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Show Record fields in key/value format

Antonios Chatzipavlis
Thursday 02 March 2017

Δεν είναι λίγες οι φορές που θέλεις να δεις τα δεδομένα μιας εγγραφής σε αντί σε μια γραμμή σε πολλές γραμμές (μία για κάθε field) και δύο στήλες (σε μια λογική key/value).

Κάτι τέτοιο αρκετές φορές θέλουμε να το δούμε σε metadata ενός object χωρίς να σημαίνει ότι δεν μπορεί να χρειαστεί και αλλού.

Ένας καλός φίλος λοιπόν ήθελε να δει όλα τα properties μιας database στην λογική key/value.

Για το λόγο αυτό έφτιαξα την παρακάτω stored procedure που εκμεταλλεύομαι τo DMV sys.dm_exec_describe_first_result_set για να πάρω τα column names του sys.databases και την unpivot

Enjoy it

create or alter proc sp_GetDatabaseProperties (@database_id int)
    set nocount on; 
    declare @fl1 varchar(max)='',@fl2 varchar(max)='',@q varchar(max)='';
            @fl1+='cast('+name+' as sql_variant) as '+name+','
        ,   @fl2+=name+','
            N'SELECT top (0) * FROM sys.databases;', NULL, 0
        ) AS f;
    set @q='select property_name , property_value from ( select '+ left(@fl1,len(@fl1)-1) + 
           ' from sys.databases where database_id='+cast(@database_id as varchar(20))+
           ') as d unpivot ( property_value for property_name in ('+left(@fl2,len(@fl2)-1)+')) as u;'
    exec (@q);


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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