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http://tracker.firebirdsql.org/browse/DNET-861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jiri Cincura reopened DNET-861:
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Upload here. No need to create another ticket.
> FbConnection.GetSchema getting column information does not bring the
> column_size on varchar columns
> ---------------------------------------------------------------------------------------------------
>
> Key: DNET-861
> URL: http://tracker.firebirdsql.org/browse/DNET-861
> Project: .NET Data provider
> Issue Type: Bug
> Components: ADO.NET Provider
> Affects Versions: 6.3.0.0, 6.4.0.0
> Environment: Visual Studio 2017
> ASP.NET Core
> NET Standard libraries
> Firebird 2.5
> Reporter: Fabricio Araujo
> Assignee: Jiri Cincura
> Attachments: FbConn_BugViews.zip
>
>
> I have my own way to generate SQL to use with Dapper (Dapper.Contrib does not
> fit well
> in what I'm doing) and I need to get column information to do so.
> When I'm working with database tables directly, all works wonders when I use
> this call:
> DataTable dtb = conn.GetSchema("COLUMNS", new string[] { null, null,
> ParamTableName });
> When I use a view, things gets weird. Views (is not a trivial view, it has a
> few joins) with varchar columns comes with COLUMN_TYPE correct but
> COLUMN_SIZE comes NULL.
> I traced the executed SQL of GetSchema but while it does not bring the type
> of the column (only the reference to the domain) it DOES BRING
> the COLUMN_SIZE correctly
> The other columns comes correctly (all those are INTEGER columns though).
> Create the following view on the provided employee.fdb:
> CREATE OR ALTER VIEW PHONE_LIST_EXAMPLE(
> EMP_NO,
> FIRST_NAME,
> LAST_NAME,
> PHONE_EXT,
> HIRE_DATE,
> DEPT_NO,
> JOB_CODE,
> JOB_GRADE,
> JOB_COUNTRY,
> SALARY,
> FULL_NAME,
> PHONE_NO)
> AS
> WITH CtePhoneList as (
> SELECT
> E.Emp_No,
> E.First_Name,
> E.Last_Name,
> E.Phone_Ext,
> E.Hire_Date,
> E.Dept_No,
> E.Job_Code,
> E.Job_Grade,
> E.Job_Country,
> E.Salary,
> E.Full_Name ,
> d.Phone_No
> FROM
> Employee E
> inner join Department d
> on e.Dept_No = d.Dept_No
> )
> Select
> Emp_No,
> First_Name,
> Last_Name,
> Phone_Ext,
> Hire_Date,
> Dept_No,
> Job_Code,
> Job_Grade,
> Job_Country,
> Salary,
> Full_Name ,
> Phone_No
> from
> CtePhoneList;
> And build the provided winforms application to get the column info from that
> view. If you try on the original phone list view, all column will come ok.
> If you run the application on THAT view you'll see that varchar columns will
> come without column size.
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