Biml on Cathrine Wilhelmsen

Generating SELECT statements in Biml using GetColumnList

Mon, 29 Apr 2019 11:25:20 +0200

In a previous blog post, we looked at how to generate SQL using Biml. (If you haven’t read that post, you may want to start there and then come back here.) In this post, we will go through how to generate SELECT statements using the Biml column method GetColumnList.

Using Biml column methods

Biml column methods return code fragments. These code fragments can be used as building blocks to generate custom T-SQL statements. For example, the GetColumnList method returns a list of columns, separated by commas, that you can use in a SELECT statement. You can filter the columns and customize the output by passing parameters.

Examples of GetColumnList code fragments

If you have a table with three columns, the default output will look something like this:

[PersonID], [FirstName], [LastName]

But what if you don’t want to select all three columns? Or what if you want to use an alias for your table? No problem! The customized output can look something like this instead:

p.FirstName, p.LastName

We will go through the different ways of customizing the output a little later in this post.

Generating SQL using Biml (T-SQL Tuesday #110)

Tue, 08 Jan 2019 22:07:19 +0100

The first T-SQL Tuesday of 2019 is hosted by Garry Bargsley (@gbargsley), and the topic is “Automate All the Things”. Garry wants to know what this phrase means to each of us. What do we want to automate? What is our go-to technology for automation? To me, this was super easy. Surprise, surprise! It’s Biml, of course 🤓 Since this post is part of T-SQL Tuesday, I wanted to go back to the basics and write about how you can generate SQL using Biml. But first, a little bit of background for those who are not that familiar with Biml.

Don't Repeat Your Biml - C# Extension Methods

Tue, 28 Aug 2018 17:56:19 +0200

In a previous blog post, we looked at how to use C#/VB Code Files in Biml. There are several benefits to moving custom C# code into separate files. It allows you to reuse that code across multiple projects and solutions. You can maintain the code in your editor of choice, taking advantage of intellisense and syntax highlighting. And finally, my personal favorite: you can create custom extension methods.

In this post, we will look at how to simplify our Biml projects by creating and using C# extension methods. We will build on the examples from the previous C#/VB Code Files in Biml blog post.

Biml for OData Source and Connection Manager in SSIS

Tue, 24 Jul 2018 11:39:48 +0200

As of July 2018, there is no built-in Biml support for OData. To work with OData in Biml, you have to create a custom source and connection manager. This requires more Biml code than built-in functions like OleDbSource and may look a little overwhelming at first. But don’t worry! You don’t have to start from scratch.

In this blog post, we will first look at the properties of the OData Connection Manager and how to script it in Biml. Then, we will do the same for the OData Source. Finally, we will tie it all together and create a complete SSIS package that you can use a starting point for your own projects.

Biml Annotations and ObjectTags

Thu, 08 Feb 2018 22:18:15 +0100

Biml objects have many built-in attributes. For example, all Tables have SchemaName and all Packages have ProtectionLevel. When your Biml solution starts to grow, you will quickly see the need for adding additional metadata that can be used in other Biml files. A common use case in Data Warehouse Staging projects is to store the source schema and source table name on your staging table objects. This allows you to use the source metadata in a higher tier Biml file that generates the SSIS packages to load the tables. To store and use this additional metadata, you can use Biml Annotations or ObjectTags.

Biml Annotations and ObjectTags are both Key/Value pairs. Annotations are String/String pairs intended for storing simple text metadata, while ObjectTags are String/Object pairs that can also store more complex metadata in .NET objects.

Don't Repeat Your Biml - Tiered Biml Files

Mon, 22 Jan 2018 12:00:39 +0100

Many Biml solutions start off very simple, with just a single Biml file that generates a few SSIS packages. Most developers quickly see the need for a more complex solution for multiple sources. One way to reuse code and apply the Don’t Repeat Yourself software engineering principle in Biml is to use Tiered Biml Files.

In addition to using Tiered Biml Files, there are four other main ways you can avoid repeating your Biml code:

Include Files
CallBimlScript
C#/VB Code Files
Transformers (BimlStudio feature only)

In this post, we will look at how to use Tiered Biml Files.

The Biml Book is here!

