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POUsing npgsql to call a function that takes character as parameter
 

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  1. POUsing npgsql to call a function that takes character as parameter
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    <p>I am trying to use Npgsql to invoke a function (stored procedure) that takes a CHARACTER as parameter, but it doesn't work. If I declare the same function without parameters, or with an INTEGER parameter, I get the result sets that I want. When I declare the parameter as CHARACTER, it stops working. What is wrong?</p> <p>Here is the code of my function:</p> <pre><code>CREATE OR REPLACE FUNCTION testrefcursor1(in xxx character varying(10)) RETURNS SETOF refcursor AS $$ DECLARE ref1 refcursor; ref2 refcursor; BEGIN OPEN ref1 FOR SELECT * FROM accounts; RETURN NEXT ref1; OPEN ref2 FOR SELECT * FROM accounts; RETURN NEXT ref2; RETURN; END; $$ LANGUAGE plpgsql; </code></pre> <p>And here is the C# code that I am using:</p> <pre><code>var connection = new Npgsql.NpgsqlConnection(connectionString.ConnectionString); connection.Open(); var trans = connection.BeginTransaction(); var command = new Npgsql.NpgsqlCommand("testrefcursor1", connection); command.CommandType = System.Data.CommandType.StoredProcedure; var parameter = command.CreateParameter(); parameter.ParameterName = "xxx"; parameter.DbType = System.Data.DbType.String; parameter.Value = "10"; command.Parameters.Add(parameter); var da = new Npgsql.NpgsqlDataAdapter(command); var ds = new System.Data.DataSet(); da.Fill(ds); trans.Commit(); connection.Close(); </code></pre> <p>I already tried declaring the parameter as CHARACTER, CHARACTER(10), CHARACTER VARYING and CHARACTER VARYING(10)...</p> <p>EDIT: I don't get any error message, but instead of getting the expected result set, I get an empty result set with a single column that has the same name as the function I am trying to call.</p>
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