2 Datatables to 1

Let's say i have Datatable1 that has "Colum1" , "colum2" and another table, Datatable2 with "Colum3" , "colum4"

I need to create Datatable3 that will contain all the col开发者_JAVA技巧umns "Colum1" , "colum2", "Colum3" , "colum4"

I need something smart, like the DefaultView.ToTable() method that does it for one table.

Thanks

As you didn't mention any language or DB server type, here's something that might work (not tested really) on SQL Server 2005:

CREATE TABLE #temp (col1 <type>, col2 <type>, col3 <type>, col4 <type>)
INSERT INTO #temp
(
    SELECT t1.Column1, t1.Column2, t2.Column3, t2.Column4
    FROM Datatable1 t1 INNER JOIN Datatable2 t2 ON t2.<PrimaryKeyField> = t1.<PrimaryKeyField>

    UNION

    SELECT t1.Column1, t1.Column2, t2.Column3, t2.Column4
    FROM Datatable2 t2 INNER JOIN Datatable1 t1 ON t1.<PrimaryKeyField> = t2.<PrimaryKeyField>
)

SELECT * FROM #temp