS a possibility!

Most things should work Some answers Easy install apt-get install mssql-server Most things should work Replication Mirroring HA Backups Linux has *much* better underlying filesystems

Just the database engine Some answers Just the database engine No Reporting Services No Analysis Services For now…

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What about now? What can we do now? Port applications to MSSQL Access MSSQL from Linux

Use linked servers on MSSQL FreeTDS library on Linux First steps Use linked servers on MSSQL Connect to Linux databases FreeTDS library on Linux Yes! You can access MSSQL from Linux already!

Connect to any DB with an ODBC connector Linked Servers Connect to any DB with an ODBC connector MySQL PostgreSQL SQLite

Link to external database Linked Servers Link to external database Install DB OBCD driver Connect to DB Add Linked Server Query away

Linked Servers OPENQUERY() Query external database

Linked Servers - SELECT FROM OPENQUERY(MySQLdb, ' SELECT id , name , age , address , active FROM users WHERE active = "y" ');

Linked Servers - INSERT (What?) INSERT INTO OPENQUERY(MySQLdb, ' SELECT id , name , age , address FROM users WHERE 1=0 ') VALUES ( 'nem' , 41 , '123 Town Street, Anycity USA, 12345' );

Linked Servers - UPDATE OPENQUERY(MySQLdb, ' SELECT id , name , age , address FROM users WHERE name = "nem" ') SET age = 41;

Linked Servers - DELETE OPENQUERY(MySQLdb, ' SELECT id , name , age , address FROM users ') WHERE name = ‘nem’ ;

Linked Servers - Copy Table SELECT name , age , address , active INTO users FROM OPENQUERY(MySQLdb, ' SELECT id , name , age , address FROM users ');

Linked Servers - Fun Stuff Join a MySQL table to an SQLite table Connect to a MySQL database over an SSH tunnel Use VIEWs to simplify OPENQUERY

Linked Servers - Demo Demo

FreeTDS library Connect to MSSQL Servers from Linux (and Mac) Use: PHP Perl Python Ruby Command Line Utilities Bash Scripts

FreeTDS Configuration /etc/freetds/freetds.conf [global] tds version = auto text size = 64512 client charset = UTF-8 [localdb] host = localhost instance = MSSQLSERVER port = 1433 tds version = 8.0

FreeTDS Configuration (multiple names) [localdb] host = localhost instance = MSSQLSERVER port = 1433 tds version = 8.0 [appdevdb]

FreeTDS Configuration Instance [appqadb] host = localhost instance = APPQA port = 14331 tds version = 8.0

FreeTDS Utilities tsql defncopy datacopy Test SQL connection, but can run any SQL defncopy Print out CREATE statement for SQL object datacopy Copy data between servers

FreeTDS Utilities freebcp fisql osql bcp clone Interactive SQL shell OSQL clone (uses ODBC)

FreeTDS Utilities Demos

FreeTDS Library Uses existing language database API

FreeTDS Library API (Perl) #!/usr/bin/perl use DBI; $db = "nemdev"; my $dbh = DBI->connect("dbi:Sybase:$db" , "$ENV{DBI_USER}" , "$ENV{DBI_PASS}") || die "No DB Connect"; $dbh->do("USE tempdb"); $dbh->do("DROP TABLE test_table"); $dbh->do("CREATE TABLE test_table (test_field VARCHAR(10))");

FreeTDS Library API (Perl cont.) my $sth = $dbh->prepare(" INSERT INTO test_table (test_field) VALUES (?) "); my(@insdata)=qw(this is just some text); for (@insdata) { $sth->execute($_); } $sth->finish();

FreeTDS Library API (cont.) $sth = $dbh->prepare(" SELECT test_field FROM test_table ORDER BY test_field "); $sth->execute(); while (my @row = $sth->fetchrow()) { print "Row data: @row\n"; } $sth->finish(); $dbh->disconnect();

FreeTDS Library API (PHP) <?php $link = mssql_connect('nemdev', 'nem', 'S3cr3t!'); if (!$link) die('Unable to connect!'); if (!mssql_select_db(tempdb', $link)) die('Unable to select database!'); $result = mssql_query('SELECT test_field FROM test_table'); while ($row = mssql_fetch_array($result)) { var_dump($row); } mssql_free_result($result); ?>

Questions? Wake Up!

Contact Info Nem W. Schlecht Email: nemws1@gmail.com Twitter: @nemws1 PASS Fargo Chapter sqlpass.org – search for "Fargo“ http://sqlfargo.sqlpass.org/