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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)
as
begin
    set nocount on; 
    declare @fl1 varchar(max)='',@fl2 varchar(max)='',@q varchar(max)='';
    SELECT 
            @fl1+='cast('+name+' as sql_variant) as '+name+','
        ,   @fl2+=name+','
    FROM 
        sys.dm_exec_describe_first_result_set
        (
            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);
end
go


//antonch

Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios Chatzipavlis is a highly experienced Data Solutions Consultant and Trainer. He has been working in the IT industry since 1988, holding various roles such as senior developer, IT Manager, Data & AI Solutions Architect and Consultant.

Since 1995, Antonios has focused on modern technologies and software development tools, primarily by Microsoft. He has specialized in Data & AI since 2000, with expertise in Microsoft Data Platform (SQL Server, Azure SQL Databases, Azure Synapse Analytics, Microsoft Fabric, Power BI, AI) and Databricks.

Antonios is also a Microsoft Certified Trainer (MCT) for over 25 years, has been recognized as a Microsoft Most Valuable Professional (MVP) in Data Platform since 2010 and he is in the Data Expert 40 Powerlist 2024 by Boussias. He is the co-founder and visionary behind XLYTiCA, a company dedicated to Data & AI solutions.

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