using Inner join when the field in my data table has the Null default value:

I have a datatable : Data_Table and a look up table: Lk_table. Myfield that Iuse in Inner Join is defined in both thedata and look table.

So I build my query like this:

SELECT * FROM dbo. Data_Table INNER JOIN

dbo. Lk_table ON dbo.Data_Table.MyField = dbo.Lk_table.Myfield

The pb, sometimes Ihave myfield still with its default null value in the datatable: Data_Table.So, I end up getting 0 record when I execute the query shown above.

How do I turn that around so that even if myfield in Data_Tableis Null, I still get the records from Data_Table. (I don t want a set ofrecords including all possible values from the look up table: Lk_Table)

Try to use LEFT join instead of inner join:

SELECT * FROM dbo. Data_Table LEFT JOIN dbo. Lk_table
ON dbo.Data_Table.MyField = dbo.Lk_table.Myfield

|||

Try to use LEFT join instead of inner join:

SELECT * FROM dbo. Data_Table LEFT JOIN dbo. Lk_table
ON dbo.Data_Table.MyField = dbo.Lk_table.Myfield

Or use such query:

SELECT * FROM dbo. Data_Table ,dbo. Lk_table
WHERE dbo.Data_Table.MyField = dbo.Lk_table.Myfield

OR dbo.Data_Table.MyField is null