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SP and function dependencies

By Peter Sloboda,

Finding dependencies in SPs is always pain. This SP scans the SP for calls to SPs, functions and other stuff (you can see it in the where clause "type in ('p','fn','if','x','ft','fs','pc')". It ignores commented out pieces of text. It uses a function fn_SplitBy included bellow, which splits the text (from syscomments) in char(10) delimited rows. The results are stored in a table "tree", which is created if it doesn't exist. To "pretty print" the dependency tree I'm using my previous published DBA_PrintTree stored proc. Actually, the published one is a bit different, so I'm including the modified one here.

The usage looks like:

exec dba_GetDependencies 'sp_name'

 

 

--- sql ----

create procedure [dbo].[DBA_PrintTree] (@root int)
as
set nocount on;

with btree (treeid,parenttreeid,nodename,level)
as
(
select treeid,parenttreeid,nodename,0 as level from tree
where treeid=@root
union all
select b1.treeid,b1.parenttreeid,b1.nodename,level+1 from tree b1 join btree b2 on b2.treeid=b1.parenttreeid
)

select treeid,parenttreeid,nodename,level into #t from btree order by level, parenttreeid

 

declare @stack table(d int identity(1,1) primary key,node int)
declare @t table(treeid int,parenttreeid int,nodename varchar(64),level int)
declare @parent int,@nodename varchar(64),@level int,
@bid int,@bparent int
set @parent=@root
insert @t select * from #t where treeid =@root
select @nodename=nodename from @t
print @nodename
delete #t where treeid =@root
insert @stack values(@root)

 

while exists(select top 1 node from @stack)
begin
while exists (select treeid from #t where parenttreeid=@parent)
begin
select top 1 @bid=treeid,@bparent=parenttreeid,@nodename=nodename,@level=level from #t
where parenttreeid=@parent order by nodename
insert @t values(@bid,@bparent,@nodename,@level)
print space(@level*5)+@nodename
delete #t where treeid=@bid
insert @stack values(@bid)
set @parent=@bid
end
delete @stack where d in (select max(d) from @stack)
select top 1 @parent=node from @stack order by d desc
end

select * from @t
drop table #t

-----------------------------------------------------------------------------------

 

create function [dbo].[fn_splitby](
@in nvarchar(max),
@by varchar(10)
)
returns @t table (id int identity(1,1),split nvarchar(max))
as begin
declare @i int, @bylen int, @insz int
set @bylen = len(@by)
set @insz = len(@in)
set @i = charindex(@by, @in)
while (@i > 0)
begin
insert into @t values (left(@in, @i - @bylen))
set @in = substring(@in, @i + @bylen, @insz)
set @i = charindex(@by, @in)
end
insert into @t values (@in)
return
end
-------------

 

Total article views: 1803 | Views in the last 30 days: 4
 
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