Hello, this should be easy but every thing I tried isn't working or only partly working.
Basically I got two tables, 1 main table with all my information and 1 with just values which are allowed in a column in the main table.
In a query I want to remove records where in the particular column the value is invalid eg. not in the reference table.
But an important point is that I want to accept blank values in the column too.
Any help is welcome, thanks.
Kind regards,
Peter
Basically I got two tables, 1 main table with all my information and 1 with just values which are allowed in a column in the main table.
In a query I want to remove records where in the particular column the value is invalid eg. not in the reference table.
But an important point is that I want to accept blank values in the column too.
Any help is welcome, thanks.
Kind regards,
Peter