Fri, 22 Sep 2017 00:47:43 +0200

Woohoo! The Biml Book: Business Intelligence and Data Warehouse Automation is now available for pre-order from Amazon and Apress! 🥳

This is the first book I’ve co-authored, and I have to admit it’s a very strange feeling to see my name on the cover of a book. Am I allowed to say I’m quite proud? Oh, I’ll say it anyway. I’m proud and very honored to have written this book with such a talented group of people: Andy Leonard (@AndyLeonard), Scott Currie (@scottcurrie), Ben Weissman (@bweissman), Bill Fellows (@billinkc), Martin Andersson (@frysdisken), Peter Avenant (@PeterAvenant), Simon Peck (@biguynz), Reeves Smith (@SQLReeves), Raymond Sondak (@raymondsondak) and Jacob Alley.

Create your own BimlExpress Keyboard Shortcuts

Thu, 13 Apr 2017 13:43:09 +0200

Are you tired of right-clicking on your Biml files to Check Biml for Errors or to Generate SSIS Packages? Did you know that you can create your own BimlExpress Keyboard Shortcuts? 🤓

Why can't I create SSIS Project Parameters from Biml?

Fri, 27 May 2016 13:01:45 +0200

BIDS Helper and BimlExpress do not support creating SSIS project parameters from Biml out of the box. There are workarounds (and I have previously blogged about my solution for creating project parameters from Biml), but why is this not a standard feature in BIDS Helper or BimlExpress? Many people have asked about this, so I sat down with Biml creator Scott Currie (@ScottCurrie) to get the full story.

Why doesn’t BIDS Helper or BimlExpress emit SSIS project parameters from Biml?

Well, technically it could, but it shouldn’t. The user experience would have serious issues, leading to confusion, frequent errors, and the potential for data loss. How can that be?

Get Started with BimlExpress

Thu, 21 Apr 2016 17:25:08 +0200

Say welcome to BimlExpress - the newest, shiniest and completely free Biml toy! 🥳 I first mentioned this at SQLSaturday Vienna 2016 and have been waiting for the official release since then. I’m very happy that I can now send you all over to Varigence’s website to download the Visual Studio Extension!

What is BimlExpress?

BimlExpress is a free Visual Studio add-in for working with Biml in your SSIS projects. You can add and edit Biml files, and generate SSIS packages from Biml. The code editor has syntax coloring, error highlighting, Intellisense and a preview pane.

If you are already using BI Developer Extensions (previously known as BIDS Helper), you will see that BimlExpress is similar. You will find all the same Biml features as in BI Developer Extensions - just with a new and improved code editor. No more squiggly red lines, yay!

Which versions of Visual Studio does BimlExpress work with?

BimlExpress 2019 was released in May 2019. It works with Visual Studio 2010 - 2019.
BimlExpress 2018 was released in June 2018. It worked with Visual Studio 2010 - 2017.
BimlExpress 2017 was released in July 2017. It worked with Visual Studio 2010 - 2015.

Don't Repeat Your Biml - C#/VB Code Files

Thu, 28 Jan 2016 21:48:32 +0100

Do you use C#/VB classes and methods in your Biml projects? One solution is to create class nuggets <#+ … #>, but they can only be used in their containing Biml file. You can move class nuggets to separate files and include those files, but a more elegant solution is to use C#/VB Code Files.

In addition to using C#/VB Code Files, there are four other main ways you can avoid repeating your Biml code:

Include Files
CallBimlScript
Tiered Biml Files
Transformers (BimlStudio feature only)

In this post, we will look at how to use C#/VB Code Files.

Don't Repeat Your Biml - Include Files

Tue, 05 Jan 2016 21:07:54 +0100

Are you using Biml so you won’t have to do the same tasks over and over and over again in multiple SSIS packages? If so, you probably don’t want to write the same Biml code over and over and over again either. Instead, you can move common code to separate files, centralize and reuse these files in many projects, and update code in one file to make changes to all projects. One of the ways to apply this Don’t Repeat Yourself software engineering principle in Biml is to use Include Files.

In addition to using Include Files, there are four other main ways you can avoid repeating your Biml code:

CallBimlScript
Tiered Biml Files
C#/VB Code Files
Transformers (BimlStudio feature only)

In this post we will look at how to use Include Files.

Create SSIS Project Parameters from Biml

Wed, 25 Nov 2015 15:16:24 +0100

If you are using BIDS Helper or BimlExpress to generate SSIS packages in the Project Deployment model, you have probably noticed that it is not possible to create project parameters from Biml. You can write Biml for the project and project parameters, but BIDS Helper / BimlExpress will only generate the SSIS packages for you and not the SSIS project parameters. The recommended solution is that you create the project parameters manually before you generate your SSIS packages from Biml.

