sp_droprole (Transact-SQL MetaData) Definition

Please note: that the following source code is provided and copyrighted by Microsoft and is for educational purpose only.
The meta data is from an SQL 2012 Server.

I have posted alot more, find the whole list here.

Goto Definition or MetaData

Definition:

sys.sp_droprole(nvarchar @rolename)

MetaData:

 create procedure sys.sp_droprole  
    @rolename       sysname     --  role to be dropped  
as  
    --  SETUP RUNTIME OPTIONS / DECLARE VARIABLES --   
    set nocount on  
    declare @ret        int,  
            @stmtR        nvarchar(4000)  
  
    --  DISALLOW USER TRANSACTION --   
    set implicit_transactions off  
    if (@@trancount > 0)  
    begin  
        raiserror(15002,-1,-1,'sys.sp_droprole')  
        return (1)  
    end  
  
    exec @ret = sys.sp_validname @rolename  
    if @ret <> 0  
        return(1)  
  
    --  create statement  
    set @stmtR = 'drop role '   + quotename(@rolename)  
      
    BEGIN TRANSACTION  
  
    --  this will drop the schema owned by the role that has the same name as the role,  
    --  if such schema exists  
    EXEC %%Owner(Name = @rolename).DropSchema(OwnerType = 2)  
    if @@error <> 0  
    begin  
        ROLLBACK TRANSACTION  
        --  error message comes from inside the invoke  
        return (1)  
    end  
  
    --  drop the role  
    exec (@stmtR)  
    if @@error <> 0  
    begin  
        ROLLBACK TRANSACTION  
        --  error message comes from inside the statement  
        return (1)  
    end  
  
    COMMIT TRANSACTION  
  
    --  RETURN SUCCESS --   
    return (0) --  sp_droprole