It's been a long time....

Hi, all!!

It's been a long time since the last time I posted here... Wow, almost 6 years!!

What have I been doing all this time, you may wonder... Well, I've been studying a lot and playing with other projects besides Npgsql, which btw is in excellent Shay Rojansky's hands.

So, what I've been up to, you may ask? Well... I've been playing with mobile development. More specifically Android Development. And I've already published some apps to Play Store. I'll talk more about them in future posts.

Just wanted to let you know that I'm back to blogging and will keep posting about my projects again.

Thanks for reading!

Comments

Npgsql Tips: Using " in (...)" queries with parameters list and "any" operator

Hi, all! We have received some users questions about how to send a list of values to be used in queries using the "in" operator. Something like: select foo, bar from table where foo in (blah1, blah2, blah3); Npgsql supports array-like parameter values and the first idea to have this working would try to use it directly: NpgsqlCommand command = new NpgsqlCommand("select * from tablee where field_serial in (:parameterlist)", conn); ArrayList l = new ArrayList(); l.Add(5); l.Add(6); command.Parameters.Add(new NpgsqlParameter("parameterlist", NpgsqlDbType.Array | NpgsqlDbType.Integer)); command.Parameters[0].Value = l.ToArray(); NpgsqlDataReader dr = command.ExecuteReader(); but unfortunately this won't work as expected. Npgsql will send a query like this: select * from tablee where field_serial in ((array[5,6])::int4[]) And Postgresql will complain with the followin...

Using Entity Framework 6 with Npgsql 2.1.0

UPDATE (2014-05-19): Marek Beneš noticed a problem in the default connection factory config. It is fixed now. Thanks, Marek! UPDATE (2014-02-20): I created a new post explaining how to get Npgsql 2.1.0. Although this post is about EF 6, I'd like to talk about our current situation to support both EF 6 and EF4.x which explain why there are some subtle changes between EF 4.x and EF 6.x App.config settings. Support for EF versions 4.x and 6.x Sometime after we started to work on Npgsql 2.1.0, we started to add code to support EF6 and decided to reorganize our Entity Framework support code. Shay created a pull request to organize this change and isolate the EF code out of core Npgsql code. The result was the creation of two separated assemblies: Npgsql.EntityFramework.dll for EF6 and above; Npgsql.EntityFrameworkLegacy.dll for EF4.x. Only when using Npgsql with EF6 you will need to reference Npgsql.EntityFramework.dll assembly. This is needed because the EF ...

Npgsql Code First Entity Framework 4.3.1 Sample

After reading the excellent article about entity framework on Postgresql by Brice Lambson, I decided to write this post to document my experience playing with Entity Framework 4.3.1 and Npgsql. This post will be an adaptation of the Code First To a New Database walkthrough in order to make it work with Npgsql. First Steps You should follow the first 4 steps of Code First To a New Database. Go ahead, I''l wait for you. Next steps Here is where the adaptation of the walkthrough begins. As Brice noted in his post, Npgsql currently doesn't support database creation. ( I'm working on that and hope to get news about it soon.) So, for while, you have to create the database manually. Those are the steps you have to do to create the database and the model: First, run this command in the terminal to create the database (or you can use pgAdmin if you prefer a GUI): > createdb ef_code_first_sample After that, you have to run the following commands ...

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