(Want to know why? Read Scott Currie’s explanation in my blog post Why can’t I create SSIS Project Parameters from Biml?)

However, if you are a lazy developer like me, you probably don’t want to create and update project parameters manually. Perhaps you want to automatically create or update project parameters based on some metadata? You can do that!

Let’s take a look at a (semi-hardcoded, semi-hack) solution for creating SSIS project parameters from Biml in BIDS Helper / BimlExpress 🤓

Import Metadata in Biml using GetDatabaseSchema

Sun, 12 Jul 2015 21:45:13 +0200

One of the main tasks in Biml projects is to import source metadata. The recommended method is GetDatabaseSchema. This method returns an ImportResults object that contains SchemaNodes (schema metadata) and TableNodes (table and view metadata).

Don't Repeat Your Biml - CallBimlScript

Mon, 23 Feb 2015 21:04:10 +0100

In addition to using CallBimlScript, there are four other main ways you can avoid repeating your Biml code:

Include Files
Tiered Biml Files
C#/VB Code Files
Transformers (BimlStudio feature only)

In this post we will look at how to use CallBimlScript with Parameters.

Package Configurations and Connection Managers in Biml

Tue, 17 Jun 2014 19:40:56 +0200

At work we wanted to start using Biml to speed up development in our existing projects without making too many changes at once. I decided to start by writing Biml files that generates SSIS packages exactly like the ones we already have so we can implement changes faster, and step one was to figure out how to create Package Configurations and Connection Managers in Biml:

Create an XML configuration file Package Configuration
Create the Connection Manager specified in the XML configuration file
Create SQL Server Package Configurations that use the Connection Manager specified in the XML configuration file
Create Connection Managers specified in the [SSIS Configurations] table in SQL Server
Create a Parent package variable

I recommend reading Understanding Integration Services Package Configurations by Rafael Salas (@RafSalas) and Getting Started with BimlScript by Paul S. Waters (@pswaters) if you’re not already familiar with the basics of SSIS Package Configurations and Biml.

SQL Server, SSIS and Biml Data Types

Tue, 27 May 2014 18:33:04 +0200

The table below is a simplified mapping between SQL Server, SSIS and Biml Data Types. It does not include all possible mappings or all data types, but is meant as a quick reference while developing and learning Biml. I mainly created it as a cheat sheet for myself, but I hope other Biml developers will find it useful!

Can't remember this post's URL? Neither can I 😅 You can use this short URL instead: cathrinew.net/BimlDataTypes

Cheat Sheet for SQL Server, SSIS and Biml Data Types

SQL Server	SSIS	Biml
bigint	DT_I8	Int64
binary	DT_BYTES	Binary
bit	DT_BOOL	Boolean
char	DT_STR	AnsiStringFixedLength
date	DT_DBDATE	Date
datetime	DT_DBTIMESTAMP	DateTime
datetime2	DT_DBTIMESTAMP2	DateTime2
datetimeoffset	DT_DBTIMESTAMPOFFSET	DateTimeOffset
decimal	DT_NUMERIC	Decimal
float	DT_R8	Double
geography	DT_IMAGE	Object
geometry	DT_IMAGE	Object
hierarchyid	DT_BYTES	Object
image (*)	DT_IMAGE	Binary
int	DT_I4	Int32
money	DT_CY	Currency
nchar	DT_WSTR	StringFixedLength
ntext (*)	DT_NTEXT	String
numeric	DT_NUMERIC	Decimal
nvarchar	DT_WSTR	String
nvarchar(max)	DT_NTEXT	String
real	DT_R4	Single
rowversion	DT_BYTES	Binary
smalldatetime	DT_DBTIMESTAMP	DateTime
smallint	DT_I2	Int16
smallmoney	DT_CY	Currency
sql_variant	DT_WSTR	Object
text (*)	DT_TEXT	AnsiString
time	DT_DBTIME2	Time
timestamp (*)	DT_BYTES	Binary
tinyint	DT_UI1	Byte
uniqueidentifier	DT_GUID	Guid
varbinary	DT_BYTES	Binary
varbinary(max)	DT_IMAGE	Binary
varchar	DT_STR	AnsiString
varchar(max)	DT_TEXT	AnsiString
xml	DT_NTEXT	Xml

(* These data types will be removed in a future version of SQL Server. Avoid using these data types in new projects, and try to change them in current projects.)