npgsql

I'm trying to use LINQ with Npgsql 2.0.11 in a .NET v3.5 project. I'm trying my first simple query from a data table, and I've found that the syntax sent to Postgresql is SQL Server syntax, not Pgsql syntax, causing the server to throw a syntax error. I have added the factory generation to the project's App.config as suggested by the documentation: <system.data> <DbProviderFactories> <add name="Npgsql Data Provider" invariant="Npgsql" support="FF" description=".Net Framework Data Provider for Postgresql" type="Npgsql.NpgsqlFactory, Npgsql, Version=2.0.11.0, Culture=neutral, PublicKeyToken

scratching my head on this. There's a similar question that might be related at "function does not exist," but I really think it does and PostgreSQL function does not exist but the answer(s) does not seem very obvious. PostgreSQL 9.5. I have an Npgsql-based membership query that looks like this: using (var conn = new NpgsqlConnection(ConnectionString)) { conn.Open(); using (var comm = new NpgsqlCommand("get_user_by_username", conn)) { comm.CommandType = CommandType.StoredProcedure; comm.Parameters.Add("_user_name", NpgsqlDbType.Varchar, 250).Value = username; comm.Parameters.Add("_application

Im using visual studio, postgresql database and ado.net entity data model. In the connectionstring, Im unable set MultipleActiveResultSets=True . Usually when I connect to sql server with MultipleActiveResultSets=True , it works fine. but i cannot set the same with postgresql database. When I use this, I got the following error There is already an open DataReader associated with this Command which must be closed first. How do I solve this problem. Multiple Active Result Sets (MARS) is a feature introduced in SQL Server 2005 and is not available in other database systems like postgres so you

I have updated my ASP.NET app from NpgSQL 2.2.5 to 3.0.1. In the breaking changes it's specified that they have removed the Preload Reader support. So I remove it from the string connection. Testing my web app, I got the error "An operation is already in progress." specially in the linq query like this: var plugins = from p in _pluginRepository.GetPlugins() // this method return this: GetAll().OrderBy(p => p.Created) join e in _userPluginRepository.GetByUserId(user.Id).ToList() on p.Id equals e.Plugin.Id into pe from e in pe.DefaultIfEmpty() select new PluginViewModel { Active = e != null,

I'm using Fluent NHibernate to configure my mappings everything works when reading data but when trying to insert or update records that have a Postgresql type of Time I get the error message "ERROR: 42804: column \"run_time\" is of type time with time zone but expression is of type timestamp without time zone" It looks like NHibernate might be confused on which DbType to convert the DateTime to as you can see from PostgreSQL and C# Datatypes that there are several DbTypes that DateTime map to. I also tried specifying a custom type for this column from IUserType but on the NullSafeSet override

Passing a null value using Npgsql looks something like this: using (NpgsqlCommand cmd = new NpgsqlCommand("insert into foo values (:TEST)", conn)) { cmd.Parameters.Add(new NpgsqlParameter("TEST", NpgsqlDbType.Varchar)); cmd.Parameters[0].Value = DBNull.Value; cmd.ExecuteNonQuery(); } Which works fine. The new Npgsql 4.0 documentation recommends declaring parameters with a strong datatype, like this: using (NpgsqlCommand cmd = new NpgsqlCommand("insert into foo values (:TEST)", conn)) { cmd.Parameters.Add(new NpgsqlParameter<string>("TEST", NpgsqlDbType.Varchar)); cmd.Parameters[0].Value =

I have a DefaultAttribute defined like so: [AttributeUsage(AttributeTargets.Property)] public class DefaultAttribute : Attribute { /// <summary> /// Specifies this property has a default value upon creation. /// </summary> /// <param name="defaultValue">The default value of the property.</param> /// <param name="useAsLiteral">Set to true if the value is <em>not</em> quoted in the DDL.</param> public DefaultAttribute(object defaultValue, bool useAsLiteral = false) { DefaultValue = defaultValue; UseAsLiteral = useAsLiteral; } public object DefaultValue { get; private set; } /// <summary> ///

How do I define a postgis 'geography' type in my C# class model so that OrmLite can easily pass it through to Postgresql so I can run spatial queries in addition to saving spatial data to the 'geography' column? The best library is NetTopologySuite for this case; you can use like this; protected GisSharpBlog.NetTopologySuite.Geometries.Geometry _geom; public GisSharpBlog.NetTopologySuite.Geometries.Geometry Geom { get { return _geom; } set { _geom = value; } } protected string _geomwkt; public virtual string GeomWKT { get { if (this.Geom != null) return this.Geom.ToText(); else return ""; }