Make table that has every combination of OriginCountry and DestinationCountry

try like this.

--Create a temp table and insert this data into it.
INSERT INTO TempTable(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT a.ID, 
              c1.CountryName AS OriginCountry, 
              c2.CountryName AS DestinationCountry,
              a.AccountNumber
  FROM AccountNumbers a, Country c1, Country c2;

-- Truncate your AccountNumbers table and insert data from Temp table
TRUNCATE TABLE AccountNumbers;

INSERT INTO AccountNumbers(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT ID, OriginCountry, DestinationCountry,  AccountNumber FROM TempTable;

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If you do not want same country name as Origin and Destination, Add a WHERE clause like this.

--Create a temp table and insert this data into it.
INSERT INTO TempTable(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT a.ID, 
              c1.CountryName AS OriginCountry, 
              c2.CountryName AS DestinationCountry,
              a.AccountNumber
  FROM AccountNumbers a, Country c1, Country c2
 WHERE c1.Name <> c2.Name;

-- Truncate your AccountNumbers table and insert data from Temp table
TRUNCATE TABLE AccountNumbers;

INSERT INTO AccountNumbers(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT ID, OriginCountry, DestinationCountry,  AccountNumber FROM TempTable;

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Please try the codes as per below :

SELECT  ID, AccountNumber,[OriginCountry] ,[DestinationCountry]  FROM 
	 (select Row_Number() over ( ORDER BY c1.CountryName ) as RowIndex, 
	   ac.ID,
	   ac.AccountNumber,
	   c1.CountryName as OriginCountry
      ,c2.CountryName as DestinationCountry  
	FROM AccountNumbers as ac,Countries AS c1 LEFT OUTER JOIN Countries AS c2 ON c1.CountryName <> c2.CountryName 
	 
 ) as result

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Sharath

Msg 208, Level 16, State 1, Line 2
Invalid object name 'TempTable'.

Msg 207, Level 16, State 1, Line 20
Invalid column name 'OriginCountry'.
Msg 207, Level 16, State 1, Line 20
Invalid column name 'DestinationCountry'

--Create a temp table and insert this data into it.
CREATE TABLE TempTable
(
ID INT IDENTITY(1, 1) ,
OriginCountry NVARCHAR(100),
DestinationCountry NVARCHAR(100),
AccountNumber NVARCHAR(100)
);
INSERT INTO TempTable(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT a.ID,
              c1.CountryName AS OriginCountry,
              c2.CountryName AS DestinationCountry,
              a.AccountNumber
  FROM RatingDatabase.AccountNumbers a, Country c1, Country c2;

-- Truncate your AccountNumbers table and insert data from Temp table
TRUNCATE TABLE RatingDatabase.AccountNumbers;

INSERT INTO RatingDatabase.AccountNumbers(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT ID, OriginCountry, DestinationCountry,  AccountNumber FROM TempTable;

What is the table structure of RatingDatabase.AccountNumbers?
Do you already have the columns OriginCountry and DestinationCountry in it?

Created an new database CountryDB for testing.  2 tables in excel format attached. Not sure how to attach tables from db.

Now getting   (0 row(s) affected)

--Create a temp table and insert this data into it.
USE CountryDB
CREATE TABLE TempTable
(
ID INT ,
OriginCountry NVARCHAR(100),
DestinationCountry NVARCHAR(100),
AccountNumber NVARCHAR(100)
);


INSERT INTO TempTable(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT a.ID,
              c1.CountryName AS OriginCountry,
              c2.CountryName AS DestinationCountry,
              a.AccountNumber
  FROM AccountNumbers a, Country c1, Country c2;

-- Truncate your AccountNumbers table and insert data from Temp table
TRUNCATE TABLE AccountNumbers;

INSERT INTO AccountNumbers(ID, OriginCountry, DestinationCountry,  AccountNumber)
SELECT ID, OriginCountry, DestinationCountry,  AccountNumber FROM TempTable;
CountryDB.xls

Do you have data in AccountNumbers?

No.  That is the table I would like to populate.

From which table, your AccountNumber is coming from?

I will populate the AccountNumber field at a later time.  Will have a separate table "CarrierAccountNumbers"

I am attempting to populate the OriginCountry and DestinationCountry fields in table AccountNumber with every possible combination of OriginCountry and DestinationCountry.

For example:  The first 196 records would be Canada to every other DestinationCountry, next 196 United States to every other DestinationCountry,  Albania to every other DestinationCountry etc

Thank You Sharath that worked perfectly!

Thank You Sharath that worked perfectly!

Proposal is to accept ID: 41760123 and close this question.