Export tables with foreign keys

-script all tables for migration without FK
-script all FK
Disable, enable, drop and recreate SQL Server Foreign Keys
http://www.mssqltips.com/sqlservertip/1376/disable-enable-drop-and-recreate-sql-server-foreign-keys/

-create the tables in the destination DB
- copy data into the tables
-- add FK from step#2

The query below will list FK "depths", where a depth of 0 = no fk; 1 = 1st level fk; 2 = 2nd level fk; etc..

Load from the lowest to the highest: that is, all level 0 first, then level 1, then level 2, etc..



;WITH FKs AS (
    SELECT DISTINCT
        OnTable.name AS OnTable,
        AgainstTable.name AS AgainstTable
    FROM sys.foreign_keys fk
    INNER JOIN sys.objects onTable ON
        fk.parent_object_id = onTable.object_id
    INNER JOIN sys.objects againstTable ON
        fk.referenced_object_id = againstTable.object_id
    WHERE
        AgainstTable.TYPE = 'U' AND
        OnTable.TYPE = 'U' AND
        OnTable.Name <> AgainstTable.Name
),
UserTables AS (
    SELECT
        o.name AS OnTable,
        FKs.againstTable AS AgainstTable
    FROM sys.objects o
    LEFT OUTER JOIN FKs ON
        o.name = FKs.onTable
    WHERE
        o.type = 'U' AND
        o.name not like 'sys%' AND
        o.name not like 'ms%'
),
FKRecursion as (
    -- base case
    SELECT
         ut.OnTable AS TableName,
         0 AS Depth
    FROM UserTables ut
    WHERE
        AgainstTable IS NULL
    -- recursive case
    UNION ALL
    SELECT
        ut.OnTable AS TableName,
        r.Depth + 1 AS Depth
    FROM UserTables ut
    INNER JOIN FKRecursion r ON
        ut.AgainstTable = r.TableName
)
SELECT
    MAX(depth) AS FK_Depth,
    TableName
FROM
    FKRecursion
GROUP BY
    TableName
ORDER BY
    FK_Depth,
    TableName