Deleting records from child to parent table

Question

I have ran into a situation where i will have to delete all the records of the child table and then the records of parent table and i was able to write a query to get the column,table both for parent,child and stuck up in deleting them using query and
i will not be able to use Cascade...My validation criteria is applicable for the child tables and parent table...am trying to compare last modified date of each table...Kindly help me with an approach
DECLARE @mytable VARCHAR(30) SET @mytable = 'tablea'
DECLARE @Order INT SET @Order = 0
DECLARE @Count INT
declare @tblname varchar(100),@query NVARCHAR(max),@parent varchar(100)
if OBJECT_ID('tempdb..#OrderList','U') is not null
DROP TABLE #OrderList
if OBJECT_ID('tempdb..#temp','U') is not null
DROP TABLE #temp
CREATE TABLE #TEMP
OrderNo INT,
TableName VARCHAR(50),
tid varchar(100),
childtable varchar(100),
cid varchar(100)
CREATE TABLE #OrderList
RecordNo INT,
OrderNo INT,
TableName VARCHAR(50),
tid varchar(100),
childtable varchar(100),
cid varchar(100)
create table #t
taname varchar(100)
;with tempcte (level,parent,pcol,child,ccol)
as
SELECT 0,SO2.name, SC2.name,SO1.name, SC1.name
FROM dbo.sysforeignkeys FK
INNER JOIN dbo.syscolumns SC1
ON FK.fkeyid = SC1.id AND FK.fkey = SC1.colid
INNER JOIN dbo.syscolumns SC2
ON FK.rkeyid = SC2.id AND FK.rkey = SC2.colid
INNER JOIN dbo.sysobjects SO1
ON FK.fkeyid = SO1.id
INNER JOIN dbo.sysobjects SO2
ON FK.rkeyid = SO2.id
INNER JOIN dbo.sysobjects FO
ON FK.constid = FO.id
WHERE SO2.Name = 'tablea'
union all
SELECT level+1,SO2.name, SC2.name,SO1.name, SC1.name
FROM dbo.sysforeignkeys FK
INNER JOIN dbo.syscolumns SC1
ON FK.fkeyid = SC1.id AND FK.fkey = SC1.colid
INNER JOIN dbo.syscolumns SC2
ON FK.rkeyid = SC2.id AND FK.rkey = SC2.colid
INNER JOIN dbo.sysobjects SO1
ON FK.fkeyid = SO1.id
INNER JOIN dbo.sysobjects SO2
ON FK.rkeyid = SO2.id
INNER JOIN dbo.sysobjects FO
ON FK.constid = FO.id
inner join tempcte t
on SO2.Name = t.child
insert into #TEMP
OrderNo,
TableName,
tid,
childtable,
cid
select
level,parent,pcol,child,ccol from tempcte
select * from #TEMP
INSERT INTO #OrderList
SELECT Row_number() OVER (ORDER BY OrderNo, TableName),
#TEMP.OrderNo,
#TEMP.TableName,
#TEMP.tid,
#temp.childtable,
#TEMP.cid
FROM #TEMP
SET @Count = (SELECT Max(RecordNo)
FROM #OrderList)
select * from #OrderList

Answer 1

Am looking for a logic to delete the records..Please provide some query to better understand..
Thats easy, refer the below link: You may check string and then execute if everything looks ok to you.
Ref:http://social.msdn.microsoft.com/Forums/en-US/bc36c6b6-1aca-43aa-bc95-7518fdb6fe4c/delete-data-from-multiple-tables?forum=transactsql
declare @Deletecommand varchar(max)
;with object_cte(tblid,tblname,rtblid,rtblname,level)
as
select distinct o.object_id as tblid,OBJECT_NAME(o.object_id) as tblname,cast(null as int),cast(null as sysname),
0 as level
from sys.objects o
inner join sys.foreign_keys f
on f.parent_object_id = o.object_id
where o.is_ms_shipped=0
and o.type='u' and OBJECT_NAME(o.object_id) like '/BIO/A%'
union all
select t.object_id as tblid,OBJECT_NAME(t.object_id) as tblname,o.tblid,o.tblname,o.level + 1
from object_cte o
inner join sys.foreign_keys f
on f.parent_object_id = o.tblid
join sys.objects t
on t.object_id = f.referenced_object_id
where t.is_ms_shipped=0
and t.type='u'
and OBJECT_NAME(o.object_id) like '/BIO/A%'
select @Deletecommand =(select 'DELETE FROM ' + tblname + ';' from
select row_Number() over (partition by tblname order by level) as rn,* from object_cte
)t
where rn=1
order by level
for xml path(''))
print @Deletecommand
--exec (@Deletecommand)