Group by Parent with Child Records

Question

Basically i have three Tables 
Request ID   Parent ID   Account Name   Addresss 
1452         1254789     Wendy's        Atlanta Georgia 
1453         1254789     Wendy's        Norcross Georgia
1456         1254789     Waffle House   Atlanta Georgia
Bid_ID       Bid_Type    Bid_Volume   Bid_V   Bid_D  Bid_E  Request_ID  Parent ID                 
45897        Incentive    10                 N/A     N/A       N/A     1452        1254789
45898        Incentive    10                 N/A     N/A       N/A     1453        1254789
45899        Incentive    10                 N/A     N/A       N/A     1456        1254789
Bid_Number     Bid_Name    Request_ID  Parent ID
Q789456       Wendy'Off     1452       1254789
Q789457       Wendy'Reba    1452       1254789
Q789456       Wendy'Off     1453       1254789
Q789457       Wendy'Reba    1453       1254789
Q789456       Wendy'Off     1456       1254789
I want the Result 
Parent ID   Bid_Type    Bid_Volume   Bid_V   Bid_D  Bid_E  AutoGeneratedCol
1254789     Incentive    10                  N/A     N/A      N/A      1
 1254789    Incentive    10                  N/A     N/A      N/A      2
Bid Number  AutoGeneratedCol_Link
Q789456       1
Q789457       1 
Q789456       2
Request ID  AutoGeneratedCol_Link
1452          1
1453          1
1456          2
In the above example Group parent with respect to child information .If all the Bid numbers are same (even number count) and Bid details same then group that request as one .
then same Bid number but other Bid number is not present then group into other 
Like similar example the number of bids may vary and bid numbers may vary 

Answer 1

I was expecting below results .
Group By Child tables i.e. AccountBids,AccountBidInformation
AccountBidInformation will be one to one relationship with AccountTable table 
AccountBids will be one to many relationship with AccountTable
During Group by AccountBidInformation will have one record and AccountBids are combined with budnumber is one column
Select distinct GSR,CustomizedClaims,TotalWeeklyVolume,ParentOrVendor,PP,CWT,(Select top 1 
substring(
Select ','+ST1.BidNumber  AS [text()]
From dbo.AccountBids ST1
Where ST1.AccountTable_ID = ST2.AccountTable_ID--Combine Bids to one row with respect to reference Key 
ORDER BY ST1.BidNumber
For XML PATH ('')
), 2, 1000) [Bids]
From dbo.AccountBids ST2 WHERE ST2.AccountTable_ID = AccountBids.AccountTable_ID) 
FROM AccountBids
INNER JOIN AccountBidInformation On AccountBids.AccountTable_ID = AccountBidInformation.AccountTable_ID 
ORDER BY GSR,CustomizedClaims,TotalWeeklyVolume,ParentOrVendor,PP,CWT
 After grouping AccountBids,AccountBidInformation .Select AccountTable records for each group by record 
SELECT Main.Account_Number,Effective_Date,Details FROM AccountTable Main
 INNER JOIN AccountBids ON AccountBids.AccountTable_ID = Main.AccountTable_ID
 INNER JOIN AccountBidInformation ON AccountBidInformation.AccountTable_ID = Main.AccountTable_ID
WHERE BidNumber in ('P120012','P120014')--First Record from previous select 
AND TotalWeeklyVolume = 452  --First Record from previous select 
AND ParentOrVendor = 'P' --First Record from previous select 
AND PP = 'N/A' --First Record from previous select 
AND CWT = 'N/A' --First Record from previous select 
Exists make sure Number of bids remain same 
Example : If you remove Exists then Second below query will return two duplicate record which is already selected in this .
AND EXISTS(
SELECT  AccountTable_ID          --           
FROM    AccountBids SUB            --          
WHERE   Main.AccountTable_ID = SUB.AccountTable_ID
GROUP   BY AccountTable_ID
HAVING  COUNT(*) = 2 --Pass number of bids selected from first result w.r.t commo seperated 
GROUP BY Main.Account_Number,Effective_Date,Details having count(BidNumber) = 2
SELECT Main.Account_Number,Effective_Date,Details FROM AccountTable Main
 INNER JOIN AccountBids ON AccountBids.AccountTable_ID = Main.AccountTable_ID
 INNER JOIN AccountBidInformation ON AccountBidInformation.AccountTable_ID = Main.AccountTable_ID
WHERE BidNumber in ('P120012')AND 
TotalWeeklyVolume = 452 
AND ParentOrVendor = 'P'
AND PP = 'N/A'
AND CWT = 'N/A' AND 
EXISTS(
SELECT  AccountTable_ID          --           
FROM    AccountBids SUB            --          
WHERE   Main.AccountTable_ID = SUB.AccountTable_ID
GROUP   BY AccountTable_ID
HAVING  COUNT(*) = 1 
GROUP BY Main.Account_Number,Effective_Date,Details having count(BidNumber) = 1
SELECT Main.Account_Number,Effective_Date,Details FROM AccountTable Main
 INNER JOIN AccountBids ON AccountBids.AccountTable_ID = Main.AccountTable_ID
 INNER JOIN AccountBidInformation ON AccountBidInformation.AccountTable_ID = Main.AccountTable_ID
WHERE BidNumber in ('P120012','P120014')
AND TotalWeeklyVolume = 453 
AND ParentOrVendor = 'N'
AND PP = 'N/A'
AND CWT = 'N/A'
AND EXISTS(
SELECT  AccountTable_ID          --           
FROM    AccountBids SUB            --          
WHERE   Main.AccountTable_ID = SUB.AccountTable_ID
GROUP   BY AccountTable_ID
HAVING  COUNT(*) = 2 
GROUP BY Main.Account_Number,Effective_Date,Details having count(BidNumber) = 2