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Get query results in HTML Table

Antonios Chatzipavlis

Από προσωπική ανάγκη και γιατί δεν είχα χρόνο για να ψάξω να βρω κάτι στο internet έγγραψα την παρακάτω stored procedure που παίρνει ένα SELECT statement και επιστρέφει τα δεδομένα σε html table format.

Η χρήση της είναι εύκολη καθώς παίρνει τρεις παραμέτρους:

  • @sqlquery nvarchar(max) : Είναι το select που θέλουμε να εκτελεστεί.
  • @tablecaption nvarchar(1000) : Είναι το Caption text για το table caption html element με default value 'Query Results'.
  • @debug bit : είναι για την περίπτωση που κάποιος θέλει να κάνει debug την stored procedure και η default value είναι FALSE(0).

Θα πρέπει να επισημανθεί ότι υπάρχουν περιπτώσεις που δεν υποστηρίζονται σε αυτή την stored procedure όπως binary fields , special chars τα οποία δεν υποστηρίζονται στο XML για αυτό το λόγο θα πρέπει το query που θα δοθεί θα πρέπει να έχει φροντίσει να κάνει τα απαραίτητα conversion.

create or alter  proc [dbo].[getQueryResultHTMLTable] (@sqlquery nvarchar(max),@tablecaption nvarchar(1000)='Query Results',@debug bit = 0)
with recompile
as
begin
    
    declare @tsql nvarchar (max);
    declare @columnslist nvarchar (max) = '';
    declare @columnslist_header nvarchar (max) = '';

    set nocount on;
 
    begin try

    -- create temp table

         IF OBJECT_ID('tempdb..#T', 'U') IS NOT NULL
        begin
           DROP TABLE #T;
        end
        else
        begin
            create table #t ( temp_col int );
        end;
        
        if ( @debug = 1 )
        begin
            select * from #t;
        end;

        -- find  columns and data type for alter table

        select @columnslist += quotename(name) + ' ' + system_type_name  + ' , '
        from sys.dm_exec_describe_first_result_set(@sqlquery, null, 0)    
        where is_hidden = 0;
        
        set @columnslist = left (@columnslist, len (@columnslist) - 1);
        
        if ( @debug = 1 ) 
        begin
            select @columnslist;
        end;
        
        -- create temp table 

        set @tsql = 'alter table #t add ' + @columnslist;
        
        if @debug=1
        begin
            print @tsql;
        end;

        exec (@tsql);
        
        alter table #t drop column temp_col;
        
        if @debug=1
        begin
            select 'alter' as 'alter', * from #t;
        end;
        
        -- insert data to temp table
    
        insert into #t
        exec (@sqlquery);

        if ( @debug = 1 ) 
        begin
            select * 
            from sys.dm_exec_describe_first_result_set('select * from #t', null, 0);
        end;
        
        -- find columns for select 

        set @columnslist='';
        
        select @columnslist += quotename(name) +' as td , ' 
        from sys.dm_exec_describe_first_result_set('select * from #t', null, 0)
        where is_hidden = 0;
        
        set @columnslist = left (@columnslist, len (@columnslist) - 1);
        
        if ( @debug = 1 ) 
        begin
            select @columnslist;
        end;
        
        -- find columns for table header

        set @columnslist_header='';
        
        select @columnslist_header += ''''+name + ''' as th,'
        from sys.dm_exec_describe_first_result_set('select * from #t', null, 0)
        where is_hidden = 0;
        
        set @columnslist_header = left (@columnslist_header, len (@columnslist_header) - 1);
        
        if ( @debug = 1 ) 
        begin
            select @columnslist_header;
        end;
        
        -- produce html table

        set @tsql = 'SELECT 
                    (SELECT '''+@tablecaption +''' FOR XML PATH(''''),TYPE) AS ''caption''
                    ,(SELECT ' +  @columnslist_header + ' FOR XML raw(''tr''),ELEMENTS, TYPE) AS ''thead''
                    ,(SELECT ' + @columnslist + ' from #t FOR XML RAW(''tr''), ELEMENTS,  TYPE ) AS ''tbody''
                    FOR XML PATH(''''), ROOT(''table'')';
        
        if ( @debug = 1 ) 
        begin
            print @tsql;
        end;

        exec (@tsql);

        -- drop temp table
    
        if object_id('tempdb..#t', 'u') is not null
        begin
            drop table #t;
        end;

   end try
   begin catch
        if object_id('tempdb..#t', 'u') is not null
        begin
            drop table #t;
        end;
        throw;
   end catch
   
end
go

//antonch


Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios is a Data Solutions Consultant and Trainer. He has been working in IT since 1988. In his career, he has worked as senior developer, IT Manager, Solutions Architect and IT Consultant. Since 1995 he has been devoted on new technologies and software development tools, mainly by Microsoft, either by training company staff and colleagues or assisting them in design, development and implementation as a consultant or chief developer. He has focused in Databases and Data Science since 1995. He specialized in Microsoft SQL Server since version 6.0 in areas like SQL Server Internals, Database Design and Development, Business Intelligence and in 2010 he has started working with Azure Data Platform, NoSQL databases, Big Data Technologies and Machine Learning. He is an active member of many IT communities in Greece, answering colleagues' questions and writing articles in his web site. He is the owner of SQLschool.gr which is a community portal with a lot of information about Microsoft SQL Server. He has been a Microsoft Certified Trainer (MCT) since 2000. Microsoft honored him as MVP on Data Platform due to his activities in SQL Server since 2010. He holds a large number of Microsoft Certifications and Microsoft SQL Server Certifications since version 6.5.


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